Johan Bleeker

The X-ray synchrotron emission of RCW 86 and the implications for its age (2006)

Vink, Jacco, Bleeker, Johan, Van Der Heyden, Kurt, Bykov, Andrei, Bamba, Aya, Yamazaki, Ryo

We report here X-ray imaging spectroscopy observations of the northeastern shell of the supernova remnant RCW 86 with Chandra and XMM-Newton. Along this part of the shell the dominant X-ray radiation...

High Resolution X-ray Spectroscopy of G292.0+1.8/MSH 11-54 (2004)

Vink, Jacco, Bleeker, Johan, Kaastra, Jelle, Rasmussen, Andrew

We present a preliminary analysis of XMM-Newton observations of the oxygen-rich supernova remnant G292.0+1.8 (MSH 11-54). Although the spatial extent of the remnant is 8 arcmin the bright central bar...

The XEUS Mission (2002)

Bleeker, Johan, Mendez, Mariano

XEUS, the X-ray Evolving Universe Spectroscopy mission, is at present an ESA-ISAS initiative for the study of the evolution of the hot Universe in the post-Chandra/XMM-Newton era. The key science...

A synoptic spectral study of Cassiopeia-A based on XMM-Newton and BeppoSax observations (2002)

Bleeker, Johan, Vink, Jacco, Van Der Heyden, Kurt, Willingale, Dick, Kaastra, Jelle, Laming, Martin

In this paper we present recent image and spectral data of Cas-A obtained with XMM-Newton and BeppoSAX. Analysis of the hard X-ray continuum does not support an interpretation of the hard X-radiation...

Non-thermal bremsstrahlung as the dominant hard X-ray continuum emission from the supernova remnant MSH14-63 (RCW 86) (2002)

Vink, Jacco, Bleeker, Johan, Kaastra, Jelle, Van Der Heyden, Kurt, Rasmussen, Andrew, Dickel, John

We present an analysis of the X-ray emission of the supernova remnant MSH14-63, which was partially covered by four observations with XMM-Newton. The detection of Fe K emission at 6.4 keV, and the...

XMM-Newton observations of MSH 14-63 (RCW 86) (2001)

Vink, Jacco, Bleeker, Johan, Kaastra, Jelle, Van Der Heyden, Kurt, Dickel, John

We present an analysis of the X-ray emission of the supernova remnant MSH14-63, which was partially covered by three observations with XMM-Newton. The detection of Fe K emission at 6.4 keV, and the...

Detection of the 67.9 keV and 78.4 keV lines associated with the radioactive decay of Ti-44 in Cassiopeia A (2001)

Vink, Jacco, Laming, J. Martin, Kaastra, Jelle, Bleeker, Johan, Bloemen, Hans, Oberlack, Uwe

We report the detection of the Sc-44 nuclear decay lines at 67.9 keV and 78.4 keV associated with the nuclear decay of Ti-44 in Cassiopeia A. The line emission was observed by the PDS instrument on...

The expansion of Cassiopeia A as seen in X-rays (1998)

Vink, Jacco, Bloemen, Hans, Kaastra, Jelle, Bleeker, Johan

We have for the first time measured the overall expansion rate of the supernova remnant Cas A as seen in X-rays using ROSAT and Einstein HRI images with time differences up to almost 17 years. The...

X-ray spectroscopy of the supernova remnant RCW 86 (1997)

Vink, Jacco, Kaastra, Jelle, Bleeker, Johan

We present an analysis of ASCA X-ray data of SNR RCW 86. There appears to be a remarkable spectral variation over the remnant, indicating temperatures varying from 0.8 keV to > 3 keV. We have fitted...