output
19932026
Showing 2020 · astro-ph.HEShow all

18 papers · 2 filters

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★ 71 cited

Luminous Type II Short-Plateau Supernovae 2006Y, 2006ai, and 2016egz: A Transitional Class from Stripped Massive Red Supergiants

Daichi Hiramatsu, D. Andrew Howell, Takashi J. Moriya +21

The diversity of Type II supernovae (SNe II) is thought to be driven mainly by differences in their progenitor's hydrogen-rich (H-rich) envelope mass, with SNe IIP having long plat…

astro-ph.HE2020★ 19 cited

A precise mass measurement of PSR J2045+3633

J. W. McKee, P. C. C. Freire, M. Berezina +10

We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045+3633. Using regular high-cadence observa…

astro-ph.HE2020★ 42 cited

A revisit of PSR J19093744 with 15-year high-precision timing

K. Liu, L. Guillemot, A. G. Istrate +10

We report on a high-precision timing analysis and an astrophysical study of the binary millisecond pulsar, PSR J19093744, motivated by the accumulation of data with well improve…

astro-ph.HE2020★ 4 cited

A General Overview for Localizing Short Gamma-ray Bursts with a CubeSat Mega-Constellation

Fadil Inceoglu, Nestor J. Hernandez Marcano, Rune H. Jacobsen +1

The Gamma-Ray Burst Monitor (GBM) on the {\it Fermi Gamma-Ray Space Telescope}, for the first time, detected a short gamma ray burst (SGRB) signal that accompanies a gravitational…

astro-ph.HE2020★ 168 cited

A large fraction of hydrogen-rich supernova progenitors experience elevated mass loss shortly prior to explosion

Rachel J. Bruch, Avishay Gal-Yam, Steve Schulze +43

Spectroscopic detection of narrow emission lines traces the presence of circumstellar mass distributions around massive stars exploding as core-collapse supernovae. Transient emiss…

astro-ph.HE2020★ 32 cited

Carnegie Supernova Project: Classification of Type Ia Supernovae

Anthony Burrow, E. Baron, Chris Ashall +14

We use the spectroscopy and homogeneous photometry of 97 Type Ia supernovae obtained by the \emph{Carnegie Supernova Project} as well as a subset of 36 Type Ia supernovae presented…

astro-ph.HE2020

Carnegie Supernova Project II: The slowest rising Type Ia supernova LSQ14fmg and clues to the origin of super-Chandrasekhar/03fg-like events

E. Y. Hsiao, P. Hoeflich, C. Ashall +34

The Type Ia supernova (SN Ia) LSQ14fmg exhibits exaggerated properties which may help to reveal the origin of the "super-Chandrasekhar" (or 03fg-like) group. The optical spectrum i…

astro-ph.HE2020★ 28 cited

The Slow Demise of the Long-Lived SN 2005ip

Ori D. Fox, Claes Fransson, Nathan Smith +16

The Type IIn supernova (SN) 2005ip is one of the most well-studied and long-lasting examples of a SN interacting with its circumstellar environment. The optical light curve plateau…

astro-ph.HE2020★ 21 cited

SN 2020bqj: a Type Ibn supernova with a long lasting peak plateau

E. C. Kool, E. Karamehmetoglu, J. Sollerman +31

Context: Type Ibn supernovae are a rare class of stripped envelope supernovae interacting with a helium-rich CSM. The majority of the SNe Ibn reported display a surprising homogene…

astro-ph.HE2020★ 11 cited

The Carnegie Supernova Project II. Observations of SN 2014ab possibly revealing a 2010jl-like SN IIn with pre-existing dust

T. J. Moriya, M. D. Stritzinger, F. Taddia +18

We present optical and near-infrared photometry and spectroscopy of the Type IIn supernova (SN) 2014ab, obtained by the Carnegie Supernova Project II (CSP-II) and initiated immedia…

astro-ph.HE2020★ 14 cited

ASASSN-18am/SN 2018gk : An overluminous Type IIb supernova from a massive progenitor

Subhash Bose, Subo Dong, C. S. Kochanek +29

ASASSN-18am/SN 2018gk is a newly discovered member of the rare group of luminous, hydrogen-rich supernovae (SNe) with a peak absolute magnitude of mag that is in…

astro-ph.HE2020★ 22 cited

The Carnegie Supernova Project II. Observations of the intermediate luminosity red transient SNhunt120

M. D. Stritzinger, F. Taddia, M. Fraser +23

We present multi-wavelength observations of two gap transients followed by the Carnegie Supernova Project-II and supplemented with data obtained by a number of different programs.…

astro-ph.HE2020★ 22 cited

The Carnegie Supernova Project II. Observations of the luminous red nova AT 2014ej

M. D. Stritzinger, F. Taddia, M. Fraser +29

We present optical and near-infrared broadband photometry and optical spectra of AT 2014ej from the the Carnegie Supernova Project-II. These observations are complemented with data…

astro-ph.HE2020★ 36 cited

Carnegie Supernova Project-II: A new method to photometrically identify sub-types of extreme Type Ia Supernovae

C. Ashall, J. Lu, C. Burns +16

We present a new method to photometrically delineate between various sub-types of type Ia supernovae (SNe Ia). Using the color-stretch parameters, or , and the tim…

astro-ph.HE2020★ 56 cited

The origin of pulsating ultra-luminous X-ray sources: Low- and intermediate-mass X-ray binaries containing neutron star accretors

Devina Misra, Tassos Fragos, Thomas Tauris +2

Ultra-luminous X-ray sources (ULXs) are those X-ray sources located away from the centre of their host galaxy with luminosities exceeding the Eddington limit of a stellar-mass blac…

astro-ph.HE2020★ 10 cited

Early neutron star evolution in high-mass X-ray binaries

Wynn C. G. Ho, M. J. P. Wijngaarden, Nils Andersson +2

The application of standard accretion theory to observations of X-ray binaries provides valuable insights into neutron star properties, such as their spin period and magnetic field…

astro-ph.HE2020★ 74 cited

Lense-Thirring frame dragging induced by a fast-rotating white dwarf in a binary pulsar system

V. Venkatraman Krishnan, M. Bailes, W. van Straten +9

Radio pulsars in short-period eccentric binary orbits can be used to study both gravitational dynamics and binary evolution. The binary system containing PSR J11416545 includes…