BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CASSA - ECPv6.16.2//NONSGML v1.0//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:CASSA X-ORIGINAL-URL:https://cassa.site X-WR-CALDESC:Events for CASSA REFRESH-INTERVAL;VALUE=DURATION:PT1H X-Robots-Tag:noindex X-PUBLISHED-TTL:PT1H BEGIN:VTIMEZONE TZID:UTC BEGIN:STANDARD TZOFFSETFROM:+0000 TZOFFSETTO:+0000 TZNAME:UTC DTSTART:20220101T000000 END:STANDARD END:VTIMEZONE BEGIN:VTIMEZONE TZID:UTC BEGIN:STANDARD TZOFFSETFROM:+0000 TZOFFSETTO:+0000 TZNAME:UTC DTSTART:20220101T000000 END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTART;TZID=UTC:20250624T120000 DTEND;TZID=UTC:20250624T133000 DTSTAMP:20260514T225737 CREATED:20250619T090435Z LAST-MODIFIED:20250619T092440Z UID:5531-1750766400-1750771800@cassa.site SUMMARY:Journal Talk 2: van Zyl & Grobler 2024 DESCRIPTION:Remove First Detect Later: a counter-intuitive approach for detecting radio frequency interference in radio sky imagery \nLink: https://doi.org/10.1093/mnras/stae979 \nPresenter: Adrita Khan \nBoth in person and online. \nTo get notifications and the Google Meet link subscribe using the Google Form: \nhttps://forms.gle/fikhmc7Y2whjJWKK9 URL:https://cassa.site/event/jtalk-2/ LOCATION:CASSA\, IUB Main Building Rooftop\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA (Main Building Rooftop)\, Dhaka\, 1229\, Bangladesh CATEGORIES:Journal Talk ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2025/06/journal-talk.webp ORGANIZER;CN="CASSA%2C Independent University%2C Bangladesh":MAILTO:cassa@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250623T203000 DTEND;TZID=UTC:20250623T223000 DTSTAMP:20260514T225737 CREATED:20250615T074740Z LAST-MODIFIED:20250623T124815Z UID:5428-1750710600-1750717800@cassa.site SUMMARY:Rubin First Look Watch Party DESCRIPTION:🌌 You’re Invited: Rubin First Look Watch Party at CASSA! 🌌 \nJoin us at CASSA\, IUB\, for a truly historic moment in astronomy! 🚀 \n📅 Date: Monday\, 23 June 2025\n🕚 Time: 8:00 PM BST (Live stream starts at 8:30 PM)\n📍 Venue: CASSA\, Independent University\, Bangladesh \nWe are thrilled to host a local Watch Party for the Rubin First Look — the global unveiling of the very first images from the Vera C. Rubin Observatory! 🌠 This marks the dawn of a new era in astronomy\, and you can witness it live with the global science community. \n🔭 What’s happening: \n\n\n\n\n\n\n08:00\nGuests arrive at CASSA office and Dr. Asad introduces the program\n\n\n08:15\n“Bringing the Night Sky to Life” — an interactive (with Q&A) introduction (with slides) to the Rubin observatory\n\n\n08:45\nA demonstration of the small telescopes of Durbin at CASSA office\n\n\n09:00\nRubin First Look Unveiling Event livestream begins\n\n\n10:30\nQ&A about the livestream and about the future of Rubin\n\n\n\nAll are welcome — students\, astronomy enthusiasts\, faculty\, and the curious alike! \n📡 Live stream in English (Spanish version also available) \nDon’t miss your chance to be part of this celestial milestone!\nFollow this page for updates. 🌌 URL:https://cassa.site/event/rubin-first-look-watch-party/ LOCATION:CASSA\, IUB Main Building Rooftop\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA (Main Building Rooftop)\, Dhaka\, 1229\, Bangladesh CATEGORIES:Outreach ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2025/06/rubin.jpg ORGANIZER;CN="CASSA%2C Independent University%2C Bangladesh":MAILTO:cassa@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250617T120000 DTEND;TZID=UTC:20250617T133000 DTSTAMP:20260514T225737 CREATED:20250617T093500Z LAST-MODIFIED:20250617T114522Z UID:5468-1750161600-1750167000@cassa.site SUMMARY:Journal Talk 1: Garon et al. 2019 DESCRIPTION:Radio Galaxy Zoo: The Distortion of Radio Galaxies by Galaxy Clusters \nhttps://doi.org/10.3847/1538-3881/aaff62 \nPresenter: Mir Sazzat Hossain URL:https://cassa.site/event/jtalk-1/ LOCATION:CASSA\, IUB Main Building Rooftop\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA (Main Building Rooftop)\, Dhaka\, 1229\, Bangladesh CATEGORIES:Journal Talk ORGANIZER;CN="CASSA%2C Independent University%2C Bangladesh":MAILTO:cassa@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250502T090000 DTEND;TZID=UTC:20250503T170000 DTSTAMP:20260514T225737 CREATED:20250322T071351Z LAST-MODIFIED:20250514T155006Z UID:4929-1746176400-1746291600@cassa.site SUMMARY:CASSA Workshop 1: Unclouding the Thousand Eyes of an Array Radio Telescope DESCRIPTION:The most advanced telescopes at radio wavelengths are now Array Radio Telescopes (ART)\, arrays of hundreds and thousands of radio antennas guarding the universe like Argus in Ovid’s Metamorphoses. ARTs are everywhere\, from the Y-shaped Very Large Array (VLA) in the deserts of New Mexico to the rectilinear Medicina displayed dramatically in the Red Desert (1964) of Michelangelo Antonioni (pictured in the poster). \nIn this 2-day workshop for undergraduate\, postbac and graduate students of Bangladesh\, we will learn the basics of radio astronomy and synthesis arrays on the first day\, and then apply that knowledge to make a sparse representation of the radio vision of an ART in python. It is a BYOL workshop\, so you have to ‘bring your own laptop’ with python and jupyter-lab set up in a UNIX-based operating system (Ubuntu is an excellent choice). Eligibility criteria\, registration link\, and the program are given below. \n\n  \nEligibility\n\nYou have to be an undergraduate\, postbac (finished BSc but did not start any other academic program yet)\, or graduate student currently living in Bangladesh.\nYou have to be able to join the workshop in person at IUB from 9 am – 5 pm on 18 and 19 April\, 2025. Online option is not available for this specific workshop\, but in future CASSA will have both in person\, online and hybrid workshops.\nThe subject of your undergraduate or graduate studies have to be a math-intensive engineering\, mathematical or natural science\, or computer science.\nYou should have some basic knowledge of python;. Being an expert in python is not necessary\, because the students will be divided in groups for groupworks (GW) and we will ensure that each group has a variety of students with different levels of expertise in python.\nYou must bring (and work on) your own laptop (BYOL) and the laptop should have a UNIX-like terminal and jupyter-lab with which you can log into a high-performance computing server. If you are not sure about the setup in the terminal and jupyter-lab\, we will help you during the workshop.\nNo prior knowledge of astronomy is required\, but previous experience in learning or researching astronomy will be considered for the final selection of participants.\nWe encourage you to browse through the online textbook Essential Radio Astronomy before appearing for the workshop\, but you will not be tested on it.\n\nRegistration\n\n\nIf you are eligible (based on the previous section)\, please click here for the Google Form for registration (or the button above).\nRegistration deadline: 18 April\, 2025.\nWe specially encourage women to apply without any hesitation. At least 40% of seats will be reserved for women applicants.\n\nProgram Schedule\nThe following is the tentative schedule\, which may be subject to minor changes until 30 April. [GW: groupwork] \n\n\n\n\n\n\n\n\n\nDay\nFrom\nTo\nSegment\nInstructor\n\n\n\n2\nMay\n2025\nFri\n\n9:00\n10:00\nIcebreaker\n\n\n\n10:00\n11:00\nIntroduction to radio astronomy\nKMB Asad\n\n\n11:00\n11:30\nCoffee break\n\n\n\n11:30\n12:30\nArray Radio Telescopes (ART)\nAsad\n\n\n12:30\n02:00\nLunch break 1\n\n\n\n02:00\n03:00\nPrimary beams of ART antennas\nAsad\n\n\n03:00\n03:30\nGroup creation\n\n\n\n03:30\n05:00\nGW: Setting up the group projects\nCASSA TAs\n\n\n07:00\n09:00\nOptional stargazing at night\nDurbin\n\n\n\n3\nMay\n2025\nSat\n\n9:00\n10:00\nSparse representation of beams\nAsad\n\n\n10:00\n11:00\nGW: decomposing LOFAR beams\nAsad\n\n\n11:00\n11:30\nCoffee break\n\n\n\n11:30\n12:30\nGW: reconstructing LOFAR beams\nCASSA TAs\n\n\n12:30\n02:00\nLunch break\n\n\n\n02:00\n03:00\nGW: finalizing LOFAR beams\nCASSA TAs\n\n\n03:00\n03:30\nSubmission of the GWs\n\n\n\n03:30\n05:00\nGW presentations\nAsad\n\n\n\nTeaching Assistants\n\nAfnan Uzzaman\, BSc student\, electrical and electronic engineering\, IUB.\nMd. Shahadat Hossain Shahal\, BSc student\, computer science and engineering\, IUB.\nMozammal Hossain Masum\, BSc student\, computer science and engineering\, IUB.\n\nList of Participants\n\n\n\n\n\n\n\nName\nUniversity\nGroup\n\n\n\n\nAbantika Maytra Oishee\nHajee Mohammad Danesh Science and Technology University\n1\n\n\nAbyaz Karim\nIndependent University\, Bangladesh\n1\n\n\nMD. MERAJUL HASAN\nUniversity of Dhaka\n1\n\n\nMost. Atia Sanjida\nUniversity of Dhaka\n1\n\n\nSarker Mahathir Mohammad\nUniversity of Dhaka\n1\n\n\nMd. Soyed Ahmed\nAhsanullah University of Science and Technology\n2\n\n\nBrishti Dhar\nIndependent University\, Bangladesh\n2\n\n\nShams Habib Muzaffar\nIndependent University\, Bangladesh\n2\n\n\nAhmad Al-Imtiaz\nShahjalal University of Science and Technology\n2\n\n\nTabib Zahin\nUniversity of Dhaka\n2\n\n\nHaniah Mokhtar\nBRAC University\n3\n\n\nTasfia Hasan Faiza\nIndependent University\, Bangladesh\n3\n\n\nNublat Hafsa\nIndependent University\, Bangladesh\n3\n\n\nFahima Khal Shayeq\nAsian University for Women\n4\n\n\nAiman Rafeed Bin Ehtesham\nMilitary Institute of Science and Technology\n4\n\n\nMuhammad Arif Hussain\nUniversity of Dhaka\n4\n\n\nTasnim Mahfuz Nafis\nUniversity of Dhaka\n4\n\n\nUrboshi Barua\nAsian University for Women\n5\n\n\nTazrian Noor\nIndependent University\, Bangladesh\n5\n\n\nDeba Priyo Guha\nRajshahi University of Engineering and Technology\n5\n\n\nM.O.B. JIHAD\nAmerican International University-Bangladesh\n6\n\n\nHameeda Ahmadi\nAsian University for Women\n6\n\n\nRownok Shahariar\nGovt. Edward College\, Pabna\n6\n\n\nMd. Abu Azad Tamim\nUniversity of Chittagong\n6\n\n\nMasuk Ridwan Saumo\nBangladesh University of Engineering and Technology\n7\n\n\nMD. SHAYED HASAN SAHKIB\nDaffodil International University\n7\n\n\nMiss Nourin Nurain Amina\nKhulna University\n7\n\n\nHridita Nowrin Pranti\nUniversity of Chittagong\n7\n\n\nSajid Ahmed Chowdhury\nIndependent University\, Bangladesh\n8\n\n\nZakia Nazzum\nIndependent University\, Bangladesh\n8 URL:https://cassa.site/event/workshop-1/ LOCATION:CASSA\, IUB Main Building Rooftop\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA (Main Building Rooftop)\, Dhaka\, 1229\, Bangladesh CATEGORIES:Workshop ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/02/LOFAR_Superterp.webp ORGANIZER;CN="CASSA%2C Independent University%2C Bangladesh":MAILTO:cassa@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20250428 DTEND;VALUE=DATE:20250503 DTSTAMP:20260514T225737 CREATED:20241029T152642Z LAST-MODIFIED:20241119T200140Z UID:3469-1745798400-1746230399@cassa.site SUMMARY:LOFAR-EoR Plenary Meeting DESCRIPTION: URL:https://cassa.site/event/lofar-eor-plenary-meeting/ CATEGORIES:Meeting ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/05/radtel-1.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250316T214500 DTEND;TZID=UTC:20250316T224500 DTSTAMP:20260514T225737 CREATED:20250308T053043Z LAST-MODIFIED:20250308T053558Z UID:4872-1742161500-1742165100@cassa.site SUMMARY:CASSA Plenary Meeting 1 DESCRIPTION:A meeting among the core and associate members for understanding the past and planning the future of CASSA. URL:https://cassa.site/event/plenary-meeting-1/ LOCATION:Google Meet CATEGORIES:Meeting ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2025/02/cassa.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250213T143000 DTEND;TZID=UTC:20250213T153000 DTSTAMP:20260514T225737 CREATED:20250208T173307Z LAST-MODIFIED:20250213T072823Z UID:4755-1739457000-1739460600@cassa.site SUMMARY:CASSA Tea Talk 1: Revisiting the age scale of Galactic globular clusters DESCRIPTION:Speaker: S M Masruk Uddin\, M2 Sudent (International Research Track)\, Observatoire de Paris; Research Intern\, Laboratory for Astrophysics Research and Instrumentation (LIRA); Paris Sciences et Lettres University (PSL)\, France. \nAbstract: Globular clusters (GCs) are critical for understanding the formation and evolution of the Milky Way. Their ages provide constraints on Galactic formation models. This study revisits the age scale of Galactic GCs using photometric data from the Hubble Space Telescope and spectroscopic data from the APOGEE survey. The SPInS (Stellar Parameters Inferred Systematically) framework was employed to infer ages through Bayesian analysis with Markov Chain Monte Carlo (MCMC). Initial tests on NGC 5053 refined the methodology but highlighted computational inefficiencies in SPInS\, particularly for large datasets. Despite these challenges\, the analysis produced robust age estimates consistent with the established age of the Milky Way. Anticipated optimizations to SPInS will allow scaling the methodology to all selected clusters\, enabling precise age determinations and enhancing our understanding of Galactic formation history. \nS M Masruk Uddin graduated from IUB with a major in physics and minor in computer science. URL:https://cassa.site/event/tea-talk-1/ LOCATION:IUB Room BC2022\, Digital Classroom\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Tea Talk ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2025/02/masruk.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250206T130000 DTEND;TZID=UTC:20250206T143000 DTSTAMP:20260514T225737 CREATED:20250206T114409Z LAST-MODIFIED:20251126T061345Z UID:4549-1738846800-1738852200@cassa.site SUMMARY:CASSA Colloquium 6: Unraveling the distant Universe with wide-field surveys of star-forming galaxies DESCRIPTION:Speaker: Tanveer Karim\, PhD\, Postdoctoral Fellow at the David A. Dunlap Department of Astronomy & Astrophysics\, University of Toronto\, and a member of the Dark Energy Spectroscopic Instrument (DESI) collaboration and the Dark Energy Science Collaboration (DESC). \nAbstract: Over the past decade\, cosmology has encountered significant tensions between different measurements of key cosmological parameters\, particularly when comparing the cosmic microwave background (CMB) with data from large-scale structures. Historically\, large-scale structure observations have primarily focused on the Universe below redshift 1 using galaxies that are 100-1000 times more massive than our Milky Way. However\, ongoing and upcoming surveys\, such as the Dark Energy Spectroscopic Instrument (DESI) and the Rubin Observatory\, are expanding these measurements beyond redshift 1\, opening new avenues for exploration. In this talk\, I will discuss the exciting opportunities and the challenges of probing the Universe at 𝑧 â‰Ĩ 1 using wide-field surveys of star-forming and less massive galaxies. I will present recent results from the cross-correlation of DESI Legacy Imaging Surveys’ Emission-Line Galaxies with Planck CMB lensing and contextualize reasons for various apparent tensions. \nGoogle Meet: https://meet.google.com/izz-qwux-pod URL:https://cassa.site/event/colloquium-6/ LOCATION:Room MK5004\, DMK Building\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara Ra\, Dhaka\, 1229\, Bangladesh CATEGORIES:Colloquium ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2025/01/karim-e1740627757393.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250130T140000 DTEND;TZID=UTC:20250130T150000 DTSTAMP:20260514T225737 CREATED:20250130T092631Z LAST-MODIFIED:20251126T061255Z UID:3999-1738245600-1738249200@cassa.site SUMMARY:CASSA Colloquium 5: Lower Dark Matter in the Local Group Galaxies and the Origin of the MW Dwarfs DESCRIPTION:Speaker:\nIstiak Akib\, PhD candidate\, Laboratoire d’Instrumentation et de Recherche en Astrophysique (LIRA)\, Observatoire de Paris\, Paris Sciences et Lettres University (PSL). \n\nAbstract:\nFitting the flat rotation curves of the Galaxies indicate vast majority of the matter content in the galaxies is dark matter\, even higher than the cosmological estimate of 85% and giving rise to the missing baryon problem. However\, these rotation curve fits assume equilibrium conditions at the disk outskirts. This is not necessarily always fulfilled since on average galaxies have gone through a major merger 6 Gyr ago. For the MW\, the last major merger was 9-10 Gyr ago and the disk outskirts had enough time to reasonably fulfill the equilibrium conditions. Gaia DR3 rotation curve for the MW differs significantly from a flat fit and is consistent with a Keplerian decline. This gives a mass of $2.06\times 10^{11}$ M$_\odot$\, resulting in a dark matter fraction of 70%. Another estimate for the galaxy mass comes from comparing the time frame of the bulge formation and the accretion of the satellites with their binding energies. For the MW\, this is in agreement with the mass from the rotation curve. Andromeda Galaxy (M31) had a recent 2-3 Gyr major merger and hence the disk outskirts are likely not in equilibrium. Hydrodynamical modeling of this merger resulting in an M31 of mass $4.5\times 10^{11}$ M$_\odot$ and 68% dark matter reproduces the observational features of the M31 and especially its rotation curve. These M31 merger models indicate tidal tails coming towards the MW with significant stellar and gas particles. Part of these tails is found in agreement in the 6D space with most of the VPOS (Vast POlar Structure) satellites including the LMC for the case of such low mass MW models. This may explain the origin of the MW’s plane of satellites and is a first indication of matter exchange between these two galaxies. \nRelevant papers:\n\nJiao et al 2023: Detection of the Keplerian decline in the Milky Way rotation curve.\nHammer et al 2024a: The Milky Way accretion history compared to cosmological simulations.\nHammer et al 2024b: Dark matter fraction derived from the M31 rotation curve.\nAkib et al 2025: An intriguing coincidence between the majority of the VPOS dwarfs and a recent major merger at the M31 position (in revision at A&A).\nJiao et al 2025: Dark matter mass range in the Milky Way derived from the rotation curve (in preparation). URL:https://cassa.site/event/colloquium-5/ CATEGORIES:Colloquium ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/12/akib-1.webp ORGANIZER;CN="CASSA%2C Independent University%2C Bangladesh":MAILTO:cassa@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250109T130000 DTEND;TZID=UTC:20250109T140000 DTSTAMP:20260514T225737 CREATED:20250109T092216Z LAST-MODIFIED:20250111T143857Z UID:3768-1736427600-1736431200@cassa.site SUMMARY:CASSA Colloquium 4: Astronomy in Space: Pioneering Missions for Lunar and Orbital Observatories DESCRIPTION:Speaker: Shah Mohammad Bahauddin\, PhD\, Research Faculty\, Laboratory for Atmospheric and Space Physics (LASP)\, Astrophysical & Planetary Sciences Department\, University of Colorado\, Boulder\, USA. \nAbstract: The next frontier of astronomy lies in leveraging the unique environments of space and the Moon to unlock unprecedented scientific discoveries. This presentation will explore the speaker’s journey of transforming scientific questions into mission concepts\, focusing on the development of space and lunar observatories. Drawing on experience with NASA mission concepts\, the talk will emphasize the intersection of scientific motivation\, instrument design\, and mission planning. It will also highlight the transformative potential of innovative technologies\, such as advanced optical designs\, onboard artificial intelligence\, and cutting-edge signal processing techniques\, in enabling new avenues for space astronomy. By harnessing the unique advantages of space-based and lunar observatories\, these missions aim to address fundamental questions about the origins\, dynamics\, and evolution of the universe. \nRelevant article: This May Be the First Complete Observation of a Nanoflare\, NASA. URL:https://cassa.site/event/colloquium-4/ LOCATION:Lecture Gallery MK9006\, DMK Building\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Colloquium ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/11/bahauddin-e1732621966981.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20250105T130000 DTEND;TZID=UTC:20250105T140000 DTSTAMP:20260514T225737 CREATED:20250105T155404Z LAST-MODIFIED:20250111T143847Z UID:3813-1736082000-1736085600@cassa.site SUMMARY:CASSA Colloquium 3: Measuring the Expansion Rate of the Universe from Carnegie Supernova Project DESCRIPTION:Speaker: Syed A Uddin\, PhD\, Department of Physics and Astronomy\, University of South Carolina\, USA. \nThe Known Unknowns of Observational Cosmology: Measuring the Expansion Rate of the Universe from Carnegie Supernova Project \nAbstract: In the era of precision cosmology\, where percent-level accuracy in measurements is now within reach\, we are still confronted with profound enigmas: dark matter\, dark energy\, and the Universe’s dark ages. Compounding these challenges is the ongoing discrepancy in Hubble constant values\, known as the Hubble tension\, between measurements from the Cosmic Microwave Background and those based on the Type Ia Supernova distance scale. In this talk\, I will explore key milestones in observational cosmology\, delve into the intricacies of Hubble constant measurements\, and share our latest findings from the Carnegie Supernova Project. \nRelevant paper: Carnegie Supernova Project I and II: Measurements of H0 Using Cepheid\, Tip of the Red Giant Branch\, and Surface Brightness Fluctuation Distance Calibration to Type Ia Supernovae. URL:https://cassa.site/event/colloquium-3/ LOCATION:Lecture Gallery MK9006\, DMK Building\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Colloquium ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2024/11/uddin.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241219T130000 DTEND;TZID=UTC:20241219T140000 DTSTAMP:20260514T225737 CREATED:20241219T053125Z LAST-MODIFIED:20250111T143834Z UID:3600-1734613200-1734616800@cassa.site SUMMARY:CASSA Colloquium 2: Exploring the Co-Evolution of Star Clusters and Galaxies Since Cosmic Dawn with JWST DESCRIPTION:Speaker:\nLamiya Ashraf Mowla\, PhD\, Assistant Professor\, Department of Physics and Astronomy\, Wellesley College\, USA. \nAbstract:\nThe most distant galaxies observed date back to when the Universe was only 5% of its current age\, with progenitors of galaxies like the Milky Way being about 10\,000 times less massive. Using JWST and the magnification provided by gravitational lensing\, these low-mass galaxies can be detected and studied in detail. In this work\, we present JWST observations of the “Firefly Sparkle\,” a strongly lensed galaxy at (z = 8.3) in the CANadian Unbiased Cluster Survey (CANUCS). This galaxy features massive star clusters cocooned in a diffuse arc\, showcasing characteristics of a young\, gas-rich galaxy in the early stages of formation. The unresolved clusters display exceptionally high surface densities\, surpassing those of Milky Way globular clusters and nearby young star clusters\, along with nebular-dominated spectra\, low metallicity\, high gas density\, and elevated electron temperatures\, suggesting a top-heavy initial mass function (IMF). These observations provide the first spectrophotometric view of a typical galaxy at Cosmic Dawn\, highlighting JWST’s capability to investigate the co-evolution of galaxies and star clusters. I will also discuss plans to expand this work using future JWST cluster observations\, aiming to deepen our understanding of the evolution of galaxy. \nRelevant reading:\n\nMowla et al. 2024\, “Formation of a low-mass galaxy from star clusters in a 600-million-year-old Universe\,” Nature.\nMowla et al. 2024\, “The Firefly Sparkle: The Earliest Stages of the Assembly of A Milky Way-type Galaxy in a 600 Myr Old Universe\,” submitted.\nāĻ“āĻ¯āĻŧā§‡āĻŦā§‡āĻ° āĻĻā§‡āĻ–āĻž āĻ—ā§āĻ¯āĻžāĻ˛āĻžāĻ•ā§āĻ¸āĻŋ āĻĢāĻžāĻ¯āĻŧāĻžāĻ°āĻĢā§āĻ˛āĻžāĻ‡ āĻ¸ā§āĻĒāĻžāĻ°ā§āĻ•āĻ˛ āĻ¯ā§‡āĻ¨ āĻāĻ• āĻāĻžāĻāĻ• āĻœā§‹āĻ¨āĻžāĻ•āĻŋ; āĻ•āĻžāĻ¸āĻž āĻ¨āĻŋāĻ‰āĻœāĨ¤\n\nDr. Mowla will give the talk in-person at IUB. The event is open to students and researchers of all universities both offline (at IUB) and online. If you RSVP and want to join online\, a google meet link will be shared with you before the event begins. URL:https://cassa.site/event/colloquium-2/ LOCATION:Lecture Gallery MK9006\, DMK Building\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Colloquium ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/11/mowla.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241212T173000 DTEND;TZID=UTC:20241212T193000 DTSTAMP:20260514T225737 CREATED:20241210T111051Z LAST-MODIFIED:20241210T111247Z UID:3936-1734024600-1734031800@cassa.site SUMMARY:Astronomy Night 9: Technocultures in the Milky Way DESCRIPTION:Organized by Durbin. More information here: https://durbin.cc/event/an9/ URL:https://cassa.site/event/an9/ CATEGORIES:Outreach ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/12/an9.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241128T130000 DTEND;TZID=UTC:20241128T140000 DTSTAMP:20260514T225737 CREATED:20241128T052840Z LAST-MODIFIED:20250111T143824Z UID:3597-1732798800-1732802400@cassa.site SUMMARY:CASSA Colloquium 1: Galaxy Evolution in High-Density Environments: Insights from Hydrodynamic Simulations and Multi-Wavelength Observations DESCRIPTION:Speaker:\nSyeda Lammim Ahad\, PhD\, WCA Postdoctoral Fellow\, Waterloo Centre for Astrophysics\, University of Waterloo\, Canada; Associate Member\, CASSA. \nAbstract:\nGalaxies in the Universe are distributed along the intricate framework of the Cosmic Web. Groups and clusters of galaxies comprise the densest regions in this network and therefore\, are excellent cosmic laboratories to study different aspects of galaxy evolution in extreme environments. With the development of realistic cosmological hydrodynamic simulations\, we now have an excellent opportunity to study such galaxy evolution in extreme environments combining theory and observations. In this colloquium\, I will present the results from several studies exploring different properties of cluster galaxies and their host systems\, such as the spatial distribution of mass in galaxies within clusters\, the faint and diffuse stellar halo in groups and clusters\, and processes that quench star formation in massive galaxies in high-redshift clusters. I will discuss major questions\, current understanding\, and future research directions. Finally\, I will discuss the scope for conducting such research from Bangladesh\, illustrating the potential for local contributions to the global astrophysics community. \nRelevant reading:\n\n\nAhad et al.\, 2024\, An environment-dependent halo mass function as a driver for the early quenching of z â‰Ĩ 1.5 cluster galaxies\, MNRAS.\nAhad et al.\, 2023\, How to interpret measurements of diffuse light in stacked observations of groups and clusters of galaxies\, MNRAS.\nAhad et al.\, 2021\, The stellar mass function and evolution of the density profile of galaxy clusters from the Hydrangea simulations at 0 < z < 1.5\, MNRAS.\nāĻ†āĻ‡āĻ‡āĻ‰āĻŦāĻŋāĻ¤ā§‡ āĻ—ā§āĻ¯āĻžāĻ˛āĻžāĻ•ā§āĻ¸āĻŋāĻ° āĻŦāĻŋāĻŦāĻ°ā§āĻ¤āĻ¨ āĻ¨āĻŋā§Ÿā§‡ āĻ¸ā§ˆā§ŸāĻĻāĻž āĻ˛āĻžāĻŽā§â€ŒāĻŽā§€āĻŽ āĻ†āĻšāĻžāĻĻā§‡āĻ° āĻ¸ā§‡āĻŽāĻŋāĻ¨āĻžāĻ°\, āĻŦāĻŋāĻœā§āĻžāĻžāĻ¨āĻšāĻŋāĻ¨ā§āĻ¤āĻž\, āĻĒā§āĻ°āĻĨāĻŽ āĻ†āĻ˛ā§‹āĨ¤\n\n\n  URL:https://cassa.site/event/colloquium-1/ LOCATION:Lecture Gallery MK9006\, DMK Building\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Colloquium ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2024/11/ahad.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241026T203000 DTEND;TZID=UTC:20241026T220000 DTSTAMP:20260514T225737 CREATED:20241022T091928Z LAST-MODIFIED:20241022T095359Z UID:3428-1729974600-1729980000@cassa.site SUMMARY:Zoom Q&A session on Astronomy PhD admission for Bangladeshi students DESCRIPTION:Many Bangladeshi astronomers are currently engaged in research and teaching positions in various countries\, including many PhD\, postdoc\, and faculty members. On Saturday\, October 26\, at 8:30 PM\, I will be participating in an online panel discussion with five people from North American to talk about opportunities for pursuing a PhD in astronomy abroad\, specifically for Bangladeshi students. \nThe panel discussion is organized by Shajib\, a postdoc at the University of Chicago. Joining the panel will also be Lammim\, a postdoc at the University of Waterloo in Canada; Lamiya\, a faculty member at Wellesley College\, USA; Pritom\, a postdoc at UCLA; and Niranjan\, a PhD student at the University of Connecticut. \nRegistration link is available on Shajib’s website: https://www.astrobridge.org/events. URL:https://cassa.site/event/astronomy-phd-bd-students/ CATEGORIES:Meeting ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/10/poster-scaled.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241024T093000 DTEND;TZID=UTC:20241024T113000 DTSTAMP:20260514T225737 CREATED:20241022T094211Z LAST-MODIFIED:20241022T100320Z UID:3439-1729762200-1729769400@cassa.site SUMMARY:67th Anniversary of Sputnik Flight to Outer Space DESCRIPTION:Khan Asad is invited as the Chief Guest for the 67th Anniversary of the Sputnik Flight to Outer Space\, taking place on Thursday\, 24th October 2024\, at Legend International School. This significant event will celebrate humanity’s groundbreaking achievement of venturing into space\, marking the launch of the first artificial satellite\, Sputnik\, which continues to inspire generations. URL:https://cassa.site/event/67th-anniversary-of-sputnik-flight-to-outer-space/ CATEGORIES:Outreach ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2024/10/sputnik-1.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20241012T160000 DTEND;TZID=UTC:20241012T180000 DTSTAMP:20260514T225737 CREATED:20241022T100838Z LAST-MODIFIED:20241022T101203Z UID:3446-1728748800-1728756000@cassa.site SUMMARY:Open Discussion at Quantum Foundation DESCRIPTION: URL:https://cassa.site/event/open-discussion-at-quantum-foundation/ CATEGORIES:Outreach ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/10/quantum-foundation.webp END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240915 DTEND;VALUE=DATE:20240920 DTSTAMP:20260514T225737 CREATED:20240220T054029Z LAST-MODIFIED:20240220T145531Z UID:2862-1726358400-1726790399@cassa.site SUMMARY:SCOSTEP/ISWI International School on Space Science 2024 DESCRIPTION:SCOSTEP/ISWI International School on Space Science 2024 will be held in Kathmandu\, Nepal. The event is sponsored by International Space Weather Initiative (ISWI) and the Scientific Committee on Solar-Terrestrial Physics (SCOSTEP) and hosted by Nepal Physical Society (NPS). The school is meant for mainly graduate students and anyone with at least a BSc in physics or a related field can apply for participating in the event. \nStudents can apply using this Google Form. \nDeadline for application: 31 May 2024. URL:https://cassa.site/event/iswi-isss-2024/ CATEGORIES:School ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/02/noaa-space-weather.webp END:VEVENT BEGIN:VEVENT DTSTART;VALUE=DATE:20240424 DTEND;VALUE=DATE:20240427 DTSTAMP:20260514T225737 CREATED:20240220T055557Z LAST-MODIFIED:20240220T055613Z UID:2868-1713916800-1714175999@cassa.site SUMMARY:LOFAR-EoR Plenary Meeting 2024 DESCRIPTION: URL:https://cassa.site/event/lofar-eor-pm-2024/ CATEGORIES:Meeting ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2024/02/LOFAR_Superterp.webp END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20231102T190000 DTEND;TZID=UTC:20231102T210000 DTSTAMP:20260514T225737 CREATED:20231013T184726Z LAST-MODIFIED:20231013T184726Z UID:1936-1698951600-1698958800@cassa.site SUMMARY:Astronomy Night 4 DESCRIPTION: URL:https://cassa.site/event/astronomy-night-4/ LOCATION:IUB Room BC2022\, Digital Classroom\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2023/08/Add-a-little-bit-of-body-text.jpg END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20231012T190000 DTEND;TZID=UTC:20231012T210000 DTSTAMP:20260514T225737 CREATED:20231010T102941Z LAST-MODIFIED:20231011T110518Z UID:1632-1697137200-1697144400@cassa.site SUMMARY:IUB Astronomy Night III DESCRIPTION:Regular Astronomy Nights (stargazing events) are beginning at IUB starting from this Thursday. You will get the chance to take images of the sky using a Unistellar eQuinox telescope and see the images on a large monitor at the Digital Classroom of IUB (BC2022). \nIf more than half of the sky is covered in clouds\, the images taken by eQuinox so far will be shown in BC2022 accompanied by an informal discussion and Q&A with an astronomer. \nThe event is open to people of all ages from anywhere. However\, please remember to RSVP before you come and also to check-in at Room BC2022 on time. URL:https://cassa.site/event/an3/ LOCATION:IUB Room BC2022\, Digital Classroom\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh ATTACH;FMTTYPE=image/webp:https://cassa.site/wp-content/uploads/2023/10/English-1.webp ORGANIZER;CN="Astronomy and Radio Research Group%2C IUB (ARGI)":MAILTO:arg@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20231012T140000 DTEND;TZID=UTC:20231012T150000 DTSTAMP:20260514T225737 CREATED:20231011T054807Z LAST-MODIFIED:20241203T093519Z UID:1652-1697119200-1697122800@cassa.site SUMMARY:COALab Colloquium 1 DESCRIPTION:Title: Pulsars: The Incredible Physics of Incredible Stars \nSpeaker: Afiq Abdul Hamid\, PhD student\, Victoria University of Wellington\, New Zealand. \nAbstract: Pulsars/ Neutron Stars are exotic stellar remnants that exist as laboratories of extreme physics. Since their discovery 60 years ago\, the study of pulsars has expanded to become a fertile field of radio astronomical research. This talk will give a broad view of the current field of radio pulsar astronomy to date with an additional look to the future horizons of the field in order to entice students to further pursue a potential future this in the area. \n\nYou can see a Famelab Heats talk by the speaker at this google drive link. URL:https://cassa.site/event/coalab-colloquium-1/ LOCATION:IUB Room BC2022\, Digital Classroom\, IUB\, Plot 16\, Aftabuddin Ahmed Road\, Block B\, Bashundhara RA\, Dhaka\, 1229\, Bangladesh CATEGORIES:Meeting ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2023/07/vla-3.jpg ORGANIZER;CN="Astronomy and Radio Research Group%2C IUB (ARGI)":MAILTO:arg@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20230413T193000 DTEND;TZID=UTC:20230413T213000 DTSTAMP:20260514T225737 CREATED:20230330T081113Z LAST-MODIFIED:20230410T021658Z UID:727-1681414200-1681421400@cassa.site SUMMARY:IUB Astronomy Night II DESCRIPTION:Join us on the roof of the academic building of IUB for Astronomy Night II on 13 April 2023\, 7:30 pm. Tanweer Hasan\, PhD\, the honorable Vice Chancellor of IUB\, announced the beginning of astronomy nights on 9 March 2023 and ARGI will organize these nights of stargazing and open discussion regularly. Most of the astronomy nights will be open to everyone\, but this week we are welcoming only IUB students\, faculty and staff. Hope to see you all under a starry night! \nWeather permitting\, you can see the sky via the screen of our eQuinox telescope on the roof. Looking at the solar system objects through the eyepiece of a Celestron telescope or through a couple of binoculars are also possible. You can engage with our ‘astronomy nighthawks’ (undergraduate students) and ask an astronomer (Dr. Khan Asad) your questions about the universe. \nPlease register for the event by clicking on the Going (RSVP) button on the sidebar. \nThis Astronomy Night will also be a celebration of the last day of the Bangla calendar\, 30 Chaitra 1429. URL:https://cassa.site/event/an2/ ATTACH;FMTTYPE=image/png:https://cassa.site/wp-content/uploads/2023/03/English.png ORGANIZER;CN="Astronomy Research Group%2C IUB":MAILTO:arg@iub.edu.bd END:VEVENT BEGIN:VEVENT DTSTART;TZID=UTC:20230309T170000 DTEND;TZID=UTC:20230309T210000 DTSTAMP:20260514T225737 CREATED:20230408T073834Z LAST-MODIFIED:20230409T103342Z UID:926-1678381200-1678395600@cassa.site SUMMARY:IUB Astronomy Night I DESCRIPTION:The first IUB Astronomy Night was on 9 March 2023. Please see the poster of the event below. \n \nNational and Regional volunteers of Durbin after an evening of hard work. URL:https://cassa.site/event/an1/ LOCATION:IUB Auditorium\, Independent University\, Bangladesh\, Dhaka\, Bangladesh ATTACH;FMTTYPE=image/jpeg:https://cassa.site/wp-content/uploads/2023/03/durbin-inauguration-1.jpg ORGANIZER;CN="Astronomy Research Group%2C IUB":MAILTO:arg@iub.edu.bd END:VEVENT END:VCALENDAR