Dr Shubham Srivastav: Publications

PS15cey and PS17cke: prospective candidates from the Pan-STARRS Search for kilonovae

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 500:3 (2020) 4213-4228

Authors:

OR McBrien, SJ Smartt, ME Huber, A Rest, KC Chambers, C Barbieri, M Bulla, S Jha, M Gromadzki, S Srivastav, KW Smith, DR Young, S McLaughlin, C Inserra, M Nicholl, M Fraser, K Maguire, T-W Chen, T Wevers, JP Anderson, TE Müller-Bravo, F Olivares E., E Kankare, A Gal-Yam, C Waters

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Luminous Red Nova AT 2019zhd, a new merger in M 31

(2020)

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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The luminous red nova variety: AT 2020hat and AT 2020kog

(2020)

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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SN 2019muj -- a well-observed Type Iax supernova that bridges the luminosity gap of the class

(2020)

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, Cesar 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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Optical studies of two stripped-envelope supernovae – SN 2015ap (Type Ib) and SN 2016P (Type Ic)

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 497:3 (2020) 3770-3789

Authors:

Anjasha Gangopadhyay, Kuntal Misra, DK Sahu, Shan-Qin Wang, Brajesh Kumar, Long Li, GC Anupama, Raya Dastidar, N Elias-Rosa, Brijesh Kumar, Mridweeka Singh, SB Pandey, Pankaj Sanwal, Avinash Singh, S Srivastav, L Tartaglia, L Tomasella

Abstract:

ABSTRACT 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 (MV = −18.04 mag) Type Ib while SN 2016P lies at an average value among the Type Ic SNe (MV = −17.53 mag). Bolometric light-curve modelling of SNe 2015ap and 2016P indicates that both the SNe are powered by 56Ni + magnetar model with 56Ni masses of 0.01 and 0.002 M⊙, ejecta masses of 3.75 and 4.66 M⊙, spin period P0 of 25.8 and 36.5 ms, and magnetic field Bp of 28.39 × 1014 and 35.3 × 1014 G, respectively. The early spectra of SN 2015ap show prominent lines of He with a ‘W’ feature due to Fe complexes while other lines of Mg ii, Na i, and Si ii are present in both SNe 2015ap and 2016P. Nebular phase [O i] profile indicates an asymmetric profile in SN 2015ap. The [O i]/[Ca ii] ratio and nebular spectral modelling of SN 2015ap hint towards a progenitor mass between 12 and 20 M⊙.

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Dr Shubham Srivastav

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PS15cey and PS17cke: prospective candidates from the Pan-STARRS Search for kilonovae

Authors:

Luminous Red Nova AT 2019zhd, a new merger in M 31

Authors:

The luminous red nova variety: AT 2020hat and AT 2020kog

Authors:

SN 2019muj -- a well-observed Type Iax supernova that bridges the luminosity gap of the class

Authors:

Optical studies of two stripped-envelope supernovae – SN 2015ap (Type Ib) and SN 2016P (Type Ic)

Authors:

Abstract:

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Dr Shubham Srivastav

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PS15cey and PS17cke: prospective candidates from the Pan-STARRS Search for kilonovae

Authors:

Luminous Red Nova AT 2019zhd, a new merger in M 31

Authors:

The luminous red nova variety: AT 2020hat and AT 2020kog

Authors:

SN 2019muj -- a well-observed Type Iax supernova that bridges the luminosity gap of the class

Authors:

Optical studies of two stripped-envelope supernovae – SN 2015ap (Type Ib) and SN 2016P (Type Ic)

Authors:

Abstract: