Change in the high-energy radiation from the Crab

Details Change in the high-energy radiation from the Crab Change in the high-energy radiation from the Crab

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...197..471g&link_type=abstract

Astrophysical Journal, vol. 197, Apr. 15, 1975, pt. 1, p. 471-479.

Computer Science

Sound

23

Crab Nebula, Gamma Rays, Pulsars, Radiant Flux Density, Angular Distribution, Background Radiation, Balloon Sounding, Histograms

Scientific paper

On 1973 July 23, the Cornell gamma-ray telescope had a second exposure to the Crab Nebula and pulsar via balloon flight from Palestine, Texas. On the previous flight, 1971 October 6, the signal from the pulsar had been unmistakably clear, especially at the highest energies (above 800 MeV), and an unpulsed component of similar average power had also been discernible. On the second flight, despite higher altitude, longer exposure, and improved electronics, the pulsed signal was barely detectable and the dc component not observable at all. The drop in intensity seems to increase with energy, being only a factor of 2 at 200 MeV but an order of magnitude at 1 GeV. There is some indication (not compelling) that the gamma-ray flux may have changed even within the 6-hour exposure. The first flight may have viewed the Crab in a state of enhanced high-energy emission correlated with the glitches that occurred on 1971 August 1 and October 25.

Affiliated with

Also associated with

No associations

Rating

Change in the high-energy radiation from the Crab 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 Change in the high-energy radiation from the Crab, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Change in the high-energy radiation from the Crab will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-947396