Circinus X-1 - X-ray observations with SAS 3

Details Circinus X-1 - X-ray observations with SAS 3 Circinus X-1 - X-ray observations with SAS 3

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...261..228d&link_type=abstract

Astrophysical Journal, Part 1, vol. 261, Oct. 1, 1982, p. 228-250.

Astronomy and Astrophysics

Astrophysics

32

Binary Stars, Stellar Models, X Ray Sources, Autocorrelation, Background Radiation, Radio Bursts, Sas-3, Shot Noise, Stellar Flares, Stellar Luminosity, X Ray Spectra

Scientific paper

Eight observations of Cir X-1 with SAS 3, each lasting 1-6 days, have yielded a variety of new phenomena, viz., a luminous state of steady emission, rapid large-intensity dips, an extremely rapid X-ray transition, and bright flares. Through searches for periodic X-ray pulsations were carried out on data trains of duration up to 6 days; upper limits for pulsations with periods greater than 250 microsec range down to 0.3%. Aperiodic variability with characteristic times of 0.4-1.0 sec was observed but is not well characterized by a simple shot noise model. No millisecond bursts were observed during 40,000 sec in three separate observations. Spectral parameters derived before and after several X-ray transitions indicate that the transitions are not due to absorption of X-rays by intervening gas. Models previously proposed for the Cir X-1 system do not easily provide explanations for all the complex phenomena reported herein.

Affiliated with

Also associated with

No associations

Rating

Circinus X-1 - X-ray observations with SAS 3 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 Circinus X-1 - X-ray observations with SAS 3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circinus X-1 - X-ray observations with SAS 3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1029185