BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CASSA - ECPv6.16.2//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
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:20230101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=UTC:20250105T130000
DTEND;TZID=UTC:20250105T140000
DTSTAMP:20260514T234034
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:20260514T234034
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.\nওয়েবের দেখা গ্যালাক্সি ফায়ারফ্লাই স্পার্কল যেন এক ঝাঁক জোনাকি; কাসা নিউজ।\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:20241128T130000
DTEND;TZID=UTC:20241128T140000
DTSTAMP:20260514T234034
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 ≥ 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.\nআইইউবিতে গ্যালাক্সির বিবর্তন নিয়ে সৈয়দা লাম্‌মীম আহাদের সেমিনার\, বিজ্ঞানচিন্তা\, প্রথম আলো।\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
END:VCALENDAR