activity
20142024
most citedA new class of flares from accreting supermassive black holes

108 citations · 1k across the 28 of their papers we have counts for

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14 papers · 1 filter

astro-ph.HE2024

Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II

N. Morrell, M. M. Phillips, G. Folatelli +57

We present the second and final release of optical spectroscopy of Type Ia Supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I…

astro-ph.HE2023★ 11 cited

Type Ia Supernova Progenitor Properties and Their Host Galaxies

Sudeshna Chakraborty, Benjamin Sadler, Peter Hoeflich +16

We present an eigenfunction method to analyze 161 visual light curves (LCs) of Type Ia supernovae (SNe Ia) obtained by the Carnegie Supernova Project to characterize their diversit…

astro-ph.HE2022★ 15 cited

Carnegie Supernova Project-II: Near-infrared spectral diversity and template of Type Ia Supernovae

Jing Lu, Eric Y. Hsiao, Mark M. Phillips +30

We present the largest and most homogeneous collection of near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia): 339 spectra of 98 individual SNe obtained as part of the Carne…

astro-ph.HE2022★ 9 cited

Near-infrared and Optical Nebular-phase Spectra of Type Ia Supernovae SN 2013aa and SN 2017cbv in NGC 5643

Sahana Kumar, Eric Y. Hsiao, Chris Ashall +23

We present multi-wavelength time-series spectroscopy of SN 2013aa and SN 2017cbv, two Type Ia supernovae (SNe Ia) on the outskirts of the same host galaxy, NGC 5643. This work util…

astro-ph.HE2022★ 16 cited

Nebular-Phase Spectra of Type Ia Supernovae from the Las Cumbres Observatory Global Supernova Project

M. L. Graham, T. D. Kennedy, S. Kumar +17

The observed diversity in Type Ia supernovae (SNe Ia) -- the thermonuclear explosions of carbon-oxygen white dwarf stars used as cosmological standard candles -- is currently met w…

astro-ph.HE2021★ 50 cited

Carnegie Supernova Project-II: Near-infrared Spectroscopy of Stripped-Envelope Core-Collapse Supernovae

M. Shahbandeh, E. Y. Hsiao, C. Ashall +29

We present 75 near-infrared (NIR; 0.82.5 m) spectra of 34 stripped-envelope core-collapse supernovae (SESNe) obtained by the Carnegie Supernova Project-II (CSP-II), encompass…

astro-ph.HE2021★ 28 cited

ASASSN-15hy: an under-luminous, red 03fg-like type Ia supernova

J. Lu, C. Ashall, E. Y. Hsiao +33

We present photometric and spectroscopic observations of the 03fg-like type Ia supernova (SN Ia) ASASSN-15hy from the ultraviolet (UV) to the near-infrared (NIR). ASASSN-15hy share…

astro-ph.HE2020★ 15 cited

Strong Near-Infrared Carbon Absorption in the Transitional Type Ia SN 2015bp

S. D. Wyatt, D. J. Sand, E. Y. Hsiao +20

Unburned carbon is potentially a powerful probe of Type Ia supernova (SN) explosion mechanisms. We present comprehensive optical and near-infrared (NIR) data on the "transitional"…

astro-ph.HE2020★ 19 cited

Optical and Near-Infrared Observations of the Nearby Type Ia Supernova 2017cbv

Lingzhi Wang, Carlos Contreras, Maokai Hu +28

Supernova (SN) 2017cbv in NGC 5643 is one of a handful of type Ia supernovae (SNe~Ia) reported to have excess blue emission at early times. This paper presents extensive $BVRIYJHK_…

astro-ph.HE2019★ 23 cited

LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures

Peter Clark, Kate Maguire, Cosimo Inserra +30

This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.80.9 d to reach a…

astro-ph.HE2019★ 34 cited

Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae

S. Davis, E. Y. Hsiao, C. Ashall +24

We present near-infrared (NIR) spectra of Type II supernovae (SNe II) from the Carnegie Supernova Project-II (CSP-II), the largest such dataset published to date. We iden…

astro-ph.HE2018★ 91 cited

Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to

M. M. Phillips, Carlos Contreras, E. Y. Hsiao +41

The Carnegie Supernova Project-II (CSP-II) was an NSF-funded, four-year program to obtain optical and near-infrared observations of a "Cosmology" sample of Type Ia supern…

astro-ph.HE2018★ 12 cited

Thermonuclear Supernovae: Prospecting in the Age of Time-Domain and Multi-Wavelength Astronomy

Peter Hoeflich, Chris Ashall, Alec Fisher +6

We show how new and upcoming advances in the age of time-domain and multi-wavelength astronomy will open up a new venue to probe the diversity of SN~Ia. We discuss this in the cont…

astro-ph.HE2018★ 35 cited

Near-infrared spectral evolution of the Type Ia supernova 2014J in the nebular phase: implications for the progenitor system

T. R. Diamond, P. Hoeflich, E. Y. Hsiao +11

As the closest Type Ia supernova in decades, SN 2014J provides a unique opportunity for detailed investigation into observational signatures of the progenitor system and explosion…