output
19932026
Showing 2017 · astro-ph.HEShow all

60 papers · 2 filters

astro-ph.HE2017★ 27 cited

Anatomy of the AGN in NGC 5548 IX. Photoionized emission features in the soft X-ray spectra

Junjie Mao, J. S. Kaastra, M. Mehdipour +10

The X-ray narrow emission line region (NELR) of the archetypal Seyfert 1 galaxy NGC\,5548 has been interpreted as a single-phase photoionized plasma that is absorbed by some of the…

astro-ph.HE2017★ 43 cited

Temperature Structure in the Perseus Cluster Core Observed with Hitomi

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192

The present paper investigates the temperature structure of the X-ray emitting plasma in the core of the Perseus cluster using the 1.8--20.0 keV data obtained with the Soft X-ray S…

astro-ph.HE2017★ 43 cited

An image-based search for pulsars among Fermi unassociated LAT sources

D. A. Frail, P. S. Ray, K. P. Mooley +9

We describe an image-based method that uses two radio criteria, compactness and spectral index, to identify promising pulsar candidates among Fermi Large Area Telescope (LAT) unass…

astro-ph.HE2017★ 126 cited

Atomic data and spectral modeling constraints from high-resolution X-ray observations of the Perseus cluster with Hitomi

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192

The Hitomi SXS spectrum of the Perseus cluster, with 5 eV resolution in the 2-9 keV band, offers an unprecedented benchmark of the atomic modeling and database for hot collis…

astro-ph.HE2017★ 18 cited

Hitomi Observations of the LMC SNR N132D: Highly Redshifted X-ray Emission from Iron Ejecta

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191

We present Hitomi observations of N132D, a young, X-ray bright, O-rich core-collapse supernova remnant in the Large Magellanic Cloud (LMC). Despite a very short observation of only…

astro-ph.HE2017★ 116 cited

Solar abundance ratios of the iron-peak elements in the Perseus Cluster

Hitomi Collaboration

The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae. Therefore, X-ray spectroscopy…

astro-ph.HE2017★ 192 cited

The SUrvey for Pulsars and Extragalactic Radio Bursts II: New FRB discoveries and their follow-up

S. Bhandari, E. F. Keane, E. D. Barr +47

We report the discovery of four Fast Radio Bursts (FRBs) in the ongoing SUrvey for Pulsars and Extragalactic Radio Bursts (SUPERB) at the Parkes Radio Telescope: FRBs 150610, 15120…

astro-ph.HE2017★ 13 cited

Glimpse of the highly obscured HMXB IGR J16318-4848 with Hitomi

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191

We report a Hitomi observation of IGR J16318-4848, a high-mass X-ray binary system with an extremely strong absorption of N_H~10^{24} cm^{-2}. Previous X-ray studies revealed that…

astro-ph.HE2017★ 60 cited

All-flavor search for a diffuse flux of cosmic neutrinos with 9 years of ANTARES data

ANTARES Collaboration, A. Albert, M. André +125

The ANTARES detector is at present the most sensitive neutrino telescope in the Northern Hemisphere. The highly significant cosmic neutrino excess observed by the Antarctic IceCube…

astro-ph.HE2017★ 193 cited

Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory

A. Albert, M. Andre, M. Anghinolfi +1931

The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merg…

astro-ph.HE2017★ 152 cited

Atmospheric gas dynamics in the Perseus cluster observed with Hitomi

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +195

Extending the earlier measurements reported in Hitomi collaboration (2016, Nature, 535, 117), we examine the atmospheric gas motions within the central 100~kpc of the Perseus clust…

astro-ph.HE2017★ 109 cited

Gentle re-energisation of electrons in merging galaxy clusters

F. de Gasperin, H. T. Intema, T. W. Shimwell +6

Galaxy clusters are the most massive constituents of the large-scale structure of the Universe. While the hot thermal gas that pervades galaxy clusters is relatively well understoo…

astro-ph.HE2017★ 19 cited

Charge exchange in galaxy clusters

Liyi Gu, Junjie Mao, Jelle de Plaa +3

Though theoretically expected, the charge exchange emission from galaxy clusters has not yet been confidently detected. Accumulating hints were reported recently, including a rathe…

astro-ph.HE2017★ 68 cited

Measurements of resonant scattering in the Perseus cluster core with Hitomi SXS

Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192

Thanks to its high spectral resolution (~5 eV at 6 keV), the Soft X-ray Spectrometer (SXS) on board Hitomi enables us to measure the detailed structure of spatially resolved emissi…

astro-ph.HE2017★ 10 cited

Chandra imaging of the kpc extended outflow in 1H 0419-577

L. Di Gesu, E. Costantini, E. Piconcelli +3

The Seyfert 1 galaxy 1H 0419-577 hosts a kpc extended outflow that is evident in the [\ion{O}{iii}] image and that is also detected as a warm absorber in the UV/X-ray spectru…

astro-ph.HE2017★ 14 cited

A Deep Pulse Search in Eleven Low Mass X-Ray Binaries

A. Patruno, K. Wette, C. Messenger

We present a systematic coherent X-ray pulsation search in eleven low mass X-ray binaries (LMXBs). We select a relatively broad variety of LMXBs, including persistent and transient…

astro-ph.HE2017★ 17 cited

Multi-wavelength campaign on NGC7469 II. Column densities and variability in the X-ray spectrum

U. Peretz, E. Behar, G. A. Kriss +16

We investigate the ionic column density variability of the ionized outflows associated with NGC7469, to estimate their location and power. This could allow a better understan…

astro-ph.HE2017★ 67 cited

Simultaneous Chandra and VLA Observations of the Transitional Millisecond Pulsar PSR J1023+0038: Anti-correlated X-ray and Radio Variability

Slavko Bogdanov, Adam T. Deller, James C. A. Miller-Jones +6

We present coordinated Chandra X-ray Observatory and Karl G. Jansky Very Large Array observations of the transitional millisecond pulsar PSR J1023+0038 in its low-luminosity accret…

astro-ph.HE2017★ 40 cited

Investigating the interstellar dust through the Fe K-edge

D. Rogantini, E. Costantini, S. T. Zeegers +5

The chemical and physical properties of interstellar dust in the densest regions of the Galaxy are still not well understood. X-rays provide a powerful probe since they can penetra…

astro-ph.HE2017★ 25 cited

Tomographic imaging of the Fermi-LAT gamma-ray sky through cross-correlations: A wider and deeper look

Alessandro Cuoco, Maciej Bilicki, Jun-Qing Xia +1

We investigate the nature of the extragalactic unresolved gamma-ray background (UGRB) by cross-correlating several galaxy catalogs with sky-maps of the UGRB built from 78 months of…

astro-ph.HE2017★ 16 cited

On the Papaloizou-Pringle instability in tidal disruption events

Rebecca Nealon, Daniel J. Price, Clément Bonnerot +1

We demonstrate that the compact, thick disc formed in a tidal disruption event may be unstable to non-axisymmetric perturbations in the form of the Papaloizou-Pringle instability.…

astro-ph.HE2017★ 83 cited

The rate of WD-WD head-on collisions in isolated triples is too low to explain standard type Ia supernovae

S. Toonen, H. B. Perets, A. S. Hamers

Type Ia supernovae (Ia-SNe) are thought to arise from the thermonuclear explosions of white dwarfs (WDs). The progenitors of such explosions are still highly debated; in particular…

astro-ph.HE2017★ 9 cited

Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 with a radio relic

Madoka Itahana, Motokazu Takizawa, Hiroki Akamatsu +10

We present the results of Suzaku and Chandra observations of the galaxy cluster RXC J1053.7+5453 (), which contains a radio relic. The radio relic is located at the dista…

astro-ph.HE2017★ 54 cited

Density diagnostics of ionized outflows in active galactic nuclei: X-ray and UV absorption lines from metastable levels in Be-like to C-like ions

Junjie Mao, J. S. Kaastra, M. Mehdipour +3

Ionized outflows in Active Galactic Nuclei (AGN) are thought to influence their nuclear and local galactic environment. However, the distance of the outflows with respect to the ce…