Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Shubham Srivastav"'
Autor:
Yize Dong, Stefano Valenti, Chris Ashall, Marc Williamson, David J. Sand, Schuyler D. Van Dyk, Alexei V. Filippenko, Saurabh W. Jha, Michael Lundquist, Maryam Modjaz, Jennifer E. Andrews, Jacob E. Jencson, Griffin Hosseinzadeh, Jeniveve Pearson, Lindsey A. Kwok, Teresa Boland, Eric Y. Hsiao, Nathan Smith, Nancy Elias-Rosa, Shubham Srivastav, Stephen Smartt, Michael Fulton, WeiKang Zheng, Thomas G. Brink, Melissa Shahbandeh, K. Azalee Bostroem, Emily Hoang, Daryl Janzen, Darshana Mehta, Nicolas Meza, Manisha Shrestha, Samuel Wyatt, Katie Auchettl, Christopher R. Burns, Joseph Farah, Lluís Galbany, Estefania Padilla Gonzalez, Joshua Haislip, Jason T. Hinkle, D. Andrew Howell, Thomas De Jaeger, Vladimir Kouprianov, Sahana Kumar, Jing Lu, Curtis McCully, Shane Moran, Nidia Morrell, Megan Newsome, Craig Pellegrino, Abigail Polin, Daniel E. Reichart, B. J. Shappee, Maximilian D. Stritzinger, Giacomo Terreran, M. A. Tucker
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 316 (2024)
We present optical and near-infrared (NIR) observations of SN 2022crv, a stripped-envelope supernova in NGC 3054, discovered within 12 hr of explosion by the Distance Less Than 40 Mpc Survey. We suggest that SN 2022crv is a transitional object on the
Externí odkaz:
https://doaj.org/article/e5e907cd48684455af1847402b5be629
Autor:
Zeyi Zhao, Jujia Zhang, Liping Li, Qian Zhai, Yongzhi Cai, Shubham Srivastav, Xiaofeng Wang, Han Lin, Yi Yang, Alexei V. Filippenko, Thomas G. Brink, WeiKang Zheng
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 2, p 155 (2024)
We present extensive observations and analysis of supernova (SN) SN 2021dbg, utilizing optical photometry and spectroscopy. For approximately 385 days following the explosion, SN 2021dbg exhibited remarkable luminosity, surpassing most Type II SNe (S
Externí odkaz:
https://doaj.org/article/0dcf24b8c826457b8d1db2627b2a8a81
Autor:
Judhajeet Basu, M. Pavana, G. C. Anupama, Sudhanshu Barway, Kulinder Pal Singh, Vishwajeet Swain, Shubham Srivastav, Harsh Kumar, Varun Bhalerao, L. S. Sonith, G. Selvakumar
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 44 (2024)
We report the optical, UV, and soft X-ray observations of the 2017–2022 eruptions of the recurrent nova M31N 2008-12a. We find a cusp feature in the $r^{\prime} $ - and $i^{\prime} $ -band light curves close to the peak, which could be related to j
Externí odkaz:
https://doaj.org/article/b2e60c0f57c54f69ac41cf645cc49d97
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:
Shubham Srivastav, T. Moore, M. Nicholl, M. R. Magee, S. J. Smartt, M. D. Fulton, S. A. Sim, J. M. Pollin, L. Galbany, C. Inserra, A. Kozyreva, Takashi J. Moriya, F. P. Callan, X. Sheng, K. W. Smith, J. S. Sommer, J. P. Anderson, M. Deckers, M. Gromadzki, T. E. Müller-Bravo, G. Pignata, A. Rest, D. R. Young
Publikováno v:
The Astrophysical Journal Letters, Vol 956, Iss 2, p L34 (2023)
We present optical photometric and spectroscopic observations of the 02es-like type Ia supernova (SN) 2022ywc. The transient occurred in the outskirts of an elliptical host galaxy and showed a striking double-peaked light curve with an early excess f
Externí odkaz:
https://doaj.org/article/fc0161952c554de3a5563511b4151686
Autor:
Shubham Srivastav, S. J. Smartt, M. E. Huber, G. Dimitriadis, K. C. Chambers, Michael D. Fulton, Thomas Moore, F. P. Callan, James H. Gillanders, K. Maguire, M. Nicholl, Luke J. Shingles, S. A. Sim, K. W. Smith, J. P. Anderson, Thomas de Boer, Ting-Wan Chen, Hua Gao, D. R. Young
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L20 (2023)
We present observations and analysis of the hostless and luminous Type Ia supernova 2022ilv, illustrating it is part of the 2003fg-like family, often referred to as super-Chandrasekhar (Ia-SC) explosions. The Asteroid Terrestrial-impact Last Alert Sy
Externí odkaz:
https://doaj.org/article/18da7743d8ad44b0b35a2b654d79dae0
Autor:
Qinan Wang, Patrick Armstrong, Yossef Zenati, Ryan Ridden-Harper, Armin Rest, Iair Arcavi, Charles D. Kilpatrick, Ryan J. Foley, Brad E. Tucker, Chris Lidman, Thomas L. Killestein, Melissa Shahbandeh, Joseph P Anderson, Rodrigo Angulo, Chris Ashall, Jamison Burke, Ting-Wan Chen, Sophie von Coelln, Kyle A. Dalrymple, Kyle W. Davis, Michael D. Fulton, Lluís Galbany, Estefania Padilla Gonzalez, Bore Gao, Mariusz Gromadzki, D. Andrew Howell, Nada Ihanec, Jacob E. Jencson, David O. Jones, Joseph D. Lyman, Curtis McCully, Tomás E. Müller-Bravo, Megan Newsome, Matt Nicholl, David O’Neill, Craig Pellegrino, Sofia Rest, Stephen J. Smartt, Ken Smith, Shubham Srivastav, Giacomo Terreran, Samaporn Tinyanont, David R. Young, Alfredo Zenteno
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L15 (2023)
We present early observations and analysis of the double-peaked Type IIb supernova (SN IIb) SN 2021zby. TESS captured the prominent early shock-cooling peak of SN 2021zby within the first ∼10 days after explosion with a 30 minute cadence. We presen
Externí odkaz:
https://doaj.org/article/6fd6385bbb434faa85be67884ac6df57
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:
Shubham Srivastav, Deepak Kumar
Publikováno v:
International Journal for Research in Applied Science and Engineering Technology. 11:4701-4704
The principle objective of this project is to analyse and design a multi-storied building {G + 2(3-dimensional frame)} using STAAD Pro. The design involves load calculations manually and analysing the whole structure by STAAD Pro. The design methods
Autor:
Georgios Dimitriadis, Kate Maguire, Viraj R Karambelkar, Ryan J Lebron, Chang Liu (刘 畅), Alexandra Kozyreva, Adam A Miller, Ryan Ridden-Harper, Joseph P Anderson, Ting-Wan Chen, Michael Coughlin, Massimo Della Valle, Andrew Drake, Lluís Galbany, Mariusz Gromadzki, Steven L Groom, Claudia P Gutiérrez, Nada Ihanec, Cosimo Inserra, Joel Johansson, Tomás E Müller-Bravo, Matt Nicholl, Abigail Polin, Ben Rusholme, Steve Schulze, Jesper Sollerman, Shubham Srivastav, Kirsty Taggart, Qinan Wang, Yi Yang (杨 轶), David R Young
Publikováno v:
Dimitriadis, G, Maguire, K, Karambelkar, V R, Lebron, R J, Liu (刘 畅), C, Kozyreva, A, Miller, A A, Ridden-Harper, R, Anderson, J P, Chen, T-W, Coughlin, M, Valle, M D, Drake, A, Galbany, L, Gromadzki, M, Groom, S L, Gutiérrez, C P, Ihanec, N, Inserra, C, Johansson, J, Müller-Bravo, T E, Nicholl, M, Polin, A, Rusholme, B, Schulze, S, Sollerman, J, Srivastav, S, Taggart, K, Wang, Q, Yang (杨 轶), Y & Young, D R 2023, ' SN 2021zny: an early flux excess combined with late-time oxygen emission suggests a double white dwarf merger event ', Monthly Notices of the Royal Astronomical Society, vol. 521, no. 1, pp. 1162-1183 . https://doi.org/10.1093/mnras/stad536
We present a photometric and spectroscopic analysis of the ultra-luminous and slowly evolving 03fg-like Type Ia SN 2021zny. Our observational campaign starts from $\sim5.3$ hours after explosion (making SN 2021zny one of the earliest observed members
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b017b7ca9ccaa0e6872fe7315a8d6ec4
https://resolver.caltech.edu/CaltechAUTHORS:20230613-731854300.61
https://resolver.caltech.edu/CaltechAUTHORS:20230613-731854300.61