activity
20042015
most citedProbing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S

505 citations · 5.7k across the 79 of their papers we have counts for

collaborators
Showing astro-phShow all

8 papers · 1 filter

astro-ph2008★ 62 cited

Very high energy gamma-ray observations of the galaxy clusters Abell 496 and Abell 85 with H.E.S.S

H. E. S. S. Collaboration, :, F. Aharonian

Aims: The nearby galaxy clusters Abell 496 and Abell 85 are studied in the very high energy (VHE, E > 100 GeV) band to investigate VHE cosmic rays (CRs) in this class of objects wh…

astro-ph2008★ 56 cited

Spectral variability in Cygnus X-3

L. Hjalmarsdotter, A. A. Zdziarski, A. Szostek +1

We model the broad-band X-ray spectrum of Cyg X-3 in all states displayed by this source as observed by the Rossi X-ray Timing Explorer. From our models, we derive for the first ti…

astro-ph2008★ 39 cited

A classification of the X-ray and radio states of Cyg X-3 and their long-term correlations

A. Szostek, A. A. Zdziarski, M. L. McCollough

We present a detailed classification of the X-ray states of Cyg X-3 based on the spectral shape and a new classification of the radio states based on the long-term correlated behav…

astro-ph2007★ 64 cited

Effects of the stellar wind on X-ray spectra of Cygnus X-3

A. Szostek, A. A. Zdziarski

We study X-ray spectra of Cyg X-3 from BeppoSAX, taking into account absorption and emission in the strong stellar wind of its companion. We find the intrinsic X-ray spectra are we…

astro-ph2006★ 31 cited

Jet radio emission in Cygnus X-1 and its orbital modulation

A. Szostek, A. A. Zdziarski

We present results of our detailed theoretical study of the observed orbital modulation of the radio emission in Cyg X-1. The modulation occurs due to free-free absorption in the w…

astro-ph2005★ 13 cited

The first near infrared detection of XTE J1118+480 in quiescence

Joanna Mikolajewska, Artur Rutkowski, Denise R. Goncalves +1

We report the first quiescent detection of KV UMa, the optical counterpart of XTE J1118+480 at near infrared. The observed magnitudes and colours are consistent with a K7-M0 V star…