Detection of 2.93 MS pulsations in SCO X-1

Details Detection of 2.93 MS pulsations in SCO X-1 Detection of 2.93 MS pulsations in SCO X-1

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.296..377d&link_type=abstract

In ESA, The 23rd ESLAB Symposium on Two Topics in X Ray Astronomy. Volume 1: X Ray Binaries p 377-379 (SEE N90-25711 19-89)

Astronomy and Astrophysics

Astronomy

2

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

Scientific paper

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.

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