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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Dr Shubham Srivastav

Postdoctoral Research Assistant

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Hintze Centre for Astrophysical Surveys
shubham.srivastav@physics.ox.ac.uk
Denys Wilkinson Building, room Tower
  • About
  • Publications

The Fast-evolving Type Ib Supernova SN 2015dj in NGC 7371

The Astrophysical Journal American Astronomical Society 909:2 (2021) 100-100

Authors:

Mridweeka Singh, Kuntal Misra, Stefano Valenti, Griffin Hosseinzadeh, Andrea Pastorello, Shubham Srivastav, Anjasha Gangopadhyay, Raya Dastidar, Lina Tomasella, Iair Arcavi, Stefano Benetti, Emma Callis, Enrico Cappellaro, Nancy Elias-Rosa, D Andrew Howell, Sang Chul Kim, Curtis McCully, Leonardo Tartaglia, Giacomo Terreran, Massimo Turatto

Abstract:

Abstract 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 modeling of the quasi bolometric light curve yields 0.06 ± 0.01 M ⊙ of 56Ni, ejecta mass M ⊙, and kinetic energy erg. The spectral features show a fast evolution and resemble those of spherically symmetric ejecta. The analysis of nebular phase spectral lines indicates a progenitor mass between 13–20 M ⊙, suggesting a binary scenario.
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Forbidden hugs in pandemic times

Astronomy & Astrophysics EDP Sciences 647 (2021) a93

Authors:

A Pastorello, G Valerin, M Fraser, N Elias-Rosa, S Valenti, A Reguitti, PA Mazzali, RC Amaro, JE Andrews, Y Dong, J Jencson, M Lundquist, DE Reichart, DJ Sand, S Wyatt, SJ Smartt, KW Smith, S Srivastav, Y-Z Cai, E Cappellaro, S Holmbo, A Fiore, D Jones, E Kankare, E Karamehmetoglu, P Lundqvist, A Morales-Garoffolo, TM Reynolds, MD Stritzinger, SC Williams, KC Chambers, TJL de Boer, ME Huber, A Rest, R Wainscoat
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Corrigendum: “Design and operation of the ATLAS Transient Science Server” (2020, PASP, 132, 085002)

Publications of the Astronomical Society of the Pacific IOP Publishing 133:1020 (2021) 029201

Authors:

KW Smith, SJ Smartt, DR Young, JL Tonry, L Denneau, H Flewelling, AN Heinze, HJ Weiland, B Stalder, A Rest, CW Stubbs, JP Anderson, T-W Chen, P Clark, A Do, F Förster, M Fulton, J Gillanders, OR McBrien, D O’Neill, S Srivastav, DE Wright
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Forbidden hugs in pandemic times

Astronomy & Astrophysics EDP Sciences 646 (2021) a119

Authors:

A Pastorello, M Fraser, G Valerin, A Reguitti, K Itagaki, P Ochner, SC Williams, D Jones, J Munday, SJ Smartt, KW Smith, S Srivastav, N Elias-Rosa, E Kankare, E Karamehmetoglu, P Lundqvist, PA Mazzali, U Munari, MD Stritzinger, L Tomasella, JP Anderson, KC Chambers, A Rest
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SN 2019muj – a well-observed Type Iax supernova that bridges the luminosity gap of the class

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 501:1 (2020) 1078-1099

Authors:

Barnabás Barna, Tamás Szalai, Saurabh W Jha, Yssavo Camacho-Neves, Lindsey Kwok, Ryan J Foley, Charles D Kilpatrick, David A Coulter, Georgios Dimitriadis, Armin Rest, César Rojas-Bravo, Matthew R Siebert, Peter J Brown, Jamison Burke, Estefania Padilla Gonzalez, Daichi Hiramatsu, D Andrew Howell, Curtis McCully, Craig Pellegrino, Matthew Dobson, Stephen J Smartt, Jonathan J Swift, Holland Stacey, Mohammed Rahman, David J Sand, Jennifer Andrews, Samuel Wyatt, Eric Y Hsiao, Joseph P Anderson, Ting-Wan Chen, Massimo Della Valle, Lluís Galbany, Mariusz Gromadzki, Cosimo Inserra, Joe Lyman, Mark Magee, Kate Maguire, Tomás E Müller-Bravo, Matt Nicholl, Shubham Srivastav, Steven C Williams
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