Limit on the Angular Size of Cyg XR-1

Details Limit on the Angular Size of Cyg XR-1 Limit on the Angular Size of Cyg XR-1

Jun 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969natur.222..967w&link_type=abstract

Nature, Volume 222, Issue 5197, pp. 967 (1969).

Other

2

Scientific paper

BOTH nebular and stellar objects have been identified as discrete sources of cosmic X-rays. Representative of the first is the Crab Nebula, the size of which has been measured to be 1 to 2 arc min in the energy range 1-6 keV according to observations during a lunar occupation1 and with a modulation collimator2. This size is comparable with the optical size of the nebula. Representative of stellar sources is Sco X-1, the X-ray size of which has been shown to be less than 20 arc s by a measurement with a modulation collimator, also in the energy range 1-6 keV (ref. 3). The optical counterpart of Sco X-1 is an irregularly variable blue star4. The tentative identifications of Cas XR-1 with the supernova remnant, Cas A (ref. 5, and of several other X-ray sources with blue stars (Cyg X-2 (ref. 6), Cen XR-2 (ref. 7)) obviously suggest that these particular sources can be assigned to the nebular and the stellar classes, respectively.

Affiliated with

Also associated with

No associations

Rating

Limit on the Angular Size of Cyg XR-1 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 Limit on the Angular Size of Cyg XR-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limit on the Angular Size of Cyg XR-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1237560