100 citations · 444 across the 13 of their papers we have counts for
13 papers · 1 filter
AT2020ohl: its nature and probable implications
Rupak Roy, Samir Mandal, D. K. Sahu +3
ASASSN-20hx, a.k.a AT2020ohl, is an ambiguous nuclear transient (ANT), which was discovered in the nearby galaxy NGC6297 by the All-Sky Automated Survey for Supernovae (ASAS-SN). W…
Photometric and spectroscopic evolution of the peculiar Type IIn SN 2012ab
Anjasha Gangopadhyay, Massimo Turatto, Stefano Benetti +15
We present an extensive ( 1200 d) photometric and spectroscopic monitoring of the Type IIn supernova (SN) 2012ab. After a rapid initial rise leading to a bright maximum (M$_{…
Optical studies of two stripped envelope supernovae SN 2015ap (Type Ib) and SN 2016P (Type Ic)
Anjasha Gangopadhyay, Kuntal Misra, D. K. Sahu +14
We present the photometric and spectroscopic studies of a Type Ib SN 2015ap and a Type Ic SN 2016P. SN 2015ap is one of the bright (M = 18.04 mag) Type Ib while SN 2016P l…
SN 2016B a.k.a ASASSN-16ab: a transitional type II supernova
Raya Dastidar, Kuntal Misra, Mridweeka Singh +12
We present photometry, polarimetry and spectroscopy of the Type II supernova ASASSN-16ab/SN 2016B in PGC 037392. The photometric and spectroscopic follow-up commenced about two wee…
SN 2015as: A low luminosity Type IIb supernova without an early light curve peak
Anjasha Gangopadhyay, Kuntal Misra, A. Pastorello +14
We present results of the photometric (from 3 to 509 days past explosion) and spectroscopic (up to 230 days past explosion) monitoring campaign of the He-rich Type IIb supernova (S…
SN 2012aa - a transient between Type Ibc core-collapse and superluminous supernovae
R. Roy, J. Sollerman, J. M. Silverman +21
Context: Research on supernovae (SNe) over the past decade has confirmed that there is a distinct class of events which are much more luminous (by mag) than canonical core-…
Photometric and polarimetric observations of fast declining Type II supernovae 2013hj and 2014G
Subhash Bose, Brijesh Kumar, Kuntal Misra +5
We present broadband photometric and polarimetric observations of two type II supernovae (SNe) 2013hj and 2014G. SN 2014G is a spectroscopically classified type IIL event, which we…
SN 2013ab : A normal type IIP supernova in NGC 5669
Subhash Bose, Stefano Valenti, Kuntal Misra +13
We present densely-sampled ultraviolet/optical photometric and low-resolution optical spectroscopic observations of the type IIP supernova 2013ab in the nearby (24 Mpc) galax…
SN 2007uy - metamorphosis of an aspheric Type Ib explosion
Rupak Roy, Brijesh Kumar, Justyn R. Maund +13
The supernovae of Type Ibc are rare and the detailed characteristics of these explosions have been studied only for a few events. Unlike Type II SNe, the progenitors of Type Ibc ha…
Supernova 2012aw - a high-energy clone of archetypal type IIP SN 1999em
Subhash Bose, Brijesh Kumar, Firoza Sutaria +8
We present densely-sampled UBVRI/griz photometric and low-resolution (6-10A) optical spectroscopic observations from 4 to 270 days after explosion of a newly discovered type II SN…
The optical photometric and spectroscopic investigation of Type IIP supernova 2012A
Rupak Roy, Firoza Sutaria, Subhash Bose +11
Supernova 2012A was discovered on 7.39UT, January, 2012 in the nearby galaxy NGC 3239 at an unfiltered magnitude of 14.6 and classified spectroscopically as a Type IIP event. Here,…
Light curve and spectral evolution of the Type IIb SN 2011fu
Brajesh Kumar, S. B. Pandey, D. K. Sahu +13
We present the low-resolution spectroscopic and UBVRI broad-band photometric investigations of the Type IIb supernova 2011fu, discovered in UGC 01626. The photometric follow-up of…
Intranight optical variability of γ-ray loud Narrow Line Seyfert 1 galaxies
Vaidehi S. Paliya, C. S. Stalin, Brijesh Kumar +4
The Large Area Telescope (LAT) onboard the {\it Fermi} Gamma Ray Space Telescope has detected γ-ray emission from some Narrow Line Seyfert 1(NLSy1) galaxies. This indicates the pre…