Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Nayana, A. J."'
Autor:
Sebastian, Biny, Caproni, Anderson, Kharb, Preeti, Nayana, A. J., Ali, Arshi, Rubinur, K., O'Dea, Christopher P., Baum, Stefi, Nandi, Sumana
Identifying methods to discover dual AGN has proven to be challenging. Several indirect tracers have been explored in the literature, including X/S-shaped radio morphologies and double-peaked (DP) emission lines in the optical spectra. However, the d
Externí odkaz:
http://arxiv.org/abs/2402.12521
Autor:
Nayana, A. J., Anupama, G. C., Roy, Nirupam, Banerjee, Dipankar P. K., Singh, Kulinder Pal, S., Sonith L., Kamath, U. S.
We present low-frequency radio observations of the Galactic symbiotic recurrent nova RS Ophiuchi during its 2021 outburst. The observations were carried out with the upgraded Giant Metrewave Radio Telescope (uGMRT) spanning a frequency range of 0.15$
Externí odkaz:
http://arxiv.org/abs/2401.05643
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 forward shocked region as a result of circumstellar interaction. We are ab
Externí odkaz:
http://arxiv.org/abs/2311.04384
Autor:
Andreoni, Igor, Coughlin, Michael W., Perley, Daniel A., Yao, Yuhan, Lu, Wenbin, Cenko, S. Bradley, Kumar, Harsh, Anand, Shreya, Ho, Anna Y. Q., Kasliwal, Mansi M., Postigo, Antonio de Ugarte, Sagues-Carracedo, Ana, Schulze, Steve, Kann, D. Alexander, Kulkarni, S. R., Sollerman, Jesper, Tanvir, Nial, Rest, Armin, Izzo, Luca, Somalwar, Jean J., Kaplan, David L., Ahumada, Tomas, Anupama, G. C., Auchettl, Katie, Barway, Sudhanshu, Bellm, Eric C., Bhalerao, Varun, Bloom, Joshua S., Bremer, Michael, Bulla, Mattia, Burns, Eric, Campana, Sergio, Chandra, Poonam, Charalampopoulos, Panos, Cooke, Jeff, D'Elia, Valerio, Das, Kaustav Kashyap, Dobie, Dougal, Fernández, José Feliciano Agüí, Freeburn, James, Fremling, Cristoffer, Gezari, Suvi, Goode, Simon, Graham, Matthew, Hammerstein, Erica, Karambelkar, Viraj R., Kilpatrick, Charles D., Kool, Erik C., Krips, Melanie, Laher, Russ R., Leloudas, Giorgos, Levan, Andrew, Lundquist, Michael J., Mahabal, Ashish A., Medford, Michael S., Miller, M. Coleman, Möller, Anais, Mooley, Kunal, Nayana, A. J., Nir, Guy, Pang, Peter T. H., Paraskeva, Emmy, Perley, Richard A., Petitpas, Glen, Pursiainen, Miika, Ravi, Vikram, Ridden-Harper, Ryan, Riddle, Reed, Rigault, Mickael, Rodriguez, Antonio C., Rusholme, Ben, Sharma, Yashvi, Smith, I. A., Stein, Robert D., Thöne, Christina, Tohuvavohu, Aaron, Valdes, Frank, van Roestel, Jan, Vergani, Susanna D., Wang, Qinan, Zhang, Jielai
Tidal disruption events (TDEs) are bursts of electromagnetic energy released when supermassive black holes (SMBHs) at the centers of galaxies violently disrupt a star that passes too close. TDEs provide a new window to study accretion onto SMBHs; in
Externí odkaz:
http://arxiv.org/abs/2211.16530
We present extensive radio monitoring of a type IIb supernova (SN IIb), SN 2016gkg during $t \sim$ 8$-$1429 days post explosion at frequencies $\nu \sim$ 0.33$-$25 GHz. The detailed radio light curves and spectra are broadly consistent with self-abso
Externí odkaz:
http://arxiv.org/abs/2206.12103
Autor:
Dutta, Anirban, Sahu, D. K., Anupama, G. C., Joharle, Simran, Kumar, Brajesh, Nayana, A. J., Singh, Avinash, Kumar, Harsh, Bhalerao, Varun, Barway, Sudhansu
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 the photometric analysis we find $\Delta m_{\rm{B}}$(15) = 2.03$\pm$0.0
Externí odkaz:
http://arxiv.org/abs/2111.01226
Publikováno v:
The Astrophysical Journal Letters, Vol 963, Iss 1, p L4 (2024)
We report Chandra-ACIS observations of supernova (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 forward shocked region as a result of circumstellar interactio
Externí odkaz:
https://doaj.org/article/ca261daf029540b79b466112612f89ba
Autor:
Nayana, A. J., Chandra, Poonam
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 span $t =$ 11 $-$ 570 days post-explosion and a frequency range of 25
Externí odkaz:
http://arxiv.org/abs/2103.06008
Autor:
Nayana, A. J, Naslim, N., Onishi, T., Kemper, F., Tokuda, K., Madden, S. C., Morata, O., Nasri, S., Galametz, M.
We present the results of high spatial resolution HCO$^{+}$($1-0$) and HCN($1-0$) observations of N55 south region (N55-S) in the Large Magellanic Cloud (LMC), obtained with the Atacama Large Millimeter/submillimeter Array (ALMA). N55-S is a relative
Externí odkaz:
http://arxiv.org/abs/2009.00383
Autor:
Coppejans, D. L., Margutti, R., Terreran, G., Nayana, A. J., Coughlin, E. R., Laskar, T., Alexander, K. D., Bietenholz, M., Caprioli, D., Chandra, P., Drout, M., Frederiks, D., Frohmaier, C., Hurley, K., Kochanek, C. S., MacLeod, M., Meisner, A., Nugent, P. E., Ridnaia, A., Sand, D. J., Svinkin, D., Ward, C., Yang, S., Baldeschi, A., Chilingarian, I. V., Dong, Y., Esquivia, C., Fong, W., Guidorzi, C., Lundqvist, P., Milisavljevic, D., Paterson, K., Reichart, D. E., Shappee, B., Stroh, M. C., Valenti, S., Zauderer, A., Zhang, B.
We present X-ray and radio observations of the Fast Blue Optical Transient (FBOT) CRTS-CSS161010 J045834-081803 (CSS161010 hereafter) at t=69-531 days. CSS161010 shows luminous X-ray ($L_x\sim5\times 10^{39}\,\rm{erg\,s^{-1}}$) and radio ($L_{\nu}\si
Externí odkaz:
http://arxiv.org/abs/2003.10503