39 citations · 119 across the 16 of their papers we have counts for
16 papers
Constraining inhomogeneities and asymmetries in SNe, FBOTs, and other high-energy transients from unresolved radio observations
Fabio De Colle, Rosa L. Becerra, Lizeth A. Meza +7
Synchrotron emission in high-energy transients is produced by relativistic electrons accelerated by shocks. As high-energy transients are often unresolved even on angular scales pr…
Multiwavelength Analysis of Six Luminous Fast Blue Optical Transients
Cassie Sevilla, Anna Y. Q. Ho, Nayana A. J. +43
We present multiwavelength observations and analysis of six luminous fast blue optical transients (LFBOTs) discovered in Zwicky Transient Facility (ZTF) survey data. We identified…
Radio Follow-Up Observations of a Weak-Line Quasar Exhibiting Remarkable X-ray Variability
Ayushi Chhipa, M. Vivek, Nayana A. J. +6
SDSSJ1539+3954 (), a radio-quiet weak-line quasar (WLQ), exhibited exceptional X-ray variability in 20192020, with its X-ray flux increasing by over 20 times fro…
The first radio view of a type Ibn supernova in SN 2023fyq: Understanding the mass-loss history in the last decade before the explosion
Raphael Baer-Way, A. J. Nayana, Wynn Jacobson-Galan +13
Supernovae that interact with hydrogen-poor, helium-rich circumstellar material (CSM), known as Type Ibn supernovae (SNe Ibn), present a unique opportunity to probe mass-loss proce…
The Most Luminous Known Fast Blue Optical Transient AT 2024wpp: Unprecedented Evolution and Properties in the X-rays and Radio
A. J. Nayana, Raffaella Margutti, Eli Wiston +34
We present X-ray (0.3--79 keV) and radio (0.25--203 GHz) observations of the most luminous Fast Blue Optical Transient (LFBOT) AT\,2024wpp at , spanning 2--280 days after…
A Multiwavelength Autopsy of the Interacting IIn Supernova 2020ywx: Tracing its Progenitor Mass-Loss History for 100 Years before Death
Raphael Baer-Way, Poonam Chandra, Maryam Modjaz +31
While the subclass of interacting supernovae with narrow hydrogen emission lines (SNe IIn) consists of some of the longest-lasting and brightest SNe ever discovered, their progenit…
Minutes-duration Optical Flares with Supernova Luminosities
Anna Y. Q. Ho, Daniel A. Perley, Ping Chen +74
In recent years, certain luminous extragalactic optical transients have been observed to last only a few days. Their short observed duration implies a different powering mechanism…
Chandra's insights into SN 2023ixf
Poonam Chandra, Roger A. Chevalier, Keiichi Maeda +2
We report Chandra-ACIS observations of SN 2023ixf in M101 on day 13 and 86 since the explosion. The X-rays in both epochs are characterized by high temperature plasma from the forw…
Lepto-hadronic interpretation of 2021 RS Ophiuchi nova outburst
Agnibha De Sarkar, Nayana A. J., Nirupam Roy +2
Very high energy (VHE; 100 GeV E 100 TeV) and high energy (HE; 100 MeV E 100 GeV) gamma-rays were observed from the symbiotic recurrent nova RS Ophiuchi (RS O…
AT2019wxt: An ultra-stripped supernova candidate discovered in electromagnetic follow-up of a gravitational wave trigger
Hinna Shivkumar, Amruta D. Jaodand, Arvind Balasubramanian +13
We present optical, radio and X-ray observations of a rapidly-evolving transient AT2019wxt (PS19hgw), discovered during the search for an electromagnetic (EM) counterpart to the gr…
Radio evolution of a Type IIb supernova SN 2016gkg
A. J. Nayana, Poonam Chandra, Anoop Krishna +1
We present extensive radio monitoring of a type IIb supernova (SN IIb), SN 2016gkg during 81429 days post explosion at frequencies 0.3325 GHz. The detailed r…
The X-ray and Radio Loud Fast Blue Optical Transient AT2020mrf: Implications for an Emerging Class of Engine-Driven Massive Star Explosions
Yuhan Yao, Anna Y. Q. Ho, Pavel Medvedev +9
We present AT2020mrf (SRGe J154754.2443907), an extra-galactic () fast blue optical transient (FBOT) with a rise time of days and a peak luminosit…
SN 2020sck: deflagration in a carbon-oxygen white dwarf
Anirban Dutta, D. K. Sahu, G. C. Anupama +7
We present optical UBVRI photometry and low-to-medium resolution spectroscopic observations of type Iax SN 2020sck spanning -5.5 d to +67 d from maximum light in the B-band. From t…
uGMRT observations of a Fast and Blue Optical Transient -- AT 2018cow
A. J. Nayana, Poonam Chandra
We present low-frequency radio observations of a fast-rising blue optical transient (FBOT), AT\,2018cow, with the upgraded Giant Metrewave Radio Telescope (uGMRT). Our observations…
Radio view of a broad-line Type Ic supernova ASASSN-16fp
Nayana A. J., Poonam Chandra
We present extensive radio observations of a Type Ic supernova, ASASSN-16fp. Our data represents the lowest frequency observations of the SN beyond 1000 days with a frequency range…
Long term behaviour of a Type IIP supernova SN 2004dj in the radio bands
Nayana A J, Poonam Chandra, Alak K. Ray
We present radio observations and modelling of one of the nearest and brightest Type IIP supernova SN\,2004dj exploded in the galaxy NGC 2403 at a distance of 3.5 Mpc. Our o…