Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Sahu, Devendra"'
Autor:
Gangopadhyay, Anjasha, Dukiya, Naveen, Moriya, Takashi J, Tanaka, Masaomi, Maeda, Keiichi, Howell, D. Andrew, Singh, Mridweeka, Singh, Avinash, Sollerman, Jesper, Kawabata, Koji S, Brennan, Sean J, Pellegrino, Craig, Dastidar, Raya, Misra, Kuntal, Kawabata, Tatsuya Nakaoka Miho, Schulze, Steve, Chandra, Poonam, Taguchi, Kenta, Sahu, Devendra K, McCully, Curtis, Bostroem, K. Azalee, Gonzalez, Estefania Padilla, Newsome, Megan, Hiramatsu, Daichi, Takei, Yuki, Yamanaka, Masayuki
We present the long-term photometric and spectroscopic monitoring campaign of a transitioning SN~IIn/Ibn from $-$10.8 d to 150.7 d post $V$-band maximum. SN~2021foa shows prominent He i lines comparable in strength to the H$\alpha$ line around peak l
Externí odkaz:
http://arxiv.org/abs/2409.02666
Autor:
Joshi, Arti, Catelan, Márcio, Scaringi, Simone, Schwope, Axel, Anupama, G. C., Rawat, Nikita, Sahu, Devendra K., Singh, Mridweeka, Dastidar, Raya, Subramanian, Rama Venkata, Rao, Srinivas M
We present the analysis of optical photometric and spectroscopic observations of two non-magnetic cataclysmic variables, namely CRTS J080846.2+313106 and V416 Dra. CRTS J080846.2+313106 has been found to vary with a period of 4.9116$\pm$0.0003 h, whi
Externí odkaz:
http://arxiv.org/abs/2407.07387
Autor:
Aravind, K, Venkataramani, Kumar, Ganesh, Shashikiran, Surya, Arun, Sivarani, Thirupathi, Sahu, Devendra, Unni, Athira, Bhardwaj, Anil
Observing the vibrational/rotational lines in a comet's optical spectrum requires high-resolution spectroscopy, as they are otherwise seen as a blended feature. To achieve this, we have obtained medium and high-resolution (R ($\lambda/\Delta \lambda$
Externí odkaz:
http://arxiv.org/abs/2403.01595
Autor:
Singh, Mridweeka, Sahu, Devendra. K., Dastidar, Raya, Barna, Barnabas, Misra, Kuntal, Gangopadhyay, Anjasha, Howell, D. Andrew, Jha, Saurabh W., Im, Hyobin, Taggart, Kirsty, Andrews, Jennifer, Hiramatsu, Daichi, Teja, Rishabh Singh, Pellegrino, Craig, Foley, Ryan J., Joshi, Arti, Anupama, G. C., Bostroem, K. Azalee, Burke, Jamison, Camacho-Neves, Yssavo, Dutta, Anirban, Kwok, Lindsey A., McCully, Curtis, Pan, Yen-Chen, Siebert, Matt, Srivastav, Shubham, Szalai, Tamas, Swift, Jonathan J., Yang, Grace, Zhou, Henry, DiLullo, Nico, Scheer, Jackson
We present the optical photometric and spectroscopic analysis of two type Iax SNe 2018cni and 2020kyg. SN 2018cni is a bright type Iax SN (M$_{V,peak}$ = $-$17.81$\pm$0.21 mag) whereas SN 2020kyg (M$_{V,peak}$ = $-$14.52$\pm$0.21 mag) is a faint one.
Externí odkaz:
http://arxiv.org/abs/2305.12713
Autor:
Singh, Koshvendra, Ojha, Devendra K., Ninan, Joe P., Sharma, Saurabh, Ghosh, Supriyo, Ghosh, Arpan, Bhatt, Bhuwan C., Sahu, Devendra K.
LDN1415-IRS, a low-mass young stellar object (YSO) went into an outburst between 2001 and 2006, illuminating a surrounding nebula, LDN1415-Neb. LDN1415-Neb was found to have brightened by I=3.77 mag by April 2006. The optical light curve covering $\s
Externí odkaz:
http://arxiv.org/abs/2303.09118
Autor:
Bufanda, Erica, Meech, Karen J., Kleyna, Jan T., Hainaut, Olivier R., Bauer, James M., Stephens, Haynes, Veres, Peter, Micheli, Marco, Keane, Jacqueline V., Weryk, Robert, Wainscoat, Richard, Sahu, Devendra K., Bhatt, Bhuwan C.
2009 MS9 is a trans-Neptunian object (TNO) whose perihelion brings it close to the distance where some long period comets are seen to become active. Knowing this, and the fact that this object appears to brighten in excess of it's predicted nucleus b
Externí odkaz:
http://arxiv.org/abs/2211.02664
Autor:
Singh, Mridweeka, Misra, Kuntal, Sahu, Devendra K., Ailawadhi, Bhavya, Dutta, Anirban, Howell, D. Andrew, Anupama, G. C., Bostroem, K. Azalee, Burke, Jamison, Dastidar, Raya, Gangopadhyay, Anjasha, Hiramatsu, Daichi, Im, Hyobin, McCully, Curtis, Pellegrino, Craig, Srivastav, Shubham, Teja, Rishabh Singh
We present optical photometric and spectroscopic analysis of a Type Iax supernova (SN) 2020rea situated at the brighter luminosity end of Type Iax supernovae (SNe). The light curve decline rate of SN~2020rea is $\Delta$m$_{15}$(g) = 1.31$\pm$0.08 mag
Externí odkaz:
http://arxiv.org/abs/2210.11752
Autor:
Aravind, K., Halder, Prithish, Ganesh, Shashikiran, Sahu, Devendra, Serra-Ricart, Miquel, Chambó, José J., Angchuk, Dorje, Sivarani, Thirupathi
Comet 156P/Russell-LINEAR is a short period Jupiter family comet with an orbital period of 6.44 years. The results from spectroscopic, photometric, polarimetric observations and dust modelling studies are presented here. From the spectroscopic study,
Externí odkaz:
http://arxiv.org/abs/2204.09727
Autor:
Kawabata, Miho, Maeda, Keiichi, Yamanaka, Masayuki, Nakaoka, Tatsuya, Kawabata, Koji S., Aoki, Kentaro, Anupama, G. C., Burgaz, Umut, Dutta, Anirban, Isogai, Keisuke, Kino, Masaru, Kojiguchi, Naoto, Kota, Iida, Kumar, Brajesh, Kuroda, Daisuke, Maehara, Hiroyuki, Matsubayashi, Kazuya, Morihana, Kumiko, Murata, Katsuhiro L., Ohshima, Tomohito, Otsuka, Masaaki, Sahu, Devendra K., Singh, Avinash, Sugitani, Koji, Takahashi, Jun, Takagi, Kengo
We present comprehensive spectroscopic and photometric analyses of the intermediate luminosity Type Iax supernova (SN Iax) 2019muj based on multi-band datasets observed through the framework of the OISTER target-of-opportunity program. SN 2019muj exh
Externí odkaz:
http://arxiv.org/abs/2107.02822
Autor:
Piro, Caroline, Meech, Karen J., Bufanda, Erica, Kleyna, Jan T., Keane, Jacqueline V., Hainaut, Olivier, Micheli, Marco, Bauer, James, Denneau, Larry, Weryk, Robert, Bhatt, Bhuwan C., Sahu, Devendra K., Wainscoat, Richard
Manx objects approach the inner solar system on long-period comet (LPC) orbits with the consequent high inbound velocities, but unlike comets, Manxes display very little to no activity even near perihelion. This suggests that they may have formed in
Externí odkaz:
http://arxiv.org/abs/2101.04830