Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Anjasha Gangopadhyay"'
Autor:
Mridweeka Singh, Devendra K. Sahu, Barnabás Barna, Anjasha Gangopadhyay, Raya Dastidar, Rishabh Singh Teja, Kuntal Misra, D. Andrew Howell, Xiaofeng Wang, Jun Mo, Shengyu Yan, Daichi Hiramatsu, Craig Pellegrino, G. C. Anupama, Arti Joshi, K. Azalee Bostroem, Jamison Burke, Curtis McCully, Rama Subramanian V, Gaici Li, Gaobo Xi, Xin Li, Zhitong Li, Shubham Srivastav, Hyobin Im, Anirban Dutta
Publikováno v:
The Astrophysical Journal, Vol 965, Iss 1, p 73 (2024)
We present optical observations and analysis of the bright type Iax supernova SN 2020udy hosted by NGC 0812. The evolution of the light curve of SN 2020udy is similar to that of other bright type Iax SNe. Analytical modeling of the quasi-bolometric l
Externí odkaz:
https://doaj.org/article/2f099c2c4011403da4febb4b252c6922
Autor:
Anjasha Gangopadhyay, Keiichi Maeda, Avinash Singh, Nayana A. J., Tatsuya Nakaoka, Koji S. Kawabata, Kenta Taguchi, Mridweeka Singh, Poonam Chandra, Stuart D. Ryder, Raya Dastidar, Masayuki Yamanaka, Miho Kawabata, Rami Z. E. Alsaberi, Naveen Dukiya, Rishabh Singh Teja, Bhavya Ailawadhi, Anirban Dutta, D. K. Sahu, Takashi J. Moriya, Kuntal Misra, Masaomi Tanaka, Roger Chevalier, Nozomu Tominaga, Kohki Uno, Ryo Imazawa, Taisei Hamada, Tomoya Hori, Keisuke Isogai
Publikováno v:
The Astrophysical Journal, Vol 957, Iss 2, p 100 (2023)
We present optical, near-infrared, and radio observations of supernova (SN) SN IIb 2022crv. We show that it retained a very thin H envelope and transitioned from an SN IIb to an SN Ib; prominent H α seen in the pre-maximum phase diminishes toward th
Externí odkaz:
https://doaj.org/article/f555b78f96b043cc891a0288f4445391
Autor:
Mridweeka Singh, Devendra. K. Sahu, Raya Dastidar, Barnabás Barna, Kuntal Misra, Anjasha Gangopadhyay, D. Andrew Howell, Saurabh W. Jha, Hyobin Im, Kirsty Taggart, Jennifer Andrews, Daichi Hiramatsu, Rishabh Singh Teja, Craig Pellegrino, Ryan J. Foley, Arti Joshi, G. C. Anupama, K. Azalee Bostroem, Jamison Burke, Yssavo Camacho-Neves, Anirban Dutta, Lindsey A. Kwok, Curtis McCully, Yen-Chen Pan, Matt Siebert, Shubham Srivastav, Tamás Szalai, Jonathan J. Swift, Grace Yang, Henry Zhou, Nico DiLullo, Jackson Scheer
Publikováno v:
The Astrophysical Journal, Vol 953, Iss 1, p 93 (2023)
We present the optical photometric and spectroscopic analysis of two Type Iax supernovae (SNe), 2018cni and 2020kyg. SN 2018cni is a bright Type Iax SN ( M _V _,peak = −17.81 ± 0.21 mag), whereas SN 2020kyg ( M _V _,peak = −14.52 ± 0.21 mag) is
Externí odkaz:
https://doaj.org/article/11889789405540c8bb1926f35120e116
Autor:
Mridweeka Singh, Kuntal Misra, Devendra K Sahu, Bhavya Ailawadhi, Anirban Dutta, D Andrew Howell, G C Anupama, K Azalee Bostroem, Jamison Burke, Raya Dastidar, Anjasha Gangopadhyay, Daichi Hiramatsu, Hyobin Im, Curtis McCully, Craig Pellegrino, Shubham Srivastav, Rishabh Singh Teja
Publikováno v:
Singh, M, Misra, K, Sahu, D K, Ailawadhi, B, Dutta, A, Howell, D A, Anupama, G C, Bostroem, K A, Burke, J, Dastidar, R, Gangopadhyay, A, Hiramatsu, D, Im, H, McCully, C, Pellegrino, C, Srivastav, S & Teja, R S 2022, ' Optical studies of a bright Type Iax supernova SN 2020rea ', Monthly Notices of the Royal Astronomical Society, vol. 517, no. 4, pp. 5617–5626 . https://doi.org/10.1093/mnras/stac3059
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$0.08 mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ffcc3c5f341319991257accd24bdf57
https://pure.qub.ac.uk/en/publications/6fa97c48-e8e9-4039-8b9d-af4ad27419d3
https://pure.qub.ac.uk/en/publications/6fa97c48-e8e9-4039-8b9d-af4ad27419d3
Autor:
Mohamed Islam Khadir, Maria Dainotti, Kenzaburo Kawaguchi, Biagio De Simone, Tomoya Takiwaki, Nozomu Tominaga, Anjasha Gangopadhyay, Takashi Moriya
Gamma-Ray Bursts (GRBs) are very energetic cosmological transients. Long GRBs are usually associated with Type Ib/c Supernovae (SNe), and we refer to them as GRB-SNe. Since the associated SN for a given GRB is observed only at low redshift, a possibl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57d0a7d8316f14fb74d2c2a0f5ae46d1
http://arxiv.org/abs/2208.10958
http://arxiv.org/abs/2208.10958
Publikováno v:
Journal of Astrophysics and Astronomy. 43
Interacting supernovae (SNe) IIn and Ibn show narrow emission lines and have always been a mysterious and unsolved genre in SNe physics. We present a comprehensive analysis of the temporal and spectroscopic behaviour of a group of interacting SNe~IIn
Autor:
Jun Mo, T. Zhang, A. Pastorello, G. C. Anupama, D. K. Sahu, Subhash Bose, Nancy Elias-Rosa, Mridweeka Singh, Anjasha Gangopadhyay, F. Huang, Shashi B. Pandey, Junqiang Zhang, Raya Dastidar, L. Tomasella, Kuntal Misra, Giacomo Terreran, Brijesh Kumar, P. Ochner, Liming Rui, X. F. Wang, Shengyu Yan, Leonardo Tartaglia
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
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We present the photometric and spectroscopic analysis of three Type II SNe: 2014cx, 2014cy and 2015cz. SN 2014cx is a conventional Type IIP with a shallow slope (0.2 mag/50d) and an atypical short plateau ($\sim$86 d). SNe 2014cy and 2015cz show rela
Autor:
Ryo Imazawa, Mahito Sasada, Natsuko Hazama, Yasushi Fukazawa, Koji S Kawabata, Tatsuya Nakaoka, Hiroshi Akitaya, Thomas Bohn, Anjasha Gangopadhyay
We have obtained simultaneous and continuous photo-polarization observations of the blazar BL Lacertae in optical and near-infrared (NIR) bands during a historical outburst from 2020 to 2021. In total, fourteen nights of observations were performed w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29c244e8d0f4a4c534f06842fa274434
Autor:
S. B. Pandey, G. C. Anupama, D. K. Sahu, S Srivastav, Leonardo Tartaglia, Shan-Qin Wang, Avinash Singh, Kuntal Misra, Long Li, Anjasha Gangopadhyay, M. J. Singh, Nancy Elias-Rosa, L. Tomasella, Brijesh Kumar, Brajesh Kumar, Pankaj Sanwal, Raya Dastidar
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
We present the photometric and spectroscopic studies of a Type Ib SN 2015ap and a Type Ic SN 2016P. SN 2015ap is one of the bright (M$_{V}$ = $-$18.04 mag) Type Ib while SN 2016P lies at an average value among the Type Ic SNe (M$_{V}$ = $-$17.53 mag)
Autor:
L. Tomasella, Raya Dastidar, Nancy Elias-Rosa, Griffin Hosseinzadeh, Curtis McCully, Giacomo Terreran, Leonardo Tartaglia, E. Callis, Sang Chul Kim, Anjasha Gangopadhyay, Mridweeka Singh, Stefano Valenti, D. Andrew Howell, Shubham Srivastav, Enrico Cappellaro, Iair Arcavi, Kuntal Misra, Andrea Pastorello, Massimo Turatto, Stefano Benetti
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
We present the detailed optical evolution of a Type Ib SN 2015dj in NGC 7371, using data spanning up to ∼170 days after discovery. SN 2015dj shares similarity in light-curve shape with SN 2007gr and peaks at M V = -17.37 0.02 mag. Analytical modeli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb24ae1a86f63807cb8bccccb6f293e0
http://hdl.handle.net/10261/262180
http://hdl.handle.net/10261/262180