Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Anjasha Gangopadhyay"'
Autor:
Manisha Shrestha, K. Azalee Bostroem, David J. Sand, Griffin Hosseinzadeh, Jennifer E. Andrews, Yize Dong, Emily Hoang, Daryl Janzen, Jeniveve Pearson, Jacob E. Jencson, M. J. Lundquist, Darshana Mehta, Aravind P. Ravi, Nicolás Meza Retamal, Stefano Valenti, Peter J. Brown, Saurabh W. Jha, Colin Macrie, Brian Hsu, Joseph Farah, D. Andrew Howell, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran, Lindsey Kwok, Nathan Smith, Michaela Schwab, Aidan Martas, Ricardo R. Munoz, Gustavo E. Medina, Ting S. Li, Paula Diaz, Daichi Hiramatsu, Brad E. Tucker, J. C. Wheeler, Xiaofeng Wang, Qian Zhai, Jujia Zhang, Anjasha Gangopadhyay, Yi Yang, Claudia P. Gutiérrez
Publikováno v:
The Astrophysical Journal Letters, Vol 972, Iss 1, p L15 (2024)
We present high-cadence photometric and spectroscopic observations of supernova (SN) 2024ggi, a Type II SN with flash spectroscopy features, which exploded in the nearby galaxy NGC 3621 at ∼7 Mpc. The light-curve evolution over the first 30 hr can
Externí odkaz:
https://doaj.org/article/f290b6808d1147dfa751e93bc8675b61
Autor:
Naveen Dukiya, Anjasha Gangopadhyay, Kuntal Misra, Griffin Hosseinzadeh, K. Azalee Bostroem, Bhavya Ailawadhi, D. Andrew Howell, Stefano Valenti, Iair Arcavi, Curtis McCully, Archana Gupta
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 86 (2024)
We present long-term photometric and spectroscopic studies of circumstellar material (CSM)–ejecta interacting supernova (SN) ASASSN-14il in the galaxy PGC 3093694. The SN reaches a peak r -band magnitude of ∼−20.3 ± 0.2 mag, rivaling SN 2006tf
Externí odkaz:
https://doaj.org/article/f30a72ef14c6462e85b3cc8e6ef757fa
Autor:
Gokul P. Srinivasaragavan, Sheng Yang, Shreya Anand, Jesper Sollerman, Anna Y. Q. Ho, Alessandra Corsi, S. Bradley Cenko, Daniel Perley, Steve Schulze, Marquice Sanchez-Fleming, Jack Pope, Nikhil Sarin, Conor Omand, Kaustav K. Das, Christoffer Fremling, Igor Andreoni, Rachel Bruch, Kevin B. Burdge, Kishalay De, Avishay Gal-Yam, Anjasha Gangopadhyay, Matthew J. Graham, Jacob E. Jencson, Viraj Karambelkar, Mansi M. Kasliwal, S. R. Kulkarni, Julia Martikainen, Yashvi S. Sharma, Anastasios Tzanidakis, Lin Yan, Yuhan Yao, Eric C. Bellm, Steven L. Groom, Frank J. Masci, Guy Nir, Josiah Purdum, Roger Smith, Niharika Sravan
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 71 (2024)
We study a magnitude-limited sample of 36 broad-lined type Ic supernovae (SNe Ic-BL) from the Zwicky Transient Facility Bright Transient Survey (detected between 2018 March and 2021 August), which is the largest systematic study of SNe Ic-BL done in
Externí odkaz:
https://doaj.org/article/b2150fbc4928456c87fc51fed73ba9ff
Autor:
Avinash Singh, Rishabh Singh Teja, Takashi J. Moriya, Keiichi Maeda, Koji S Kawabata, Masaomi Tanaka, Ryo Imazawa, Tatsuya Nakaoka, Anjasha Gangopadhyay, Masayuki Yamanaka, Vishwajeet Swain, D. K. Sahu, G. C. Anupama, Brajesh Kumar, Ramya M. Anche, Yasuo Sano, A. Raj, V. K. Agnihotri, Varun Bhalerao, D. Bisht, M. S. Bisht, K. Belwal, S. K. Chakrabarti, Mitsugu Fujii, Takahiro Nagayama, Katsura Matsumoto, Taisei Hamada, Miho Kawabata, Amit Kumar, Ravi Kumar, Brian K. Malkan, Paul Smith, Yuta Sakagami, Kenta Taguchi, Nozomu Tominaga, Arata Watanabe
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 132 (2024)
We present a detailed investigation of photometric, spectroscopic, and polarimetric observations of the Type II SN 2023ixf. Earlier studies have provided compelling evidence for a delayed shock breakout from a confined dense circumstellar matter (CSM
Externí odkaz:
https://doaj.org/article/1d1aaeee19fd481f8123537eeef70a37
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::009de1f86579e278bc67397dfea9f59c
https://doi.org/10.1007/s12036-022-09839-2
https://doi.org/10.1007/s12036-022-09839-2