Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Yashvi Sharma"'
Autor:
Yuhan Yao, Muryel Guolo, Francesco Tombesi, Ruancun Li, Suvi Gezari, Javier A. García, Lixin Dai, Ryan Chornock, Wenbin Lu, S. R. Kulkarni, Keith C. Gendreau, Dheeraj R. Pasham, S. Bradley Cenko, Erin Kara, Raffaella Margutti, Yukta Ajay, Thomas Wevers, Tom M. Kwan, Igor Andreoni, Joshua S. Bloom, Andrew J. Drake, Matthew J. Graham, Erica Hammerstein, Russ R. Laher, Natalie LeBaron, Ashish A. Mahabal, Brendan O’Connor, Josiah Purdum, Vikram Ravi, Huei Sears, Yashvi Sharma, Roger Smith, Jesper Sollerman, Jean J. Somalwar, Avery Wold
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 1, p 34 (2024)
We present the tidal disruption event (TDE) AT2022lri, hosted in a nearby (≈144 Mpc) quiescent galaxy with a low-mass massive black hole (10 ^4 M _⊙ < M _BH < 10 ^6 M _⊙ ). AT2022lri belongs to the TDE-H+He subtype. More than 1 Ms of X-ray data
Externí odkaz:
https://doaj.org/article/bd742daf9544494ca0743fcb223f9075
Autor:
Kaustav K. Das, Mansi M. Kasliwal, Jesper Sollerman, Christoffer Fremling, I. Irani, Shing-Chi Leung, Sheng Yang, Samantha Wu, Jim Fuller, Shreya Anand, Igor Andreoni, C. Barbarino, Thomas G. Brink, Kishalay De, Alison Dugas, Steven L. Groom, George Helou, K-Ryan Hinds, Anna Y. Q. Ho, Viraj Karambelkar, S. R. Kulkarni, Daniel A. Perley, Josiah Purdum, Nicolas Regnault, Steve Schulze, Yashvi Sharma, Tawny Sit, Niharika Sravan, Gokul P. Srinivasaragavan, Robert Stein, Kirsty Taggart, Leonardo Tartaglia, Anastasios Tzanidakis, Avery Wold, Lin Yan, Yuhan Yao, Jeffry Zolkower
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 91 (2024)
Eruptive mass loss of massive stars prior to supernova (SN) explosion is key to understanding their evolution and end fate. An observational signature of pre-SN mass loss is the detection of an early, short-lived peak prior to the radioactive-powered
Externí odkaz:
https://doaj.org/article/2c8363d3abf94969aa2e493b463a3267
Autor:
Yashvi Sharma, Jesper Sollerman, Shrinivas R. Kulkarni, Takashi J. Moriya, Steve Schulze, Stan Barmentloo, Michael Fausnaugh, Avishay Gal-Yam, Anders Jerkstrand, Tomás Ahumada, Eric C. Bellm, Kaustav K. Das, Andrew Drake, Christoffer Fremling, David Hale, Saarah Hall, K. R. Hinds, Theophile Jegou du Laz, Viraj Karambelkar, Mansi M. Kasliwal, Frank J. Masci, Adam A. Miller, Guy Nir, Daniel A. Perley, Josiah N. Purdum, Yu-Jing Qin, Nabeel Rehemtulla, R. Michael Rich, Reed L. Riddle, Antonio C. Rodriguez, Sam Rose, Jean Somalwar, Jacob L. Wise, Avery Wold, Lin Yan, Yuhan Yao
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 2, p 199 (2024)
Multipeaked supernovae with precursors, dramatic light-curve rebrightenings, and spectral transformation are rare, but are being discovered in increasing numbers by modern night-sky transient surveys like the Zwicky Transient Facility. Here, we prese
Externí odkaz:
https://doaj.org/article/f7276a25b8c0403e8610026a5c48e899
Autor:
Ido Irani, Ping Chen, Jonathan Morag, Steve Schulze, Avishay Gal-Yam, Nora L. Strotjohann, Ofer Yaron, Erez A. Zimmerman, Amir Sharon, Daniel A. Perley, J. Sollerman, Aaron Tohuvavohu, Kaustav K. Das, Mansi M. Kasliwal, Rachel Bruch, Thomas G. Brink, WeiKang Zheng, Alexei V. Filippenko, Kishore C. Patra, Sergiy S. Vasylyev, Yi Yang, Matthew J. Graham, Joshua S. Bloom, Paolo Mazzali, Josiah Purdum, Russ R. Laher, Avery Wold, Yashvi Sharma, Leander Lacroix, Michael S. Medford
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 109 (2024)
We present the discovery and analysis of SN 2022oqm, a Type Ic supernova (SN) detected
Externí odkaz:
https://doaj.org/article/978908318b134bd385b132b0203431a5
Autor:
Shreya Anand, Jennifer Barnes, Sheng Yang, Mansi M. Kasliwal, Michael W. Coughlin, Jesper Sollerman, Kishalay De, Christoffer Fremling, Alessandra Corsi, Anna Y. Q. Ho, Arvind Balasubramanian, Conor Omand, Gokul P. Srinivasaragavan, S. Bradley Cenko, Tomás Ahumada, Igor Andreoni, Aishwarya Dahiwale, Kaustav Kashyap Das, Jacob Jencson, Viraj Karambelkar, Harsh Kumar, Brian D. Metzger, Daniel Perley, Nikhil Sarin, Tassilo Schweyer, Steve Schulze, Yashvi Sharma, Tawny Sit, Robert Stein, Leonardo Tartaglia, Samaporn Tinyanont, Anastasios Tzanidakis, Jan van Roestel, Yuhan Yao, Joshua S. Bloom, David O. Cook, Richard Dekany, Matthew J. Graham, Steven L. Groom, David L. Kaplan, Frank J. Masci, Michael S. Medford, Reed Riddle, Chaoran Zhang
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 68 (2024)
One of the open questions following the discovery of GW170817 is whether neutron star (NS) mergers are the only astrophysical sites capable of producing r -process elements. Simulations have shown that 0.01–0.1 M _⊙ of r -process material could b
Externí odkaz:
https://doaj.org/article/91e5606dbd4e49a28f73c1a0b247bc94
Autor:
Yuhan Yao, Vikram Ravi, Suvi Gezari, Sjoert van Velzen, Wenbin Lu, Steve Schulze, Jean J. Somalwar, S. R. Kulkarni, Erica Hammerstein, Matt Nicholl, Matthew J. Graham, Daniel A. Perley, S. Bradley Cenko, Robert Stein, Angelo Ricarte, Urmila Chadayammuri, Eliot Quataert, Eric C. Bellm, Joshua S. Bloom, Richard Dekany, Andrew J. Drake, Steven L. Groom, Ashish A. Mahabal, Thomas A. Prince, Reed Riddle, Ben Rusholme, Yashvi Sharma, Jesper Sollerman, Lin Yan
Publikováno v:
The Astrophysical Journal Letters, Vol 955, Iss 1, p L6 (2023)
We conduct a systematic tidal disruption event (TDE) demographics analysis using the largest sample of optically selected TDEs. A flux-limited, spectroscopically complete sample of 33 TDEs is constructed using the Zwicky Transient Facility over 3 yr
Externí odkaz:
https://doaj.org/article/edf211daf8984e0991adc8dd16ff8361
Autor:
Tawny Sit, Mansi M. Kasliwal, Anastasios Tzanidakis, Kishalay De, Christoffer Fremling, Jesper Sollerman, Avishay Gal-Yam, Adam A. Miller, Scott Adams, Robert Aloisi, Igor Andreoni, Matthew Chu, David Cook, Kaustav Kashyap Das, Alison Dugas, Steven L. Groom, Anna Y. Q. Ho, Viraj Karambelkar, James D. Neill, Frank J. Masci, Michael S. Medford, Josiah Purdum, Yashvi Sharma, Roger Smith, Robert Stein, Lin Yan, Yuhan Yao, Chaoran Zhang
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 2, p 142 (2023)
SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak. The Zwicky Transient
Externí odkaz:
https://doaj.org/article/c621500c7d0c4c19aca6940f97d5b1c9
Autor:
Kaustav K. Das, Mansi M. Kasliwal, Christoffer Fremling, Sheng Yang, Steve Schulze, Jesper Sollerman, Tawny Sit, Kishalay De, Anastasios Tzanidakis, Daniel A. Perley, Shreya Anand, Igor Andreoni, C. Barbarino, K. Brudge, Andrew Drake, Avishay Gal-Yam, Russ R. Laher, Viraj Karambelkar, S. R. Kulkarni, Frank J. Masci, Michael S. Medford, Abigail Polin, Harrison Reedy, Reed Riddle, Yashvi Sharma, Roger Smith, Lin Yan, Yi Yang, Yuhan Yao
Publikováno v:
The Astrophysical Journal, Vol 959, Iss 1, p 12 (2023)
The fate of stars in the zero-age main-sequence (ZAMS) range ≈8–12 M _⊙ is unclear. They could evolve to form white dwarfs or explode as electron-capture supernovae (SNe) or iron core-collapse SNe (CCSNe). Even though the initial mass function
Externí odkaz:
https://doaj.org/article/8e46ebcfed134cc3a334fc4fc5e6b6bc
Autor:
Anna Y. Q. Ho, Daniel A. Perley, Avishay Gal-Yam, Ragnhild Lunnan, Jesper Sollerman, Steve Schulze, Kaustav K. Das, Dougal Dobie, Yuhan Yao, Christoffer Fremling, Scott Adams, Shreya Anand, Igor Andreoni, Eric C. Bellm, Rachel J. Bruch, Kevin B. Burdge, Alberto J. Castro-Tirado, Aishwarya Dahiwale, Kishalay De, Richard Dekany, Andrew J. Drake, Dmitry A. Duev, Matthew J. Graham, George Helou, David L. Kaplan, Viraj Karambelkar, Mansi M. Kasliwal, Erik C. Kool, S. R. Kulkarni, Ashish A. Mahabal, Michael S. Medford, A. A. Miller, Jakob Nordin, Eran Ofek, Glen Petitpas, Reed Riddle, Yashvi Sharma, Roger Smith, Adam J. Stewart, Kirsty Taggart, Leonardo Tartaglia, Anastasios Tzanidakis, Jan Martin Winters
Publikováno v:
The Astrophysical Journal, Vol 949, Iss 2, p 120 (2023)
We present a search for extragalactic fast blue optical transients (FBOTs) during Phase I of the Zwicky Transient Facility (ZTF). We identify 38 candidates with durations above half-maximum light 1 day < t _1/2 < 12 days, of which 28 have blue ( g
Externí odkaz:
https://doaj.org/article/efbeb0f6bde94d9fb733f9fbde8be4f5
Autor:
Viraj R. Karambelkar, Mansi M. Kasliwal, Nadejda Blagorodnova, Jesper Sollerman, Robert Aloisi, Shreya G. Anand, Igor Andreoni, Thomas G. Brink, Rachel Bruch, David Cook, Kaustav Kashyap Das, Kishalay De, Andrew Drake, Alexei V. Filippenko, Christoffer Fremling, George Helou, Anna Ho, Jacob Jencson, David Jones, Russ R. Laher, Frank J. Masci, Kishore C. Patra, Josiah Purdum, Alexander Reedy, Tawny Sit, Yashvi Sharma, Anastasios Tzanidakis, Stéfan J. van der Walt, Yuhan Yao, Chaoran Zhang
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 137 (2023)
Luminous red novae (LRNe) are transients characterized by low luminosities and expansion velocities, and they are associated with mergers or common-envelope ejections in stellar binaries. Intermediate-luminosity red transients (ILRTs) are an observat
Externí odkaz:
https://doaj.org/article/58b232a0a6e04fac96ce4037448ccf5d