Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-03-20
Astron.Astrophys.403:L11-L14,2003
Astronomy and Astrophysics
Astrophysics
4 pages, 2 B&W figures and 1 color figure. Accepted for publication in A&A Letters. Revised reference list and minor correctio
Scientific paper
10.1051/0004-6361:20030423
We have discovered with XMM-Newton an X-ray source in the core of the globular cluster M13, whose X-ray spectral properties suggest that it is a quiescent neutron star X-ray binary. The spectrum can be well fitted with a pure hydrogen atmosphere model, with T=76 +/- 3 eV, R=12.8 +/- 0.4 km and an X-ray luminosity of 7.3 +/- 0.6 x 10^{32} erg/s. In the light of this result, we have discovered a strong correlation between the stellar encounter rate and the number of quiescent neutron stars found in the ten globular clusters observed so far by either XMM-Newton or Chandra. This result lends strong support to the idea that these systems are primarily produced by stellar encounters in the core of globular clusters.
Barret Didier
Gendre Bruce
Webb Natalie A.
No associations
LandOfFree
Discovery of a quiescent neutron star binary in the globular cluster M13 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 Discovery of a quiescent neutron star binary in the globular cluster M13, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of a quiescent neutron star binary in the globular cluster M13 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-205398