Search Publications
Long-term change in the cyclotron line energy in Hercules X-1
Harrison, F. A.; Klochkov, D.; Wilms, J. +5 more
Aims: We investigate the long-term evolution of the cyclotron resonance scattering feature (CRSF) in the spectrum of the binary X-ray pulsar
Metho…
The return to the hard state of GX 339-4 as seen by Suzaku
Petrucci, P. -O.; Fender, R.; Koerding, E. +2 more
Disk recession is of prime importance to understand the physics of the state transitions in X-ray binaries. The microquasar GX 339-4 was observed by Suzaku five times spaced by a few days during its transition back to the hard state at the end of its 2010-2011 outburst. The 2-10 keV source flux decreases by a factor ~10 between the beginning and t…
Wind collisions in three massive stars of Cygnus OB2
Nazé, Yaël; Rauw, Gregor; Cazorla, Constantin
Aims: We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 association: Cyg OB2 #5, Cyg OB2 #8A, and Cyg OB2 #12.
Methods: To this aim, dedicated X-ray observations from XMM-Newton and Swift are used, as well as archival ROSAT and Suzaku data.
Results: Our results on Cyg OB2 #8A improve the phase c…
Investigating the hard X-ray emission from the hottest Abell cluster A2163 with Suzaku
Pratt, G. W.; Reiprich, T. H.; Ota, N. +3 more
Context. We present the results from Suzaku of the hottest Abell galaxy cluster
Aims: To study the physics of gas heating in cluster mergers, we investigated hard X-ray emission from the merging cluster
Methods: We analyzed ha…
Suzaku study of gas properties along filaments of A2744
Zhang, Y. -Y.; Finoguenov, A.; Akamatsu, H. +2 more
Context. We present the results of Suzaku observations of a massive galaxy cluster
Aims: By using long X-ray observations of
Disk emission and atmospheric absorption lines in black hole candidate 4U 1630-472
Różańska, A.; Madej, J.; Bagińska, P. +2 more
Context. We analyzed Suzaku data of the black hole candidate 4U 1630-472 when it was in the high/soft state. The source, known for X-ray outbursts and for absorption dips, has an X-ray continuum spectrum that is interpreted correctly as emission from an accretion disk. Additionally, two absorption lines from He and H-like iron have been clearly de…