Analyzing type Ia supernovae near-infrared light curves with Principal Component Analysis

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Abstract: Type Ia supernovae (SNeIa), the thermonuclear explosions of C/O white dwarf stars in binary systems, are phenomena that remain poorly understood. The complexity of their progenitor systems, explosion physics and intrinsic diversity…

The SARAO MeerKAT 1.3 GHz Galactic Plane Survey

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We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half of the Galactic Plane ($251^\circ \le l \le 358^\circ$ and $2^\circ \le l \le 61^\circ$ at $|b| \le 1.5^\circ$). SMGPS is the…

Morphological classification of Radio Galaxies using Semi-Supervised Group Equivariant CNNs

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Out of the estimated few trillion galaxies, only around a million have been detected through radio frequencies, and only a tiny fraction, approximately a thousand, have been manually classified. We have addressed this disparity between labeled…

পালসারের বিমে স্থানকালের ঢেউ

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আজ থেকে প্রায় ১৩০ কোটি বছর আগে এক জোড়া সাধারণ ব্ল্যাকহোল একসাথে মিলে আরো বড় একটা ব্ল্যাকহোল…

Mining mini-halos with MeerKAT I. Calibration and imaging

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Radio mini-halos are clouds of diffuse, low-surface brightness synchrotron emission that surround the Brightest Cluster Galaxy (BCG) in massive cool-core galaxy clusters. In this paper, we use third generation calibration (3GC), also called…

The 1.28 GHz MeerKAT Galactic Center Mosaic

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The inner $\sim 200$ pc region of the Galaxy contains a 4 million $M_\odot$ supermassive black hole (SMBH), significant quantities of molecular gas, and star formation and cosmic-ray energy densities that are roughly two orders of magnitude…

The 1.28 GHz MeerKAT DEEP2 Image

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We present the confusion-limited 1.28 GHz MeerKAT DEEP2 image covering one $\theta_b\approx 68'$ FWHM primary-beam area with $\theta=7.6^{''}$ FWHM resolution and $\sigma_n=0.55\pm 0.01$ $\mu$Jy beam$^{-1}$ rms noise. Its J2000 center position…