102 citations · 200 across the 11 of their papers we have counts for
11 papers
The supernova Ia progenitor problem in the 2040s
Thomas Kupfer, Simone Scaringi, Ingrid Pelisoli +8
Type Ia supernovae (SNe Ia) are fundamental to cosmology and galactic chemical evolution, yet the nature of their progenitor systems remains unresolved. Multiple evolutionary pathw…
Modelling the AM CVn and Double Detonation Supernova Progenitor Binary System CD-3011223
Kunal Deshmukh, Evan B. Bauer, Thomas Kupfer +1
We present a detailed modelling study of CD-3011223 (CD-30), a hot subdwarf (sdB)-white dwarf (WD) binary identified as a double detonation supernova progenitor, using th…
Limiting the accretion disk light in two mass transferring hot subdwarf binaries
Kunal Deshmukh, Thomas Kupfer, Pasi Hakala +6
We report the results from follow-up observations of two Roche-lobe filling hot subdwarf binaries with white dwarf companions predicted to have accretion disks. ZTF J213056.71+4420…
The origin of the vanishing soft X-ray excess in the changing-look Active Galactic Nucleus Mrk 590
Ritesh Ghosh, Sibasish Laha, Kunal Deshmukh +3
We have studied the nature and origin of the soft X-ray excess detected in the interesting changing-look AGN (CLAGN) Mrk~590 using two decades of multi-wavelength observations from…
GROWTH on S190426c II: GROWTH-India Telescope search for an optical counterpart with a custom image reduction and candidate vetting pipeline
Harsh Kumar, Varun Bhalerao, G. C. Anupama +17
S190426c / GW190426_152155 was the first probable neutron star - black hole merger candidate detected by the LIGO-Virgo Collaboration. We undertook a tiled search for optical count…
India's first robotic eye for time domain astrophysics: the GROWTH-India telescope
Harsh Kumar, Varun Bhalerao, G. C. Anupama +35
We present the design and performance of the GROWTH-India telescope, a 0.7 m robotic telescope dedicated to time-domain astronomy. The telescope is equipped with a 4k back-illumina…
X-ray observation of the Roche-lobe filling white dwarf plus hot subdwarf system ZTF J213056.71+442046.5
S. Mereghetti, N. La Palombara, T. Kupfer +9
ZTF J213056.71+442046.5 is the prototype of a small class of recently discovered compact binaries composed of a white dwarf and a hot subdwarf that fills its Roche-lobe. Its orbita…
Initial Characterization of Active Transitioning Centaur, P/2019 LD2 (ATLAS), using Hubble, Spitzer, ZTF, Keck, APO and GROWTH Visible & Infrared Imaging and Spectroscopy
Bryce T. Bolin, Yanga R. Fernandez, Carey M. Lisse +43
We present visible and mid-infrared imagery and photometry of temporary Jovian co-orbital comet P/2019 LD taken with HST/WFC3, Spitzer/IRAC, the GROWTH telescope network, visib…
Characterization of Temporarily-Captured Minimoon 2020 CD by Keck Time-resolved Spectrophotometry
Bryce T. Bolin, Christoffer Fremling, Timothy R. Holt +42
We present time-resolved visible spectrophotometry of minimoon 2020 CD, the second asteroid known to become temporarily captured by the Earth-Moon system's gravitational field.…
Kilonova Luminosity Function Constraints based on Zwicky Transient Facility Searches for 13 Neutron Star Mergers
Mansi M. Kasliwal, Shreya Anand, Tomas Ahumada +100
We present a systematic search for optical counterparts to 13 gravitational wave (GW) triggers involving at least one neutron star during LIGO/Virgo's third observing run. We searc…
Characterization of the Nucleus, Morphology and Activity of Interstellar Comet 2I/Borisov by Optical and Near-Infrared GROWTH, Apache Point, IRTF, ZTF and Keck Observations
Bryce T. Bolin, Carey M. Lisse, Mansi M. Kasliwal +52
We present visible and near-infrared photometric and spectroscopic observations of interstellar object 2I/Borisov taken from 2019 September 10 to 2019 November 29 using the GROWTH,…