Dr Shubham Srivastav: Publications

GW190425: Pan-STARRS and ATLAS coverage of the skymap and limits on optical emission associated with FRB190425

(2023)

Authors:

SJ Smartt, M Nicholl, S Srivastav, ME Huber, KC Chambers, KW Smith, DR Young, MD Fulton, JL Tonry, CW Stubbs, L Denneau, AJ Cooper, A Aamer, JP Anderson, A Andersson, J Bulger, T-W Chen, P Clark, T de Boer, H Gao, JH Gillanders, A Lawrence, CC Lin, TB Lowe, EA Magnier, P Minguez, T Moore, A Rest, L Shingles, R Siverd, IA Smith, B Stalder, HF Stevance, R Wainscoat, R Williams

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Characterizing the Rapid Hydrogen Disappearance in SN2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties

(2023)

Authors:

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, L 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, BJ Shappee, Maximilian D Stritzinger, Giacomo Terreran, MA Tucker

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AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies

The Astrophysical Journal Letters American Astronomical Society 954:1 (2023) l28

Authors:

M Nicholl, S Srivastav, MD Fulton, S Gomez, ME Huber, SR Oates, P Ramsden, L Rhodes, SJ Smartt, KW Smith, A Aamer, JP Anderson, FE Bauer, E Berger, T de Boer, KC Chambers, P Charalampopoulos, T-W Chen, RP Fender, M Fraser, H Gao, DA Green, L Galbany, BP Gompertz, M Gromadzki, CP Gutiérrez, DA Howell, C Inserra, PG Jonker, M Kopsacheili, TB Lowe, EA Magnier, C McCully, SL McGee, T Moore, TE Müller-Bravo, M Newsome, E Padilla Gonzalez, C Pellegrino, T Pessi, M Pursiainen, A Rest, EJ Ridley, BJ Shappee, X Sheng, GP Smith, G Terreran, MA Tucker, J Vinkó, RJ Wainscoat, P Wiseman, DR Young

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Unprecedented early flux excess in the hybrid 02es-like type Ia supernova 2022ywc indicates interaction with circumstellar material

(2023)

Authors:

Shubham Srivastav, T Moore, M Nicholl, MR Magee, SJ Smartt, MD Fulton, SA Sim, JM Pollin, L Galbany, C Inserra, A Kozyreva, Takashi J Moriya, FP Callan, X Sheng, KW Smith, JS Sommer, JP Anderson, M Deckers, M Gromadzki, TE Müller-Bravo, G Pignata, A Rest, DR Young

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Observational Properties of a Bright Type lax SN 2018cni and a Faint Type Iax SN 2020kyg

The Astrophysical Journal American Astronomical Society 953:1 (2023) 93-93

Authors:

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, GC 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

Abstract:

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 a faint one. We derive 56Ni mass of 0.07 and 0.002 M ⊙ and ejecta mass of 0.48 and 0.14 M ⊙ for SNe 2018cni and 2020kyg, respectively. A combined study of the bright and faint Type Iax SNe in R/r-band reveals that the brighter objects tend to have a longer rise time. However, the correlation between the peak luminosity and decline rate shows that bright and faint Type Iax SNe exhibit distinct behavior. Comparison with standard deflagration models suggests that SN 2018cni is consistent with the deflagration of a CO white dwarf, whereas the properties of SN 2020kyg can be better explained by the deflagration of a hybrid CONe white dwarf. The spectral features of both the SNe point to the presence of similar chemical species but with different mass fractions. Our spectral modeling indicates stratification at the outer layers and mixed inner ejecta for both of the SNe

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Dr Shubham Srivastav

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GW190425: Pan-STARRS and ATLAS coverage of the skymap and limits on optical emission associated with FRB190425

Authors:

Characterizing the Rapid Hydrogen Disappearance in SN2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties

Authors:

AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies

Authors:

Unprecedented early flux excess in the hybrid 02es-like type Ia supernova 2022ywc indicates interaction with circumstellar material

Authors:

Observational Properties of a Bright Type lax SN 2018cni and a Faint Type Iax SN 2020kyg

Authors:

Abstract:

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Dr Shubham Srivastav

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GW190425: Pan-STARRS and ATLAS coverage of the skymap and limits on optical emission associated with FRB190425

Authors:

Characterizing the Rapid Hydrogen Disappearance in SN2022crv: Evidence of a Continuum between Type Ib and IIb Supernova Properties

Authors:

AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies

Authors:

Unprecedented early flux excess in the hybrid 02es-like type Ia supernova 2022ywc indicates interaction with circumstellar material

Authors:

Observational Properties of a Bright Type lax SN 2018cni and a Faint Type Iax SN 2020kyg

Authors:

Abstract: