Showing 2017 · astro-ph.HEShow all

52 papers · 2 filters

astro-ph.HE2017★ 41 cited

Studying the Ultraviolet Spectrum of the First Spectroscopically Confirmed Supernova at redshift two

M. Smith, M. Sullivan, R. C. Nichol +87

We present observations of DES16C2nm, the first spectroscopically confirmed hydrogen-free superluminous supernova (SLSN-I) at redshift z~2. DES16C2nm was discovered by the Dark Ene…

astro-ph.HE2017★ 30 cited

Bayesian Inference Constraints on Astrophysical Production of Ultra-high Energy Cosmic Rays and Cosmogenic Neutrino Flux Predictions

Andres Romero-Wolf, Maximo Ave

A flux of extra-terrestrial neutrinos at energies eV has the potential to serve as a cosmological probe of the high-energy universe as well as tests of fundamental par…

astro-ph.HE2017★ 71 cited

A Second Chromatic Timing Event of Interstellar Origin toward PSR J1713+0747

M. T. Lam, J. A. Ellis, G. Grillo +34

The frequency dependence of radio pulse arrival times provides a probe of structures in the intervening media. Demorest et al. 2013 was the first to show a short-term (~100-200 day…

astro-ph.HE2017★ 31 cited

A simultaneous search for prompt radio emission associated with the short GRB 170112A using the all-sky imaging capability of the OVRO-LWA

Marin M. Anderson, Gregg Hallinan, Michael W. Eastwood +10

We have conducted the most sensitive low frequency (below 100 MHz) search to date for prompt, low-frequency radio emission associated with short-duration gamma-ray bursts (GRBs), u…

astro-ph.HE2017★ 72 cited

Evidence for Dynamically Driven Formation of the GW170817 Neutron Star Binary in NGC 4993

A. Palmese, W. Hartley, F. Tarsitano +89

We present a study of NGC 4993, the host galaxy of the GW170817 gravitational wave event, the GRB170817A short gamma-ray burst (sGRB) and the AT2017gfo kilonova. We use Dark Energy…

astro-ph.HE2017★ 148 cited

Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star

Iair Arcavi, D. Andrew Howell, Daniel Kasen +50

Every supernova hitherto observed has been considered to be the terminal explosion of a star. Moreover, all supernovae with absorption lines in their spectra show those lines decre…

astro-ph.HE2017★ 117 cited

Single Sources in the Low-Frequency Gravitational Wave Sky: properties and time to detection by pulsar timing arrays

Luke Zoltan Kelley, Laura Blecha, Lars Hernquist +2

We calculate the properties, occurrence rates and detection prospects of individually resolvable 'single sources' in the low frequency gravitational wave (GW) spectrum. Our simulat…

astro-ph.HE2017★ 1k cited

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models

P. S. Cowperthwaite, E. Berger, V. A. Villar +141

We present UV, optical, and NIR photometry of the first electromagnetic counterpart to a gravitational wave source from Advanced LIGO/Virgo, the binary neutron star merger GW170817…

astro-ph.HE2017★ 584 cited

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart

M. Soares-Santos, D. E. Holz, J. Annis +142

We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our o…

astro-ph.HE2017★ 9 cited

NuSTAR Hard X-ray Observation of the Gamma-ray Binary Candidate HESS J1832-093

Kaya Mori, E. V. Gotthelf, Charles J. Hailey +13

We present a hard X-ray observation of the TeV gamma-ray binary candidate HESS J1832-093 coincident with supernova remnant (SNR) G22.7-0.2 using the Nuclear Spectroscopic Telescope…

astro-ph.HE2017★ 24 cited

A new method for extending solutions to the self-similar relativistic magnetohydrodynamics equations for black hole outflows

Chiara Ceccobello, Yuri Cavecchi, Martin H. M. Heemskerk +3

The paradigm in which magnetic fields play a crucial role in launching/collimating outflows in many astrophysical objects continues to gain support. However, semi-analytical models…

astro-ph.HE2017★ 25 cited

The NuSTAR Extragalactic Survey: Average broad-band X-ray spectral properties of the NuSTAR detected AGN

A. Del Moro, D. M. Alexander, J. A. Aird +18

We present a study of the average X-ray spectral properties of the sources detected by the NuSTAR extragalactic survey, comprising observations of the E-CDFS, EGS and COSMOS fields…

astro-ph.HE2017★ 32 cited

Optimal Frequency Ranges for Sub-Microsecond Precision Pulsar Timing

M. T. Lam, M. A. McLaughlin, J. M. Cordes +2

Precision pulsar timing requires optimization against measurement errors and astrophysical variance from the neutron stars themselves and the interstellar medium. We investigate op…

astro-ph.HE2017★ 27 cited

NuSTAR + XMM-Newton monitoring of the neutron star transient AX J1745.6-2901

G. Ponti, S. Bianchi, T. Munos-Darias +12

AX J1745.6-2901 is a high-inclination (eclipsing) transient neutron star (NS) Low Mass X-ray Binary (LMXB) showcasing intense ionised Fe K absorption. We present here the analysis…

astro-ph.HE2017★ 53 cited

NuSTAR Resolves the First Dual AGN above 10 keV in SWIFT J2028.5+2543

Michael J. Koss, Ana Glidden, Mislav Balokovic +19

We have discovered heavy obscuration in the dual active galactic nucleus (AGN) in the Swift/Burst Alert Telescope (BAT) source SWIFT J2028.5+2543 using Nuclear Spectroscopic Telesc…

astro-ph.HE2017★ 54 cited

The NuSTAR Serendipitous Survey: Hunting for The Most Extreme Obscured AGN at >10 keV

G. B. Lansbury, D. M. Alexander, J. Aird +27

We identify sources with extremely hard X-ray spectra (i.e., with photon indices of Gamma<0.6 in the 13 sq. deg. NuSTAR serendipitous survey, to search for the most highly obscured…

astro-ph.HE2017★ 56 cited

The Carnegie Supernova Project I: photometry data release of low-redshift stripped-envelope supernovae

M. D. Stritzinger, J. P. Anderson, C. Contreras +28

The first phase of the Carnegie Supernova Project (CSP-I) was a dedicated supernova follow-up program based at the Las Campanas Observatory that collected science data of young, lo…

astro-ph.HE2017★ 63 cited

Early Observations of the Type Ia Supernova iPTF 16abc: A Case of Interaction with Nearby, Unbound Material and/or Strong Ejecta Mixing

A. A. Miller, Y. Cao, A. L. Piro +19

Early observations of Type Ia supernovae (SNe Ia) provide a unique probe of their progenitor systems and explosion physics. Here we report the intermediate Palomar Transient Factor…

astro-ph.HE2017★ 99 cited

A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot) Comptonization processes

D. Porquet, J. N. Reeves, G. Matt +16

We perform an X-ray spectral analysis of the brightest and cleanest bare AGN known so far, Ark 120, in order to determine the process(es) at work in the vicinity of the SMBH. We pr…

astro-ph.HE2017★ 330 cited

BAT AGN Spectroscopic Survey I: Spectral Measurements, Derived Quantities, and AGN Demographics

Michael Koss, Benny Trakhtenbrot, Claudio Ricci +20

We present the first catalog and data release of the Swift-BAT AGN Spectroscopic Survey (BASS). We analyze optical spectra of the majority of AGN (77%, 641/836) detected based on t…

astro-ph.HE2017★ 25 cited

Looking at A 0535+26 at low luminosities with NuSTAR

Ralf Ballhausen, Katja Pottschmidt, Felix Fürst +12

We report on two NuSTAR observations of the HMXB A 0535+26 taken toward the end of its normal 2015 outburst at very low keV luminosities of erg/s an…

astro-ph.HE2017★ 79 cited

A Comprehensive Approach to Tau-Lepton Production by High-Energy Tau Neutrinos Propagating Through Earth

Jaime Alvarez-Muñiz, Washington R. Carvalho, Kévin Payet +3

There has been a recent surge in interest in the detection of lepton-induced air showers from detectors at altitude. When a neutrino () enters the Earth it produces $τ…

astro-ph.HE2017★ 72 cited

iPTF16asu: A Luminous, Rapidly-Evolving, and High-Velocity Supernova

L. Whitesides, R. Lunnan, M. M. Kasliwal +23

Wide-field surveys are discovering a growing number of rare transients whose physical origin is not yet well understood. Here, we present optical and UV data and analysis of iPTF16…

astro-ph.HE2017★ 23 cited

Disentangling the Complex Broadband X-ray Spectrum of IRAS 13197-1627 with NuSTAR, XMM-Newton and Suzaku

D. J. Walton, M. Brightman, G. Risaliti +8

We present results from a coordinated -+ observation of the type 1.8 Seyfert galaxy IRAS 13197-1627. This is a highly complex source, with strong contributions…