Detection of 2.93 MS Pulsations in SCORPIUS-X-1
Abstract
The high frequency coherent pulsations detected during an observation of Sco X-1 are reported. Scorpius X-1 is an X-ray binary in the class exhibiting Quasi-Periodic Oscillations (QPO). The observation was taken with a balloon-borne phoswich detector sensitive to X-rays in the 18 to 120 keV energy band. Models for QPO sources involve a neutron star with low magnetic field and high spin rate in orbit with a low mass stellar companion. The pulsations are interpreted as the spin period of the neutron star.
- Publication:
-
Two Topics in X-Ray Astronomy, Volume 1: X Ray Binaries. Volume 2: AGN and the X Ray Background
- Pub Date:
- November 1989
- Bibcode:
- 1989ESASP.296..377D
- Keywords:
-
- Detection;
- Pulse Rate;
- Pulsed Radiation;
- Stellar Oscillations;
- Stellar Rotation;
- X Ray Binaries;
- Angular Momentum;
- Balloon-Borne Instruments;
- Neutron Stars;
- Periodic Variations;
- Pulse Amplitude;
- Pulse Duration;
- Spin Dynamics;
- X Ray Spectra;
- Astronomy