output
19922026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 2014 · astro-ph.HEShow all

17 papers · 2 filters

astro-ph.HE2014★ 154 cited

NuSTAR Spectroscopy of Multi-Component X-ray Reflection from NGC 1068

Franz E. Bauer, Patricia Arevalo, Dominic J. Walton +26

We report on observations of NGC1068 with NuSTAR, which provide the best constraints to date on its ~keV spectral shape. We find no strong variability over the past two decade…

astro-ph.HE2014★ 46 cited

NuSTAR Discovery of a cyclotron line in KS 1947+300

Felix Fuerst, Katja Pottschmidt, Joern Wilms +39

We present a spectral analysis of three simultaneous NuSTAR and Swift/XRT observations of the transient Be-neutron star binary KS 1947+300 taken during its outburst in 2013/2014. T…

astro-ph.HE2014★ 100 cited

Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the Narrow Line Seyfert 1 galaxy SWIFT J2127.4+5654

A. Marinucci, G. Matt, E. Kara +20

We present a broad band spectral analysis of the joint XMM-Newton and NuSTAR observational campaign of the Narrow Line Seyfert 1 SWIFT J2127.4+5654, consisting of 300 ks performed…

astro-ph.HE2014★ 23 cited

X-ray Spectral Components in the Afterglow of GRB 130925A

Eric C. Bellm, Nicolas M. Barriere, Varun Bhalerao +19

We have identified spectral features in the late-time X-ray afterglow of the unusually long, slow-decaying GRB 130925A using NuSTAR, Swift-XRT, and Chandra. A spectral component in…

astro-ph.HE2014★ 101 cited

{\it NuSTAR} Reveals an Intrinsically X-ray Weak Broad Absorption Line Quasar in the Ultraluminous Infrared Galaxy Markarian 231

Stacy H. Teng, W. N. Brandt, F. A. Harrison +24

We present high-energy (3--30 keV) {\it NuSTAR} observations of the nearest quasar, the ultraluminous infrared galaxy (ULIRG) Markarian 231 (Mrk 231), supplemented with new and sim…

astro-ph.HE2014★ 80 cited

Long term variability of Cygnus X-1: VI. Energy-resolved X-ray variability 1999-2011

V. Grinberg, K. Pottschmidt, M. Böck +11

We present the most extensive analysis of Fourier-based X-ray timing properties of the black hole binary Cygnus X-1 to date, based on 12 years of bi-weekly monitoring with RXTE fro…

astro-ph.HE2014★ 69 cited

NuSTAR Observations of Heavily Obscured Quasars at z ~ 0.5

G. B. Lansbury, D. M. Alexander, A. Del Moro +23

We present NuSTAR hard X-ray (3-79 keV) observations of three Type 2 quasars at z ~ 0.4-0.5, optically selected from the Sloan Digital Sky Survey (SDSS). Although the quasars show…

astro-ph.HE2014★ 5 cited

NuSTAR results and future plans for magnetar and rotation-powered pulsar observations

Hongjun An, Victoria M. Kaspi, Robert Archibald +27

The Nuclear Spectroscopic Telescope Array (NuSTAR) is the first focusing hard X-ray mission in orbit and operates in the 3-79 keV range. NuSTAR's sensitivity is roughly two orders…

astro-ph.HE2014★ 15 cited

Short-duration Radio Bursts with Apparent Extragalactic Dispersion

Pascal Saint-Hilaire, Arnold O. Benz, Christian Monstein

We present the results of the longest yet undertaken search for apparently extragalactic radio bursts at the Bleien Radio Observatory covering 21000 hours (898 days). The data were…

astro-ph.HE2014★ 53 cited

A Missing-Link in the Supernova-GRB Connection: The Case of SN 2012ap

Sayan Chakraborti, Alicia Soderberg, Laura Chomiuk +50

Gamma Ray Bursts (GRBs) are characterized by ultra-relativistic outflows, while supernovae are generally characterized by non-relativistic ejecta. GRB afterglows decelerate rapidly…

astro-ph.HE2014★ 109 cited

Broadband X-ray Spectra of the Ultraluminous X-ray Source Holmberg IX X-1 observed with NuSTAR, XMM-Newton and Suzaku

D. J. Walton, F. A. Harrison, B. W. Grefenstette +16

We present results from the coordinated broadband X-ray observations of the extreme ultraluminous X-ray source Holmberg IX X-1 performed by NuSTAR, XMM-Newton and Suzaku in late 20…

astro-ph.HE2014★ 30 cited

High Energy X-Ray Detection OF G359.89-0.08 (Sgr A-E): Magnetic Flux Tube Emission Powered By Cosmic Rays?

Shuo Zhang, Charles J. Hailey, Frederick K. Baganoff +11

We report the first detection of high-energy X-ray (E>10 keV) emission from the Galactic Center non-thermal filament G359.89-0.08 (Sgr A-E) using data acquired with the Nuclear Spe…

astro-ph.HE2014★ 89 cited

The soft X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view

G. Matt, A. Marinucci, M. Guainazzi +17

We present simultaneous XMM-Newton and NuSTAR observations of the `bare' Seyfert 1 galaxy, Ark 120, a system in which ionized absorption is absent. The NuSTAR hard X-ray spectral c…

astro-ph.HE2014★ 94 cited

The Disk Wind in the Rapidly Spinning Stellar-Mass Black Hole 4U 1630-472 Observed with NuSTAR

Ashley L. King, Dominic J. Walton, Jon M. Miller +14

We present an analysis of a short NuSTAR observation of the stellar-mass black hole and low-mass X-ray binary 4U 1630472. Reflection from the inner accretion disk is clearly det…

astro-ph.HE2014★ 55 cited

Fermi-LAT Detection of Gravitational Lens Delayed Gamma-ray Flares from Blazar B0218+357

C. C. Cheung, S. Larsson, J. D. Scargle +23

Using data from the Fermi Large Area Telescope (LAT), we report the first clear gamma-ray measurement of a delay between flares from the gravitationally lensed images of a blazar.…

astro-ph.HE2014★ 34 cited

Potential for Precision Measurement of Low-Energy Antiprotons with GAPS for Dark Matter and Primordial Black Hole Physics

T. Aramaki, S. E. Boggs, P. von Doetinchem +6

The general antiparticle spectrometer (GAPS) experiment is a proposed indirect dark matter search focusing on antiparticles produced by WIMP (weakly interacting massive particle) a…

astro-ph.HE2014★ 78 cited

The Broadband XMM-Newton and NuSTAR X-ray Spectra of Two Ultraluminous X-ray Sources in the Galaxy IC 342

Vikram Rana, Fiona A. Harrison, Matteo Bachetti +15

We present results for two Ultraluminous X-ray Sources (ULXs), IC 342 X-1 and IC 342 X-2, using two epochs of XMM-Newton and NuSTAR observations separated by 7 days. We obser…