output
19932026
Showing 2014 · astro-ph.HEShow all

12 papers · 2 filters

astro-ph.HE2014★ 201 cited

The Role of Fission in Neutron Star Mergers and its Impact on the r-Process Peaks

Marius Eichler, Almudena Arcones, Alexandra Kelic +10

Comparing observational abundance features with nucleosynthesis predictions of stellar evolution or explosion simulations can scrutinize two aspects: (a) the conditions in the astr…

astro-ph.HE2014★ 133 cited

A First Search for Cosmogenic Neutrinos with the ARIANNA Hexagonal Radio Array

ARIANNA Collaboration, S. W. Barwick, E. C. Berg +35

The ARIANNA experiment seeks to observe the diffuse flux of neutrinos in the 10^8 - 10^10 GeV energy range using a grid of radio detectors at the surface of the Ross Ice Shelf of A…

astro-ph.HE2014★ 89 cited

The Broad-Lined Type Ic SN 2012ap and the Nature of Relativistic Supernovae Lacking a Gamma-ray Burst Detection

D. Milisavljevic, R. Margutti, J. T. Parrent +20

We present ultraviolet, optical, and near-infrared observations of SN 2012ap, a broad-lined Type Ic supernova in the galaxy NGC 1729 that produced a relativistic and rapidly decele…

astro-ph.HE2014★ 116 cited

Comprehensive Observations of the Bright and Energetic Type Iax SN 2012Z: Interpretation as a Chandrasekhar Mass White Dwarf Explosion

M. D. Stritzinger, S. Valenti, P. Hoeflich +19

We present UV through NIR broad-band photometry, and optical and NIR spectroscopy of Type Iax supernova 2012Z. The data set consists of both early and late-time observations, inclu…

astro-ph.HE2014★ 80 cited

Possible Detection of the Stellar Donor or Remnant for the Type Iax Supernova 2008ha

Ryan J. Foley, Curtis McCully, Saurabh W. Jha +5

Type Iax supernovae (SNe Iax) are thermonuclear explosions that are related to SNe Ia, but are physically distinct. The most important differences are that SNe Iax have significant…

astro-ph.HE2014★ 184 cited

Early-time light curves of Type Ib/c supernovae from the SDSS-II Supernova Survey

F. Taddia, J. Sollerman, G. Leloudas +6

We analyse the early-time optical light curves (LCs) of 20 Type Ib/c supernovae (SNe Ib/c) from the Sloan Digital Sky Survey (SDSS) SN survey II, aiming to study their properties a…

astro-ph.HE2014★ 59 cited

Supernova 2010as: the Lowest-Velocity Member of a Family of Flat-Velocity Type IIb Supernovae

Gastón Folatelli, Melina C. Bersten, Hanindyo Kuncarayakti +23

We present extensive optical and near-infrared photometric and spectroscopic observations of the stripped-envelope (SE) supernova SN 2010as. Spectroscopic peculiarities, such as in…

astro-ph.HE2014★ 135 cited

Extensive HST Ultraviolet Spectra and Multi-wavelength Observations of SN 2014J in M82 Indicate Reddening and Circumstellar Scattering by Typical Dust

Ryan J. Foley, O. D. Fox, C. McCully +20

SN 2014J in M82 is the closest detected Type Ia supernova (SN Ia) in at least 28 years and perhaps in 410 years. Despite its small distance of 3.3 Mpc, SN 2014J is surprisingly fai…

astro-ph.HE2014★ 85 cited

Analysis of blue-shifted emission peaks in type II supernovae

J. P. Anderson, L. Dessart, C. P. Gutierrez +10

In classical P-Cygni profiles, theory predicts emission to peak at zero rest velocity. However, supernova spectra exhibit emission that is generally blue shifted. While this charac…

astro-ph.HE2014★ 377 cited

Characterizing the V-band light-curves of hydrogen-rich type II supernovae

Joseph P. Anderson, Santiago González-Gaitán, Mario Hamuy +26

We present an analysis of the diversity of V-band light-curves of hydrogen-rich type II supernovae. Analyzing a sample of 116 supernovae, several magnitude measurements are defined…

astro-ph.HE2014★ 29 cited

Early ultraviolet emission in the Type Ia supernova LSQ12gdj: No evidence for ongoing shock interaction

R. A. Scalzo, M. Childress, B. Tucker +37

We present photospheric-phase observations of LSQ12gdj, a slowly-declining, UV-bright Type Ia supernova. Classified well before maximum light, LSQ12gdj has extinction-corrected abs…

astro-ph.HE2014★ 95 cited

H-alpha Spectral diversity of type II supernovae

Claudia P. Gutiérrez, Joseph P. Anderson, Mario Hamuy +8

We present a spectroscopic analysis of the H-alpha profiles of hydrogen-rich type II supernovae. A total of 52 type II supernovae having well sampled optical light curves and spect…