Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..597g&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. (12)597-(12)609
Astronomy and Astrophysics
Astronomy
3
Astronomical Models, Cataclysmic Variables, Gamma Ray Astronomy, Globular Clusters, Light (Visible Radiation), Pulsars, X Ray Astronomy, X Ray Sources, Balloon-Borne Instruments, H Alpha Line, Hubble Space Telescope, Proportional Counters, Rosat Mission, Soviet Satellites, X Ray Imagery, X Ray Telescopes
Scientific paper
In the past three years, a new era of study of globular clusters has begun with multiwavelength observations from the current generation of astronomical telescopes in space. We review the recent results obtained from our studies of compact binaries and x-ray sources in globulars with ROSAT and Hubble Space Telescope (HST) as well as our balloon-borne hard x-ray telescope EXITE (Energetic X-ray Imaging Telescope Experiment) and ground-based observations (CTIO). With ROSAT, we have obtained the most sensitive high resolution soft x-ray images of clusters which show multiple low luminosity sources in cluster cores that are likely indicative of the long-sought population of cataclysmic variables (CVs). We have obtained deep H-alpha images of two clusters with HST and found CV candiates for 3 of the ROSAT sources in the core of NGC 6397. New CTIO imaging and spectroscopy of two 'dim source' fields in omega-Cen are also described. With EXITE we carried out the first hard x-ray imaging observations of the cluster 47 Tuc; such studies can ultimately limit the populations of millisecond pulsars and pulsar emission mechanisms. A long ROSAT exposure on 47 Tuc also shows probable cluster diffuse emission, possibly due to hot gas from ablating millisecond pulsars. Multiwavelength studies of globular clusters may provide new constraints on problems as diverse as the origin of CVs and low mass X-ray binaries (LMXBs) and the origin of hot gas in globulars.
No associations
LandOfFree
Optical, X-ray and gamma-ray observations of compact objects in globular clusters 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 Optical, X-ray and gamma-ray observations of compact objects in globular clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical, X-ray and gamma-ray observations of compact objects in globular clusters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-783097