output
19952026
most citedUniaxial Strain in Graphene by Raman Spectroscopy: G peak splitting, Gruneisen Parameters and Sample Orientation

2k citations

Showing 2015 · astro-ph.HEShow all

10 papers · 2 filters

astro-ph.HE2015★ 143 cited

Multiwavelength Study of Quiescent States of Mrk 421 with Unprecedented Hard X-Ray Coverage Provided by NuSTAR in 2013

M. Baloković, D. Paneque, G. Madejski +305

We present coordinated multiwavelength observations of the bright, nearby BL Lac object Mrk 421 taken in 2013 January-March, involving GASP-WEBT, Swift, NuSTAR, Fermi-LAT, MAGIC, V…

astro-ph.HE2015★ 5 cited

Estimating the distribution of rest-frame timescales for blazar jets: a statistical approach

I. Liodakis, D. Blinov, I. Papadakis +1

In any flux-density limited sample of blazars, the distribution of the timescale modulation factor , which quantifies the change in observed timescales compared to the rest…

astro-ph.HE2015★ 20 cited

A jet model for Galactic black-hole X-ray sources: the cutoff energy-phase-lag correlation

P. Reig, N. Kylafis

Galactic black-hole X-ray binaries emit a compact, optically thick, mildy relativistic radio jet when they are in the hard and hard-intermediate states. In a series of papers, we h…

astro-ph.HE2015★ 22 cited

Flux and spectral variability of the blazar PKS 2155-304 with XMM-Newton: Evidence of Particle Acceleration and Synchrotron Cooling

Jai Bhagwana, A. C. Gupta, I. E. Papadakis +1

We have analyzed XMM-Newton observations of the high energy peaked blazar, PKS 2155-304, made on 24 May 2002 in the 0.3 - 10 keV X-ray band. These observations display a mini-flare…

astro-ph.HE2015★ 9 cited

Broad-band X-ray spectra of anomalous X-ray pulsars and soft -ray repeaters: pulsars in a weak-accretion regime ?

A. Zezas, J. E. Trümper, N. D. Kylafis

We present the results from the analysis of the broad-band X-ray spectra of 5 Anomalous X-ray Pulsars (AXPs) and Soft -ray Repeaters (SGRs). We fit their Suzaku and INTEGRAL spe…

astro-ph.HE2015★ 11 cited

Variability of the soft X-ray excess in IRAS 13224-3809

E. S. Kammoun, I. E. Papadakis, B. M. Sabra

We study the soft excess variability of the narrow line Seyfert 1 galaxy IRAS 13224-3809. We considered all five archival XMM-Newton observations, and we applied the 'flux-flux plo…

astro-ph.HE2015★ 66 cited

Spectral and temporal properties of the ultra-luminous X-ray pulsar in M82 from 15 years of Chandra observations and analysis of the pulsed emission using NuSTAR

Murray Brightman, Fiona Harrison, Dominic J. Walton +8

The recent discovery by Bachetti et al. (2014) of a pulsar in M82 that can reach luminosities of up to 10^40 ergs s^-1, a factor of ~100 the Eddington luminosity for a 1.4 Msol com…

astro-ph.HE2015★ 122 cited

RoboPol: First season rotations of optical polarization plane in blazars

D. Blinov, V. Pavlidou, I. Papadakis +25

We present first results on polarization swings in optical emission of blazars obtained by RoboPol, a monitoring program of an unbiased sample of gamma-ray bright blazars specially…

astro-ph.HE2015★ 8 cited

Reconciling inverse-Compton Doppler factors with variability Doppler factors in blazar jets

I. Liodakis, A. Zezas, E. Angelakis +2

Blazar population models have shown that the inverse-Compton and variability Doppler factor estimates yield consistent results at the population level for flat spectrum radio quasa…

astro-ph.HE2015★ 15 cited

High Energy Polarization of Blazars : Detection Prospects

Nachiketa Chakraborty, Vasiliki Pavlidou, Brian Fields

Emission from blazar jets in the ultraviolet, optical, and infrared is polarized. If these low-energy photons were inverse-Compton scattered, the upscattered high-energy photons re…