Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-04-05
Astrophys.J. 629 (2005) 192-203
Astronomy and Astrophysics
Astrophysics
ApJ in press
Scientific paper
10.1086/430776
Several nearby clusters exhibit an excess of soft X-ray radiation which cannot be attributed to the hot virialized intra-cluster medium. There is no consensus to date on the origin of the excess emission: it could be either of thermal origin, or due to an inverse Compton scattering of the cosmic microwave background. Using high resolution XMM-Newton data of Sersic 159-03 we first show that strong soft excess emission is detected out to a radial distance of 0.9 Mpc. The data are interpreted using the two viable models available, i.e., by invoking a warm reservoir of thermal gas, or relativistic electrons which are part of a cosmic ray population. The thermal interpretation of the excess emission, slightly favored by the goodness-of-fit analysis, indicates that the warm gas responsible for the emission is high in mass and low in metallicity.
Bonamente Massimiliano
Kaastra Jelle
Lieu Richard
Mittaz Jonathan P. D.
Nevalainen Jukka
No associations
LandOfFree
Thermal and non-thermal nature of the soft excess emission from Sersic 159-03 observed with XMM-Newton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal and non-thermal nature of the soft excess emission from Sersic 159-03 observed with XMM-Newton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal and non-thermal nature of the soft excess emission from Sersic 159-03 observed with XMM-Newton will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-576334