A search for a spinning white dwarf companion in Gamma-Cas-analogs

Details A search for a spinning white dwarf companion in Gamma-Cas-analogs A search for a spinning white dwarf companion in Gamma-Cas-analogs

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop...33m&link_type=abstract

XMM-Newton Proposal ID #05510002

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Hd 161103, Hd 119682, Xmm-Newton Proposal Id #05510002

Scientific paper

The origin of the hard X-ray spectrum emitted by Gamma-Cas remains a puzzle. Both a white dwarf accreting from the Be star circumstellar disc or magnetic interaction between the photosphere and the disc can explain the unusually hard X-ray emission. The recent discovery of several new G-Cas analogs offers new opportunities to address this problem. XMM-Newton observations of two G-Cas analogs, HD161103 and HD119682 revealed evidences of periodic modulations of the X-ray flux apparently stronger than in G-Cas itself. We propose to re-observe these two sources in order to confirm or not the stability of the period. Establishing the presence of a stable pulsation in any of these G-Cas analogs would be a major step forward in our understanding of the whole class.

Affiliated with

Also associated with

No associations

Rating

A search for a spinning white dwarf companion in Gamma-Cas-analogs 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 A search for a spinning white dwarf companion in Gamma-Cas-analogs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A search for a spinning white dwarf companion in Gamma-Cas-analogs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-955165