A possible line feature at 73 keV from the Crab nebula.
Abstract
Evidence is reported for a possible line feature at 73 keV from the Crab Nebula. The experiment was conducted with a balloon-borne high-resolution gamma-ray spectrometer on June 10, 1974, over Palestine, Texas. The intensity and the width of the line derived from the fitting of these data are approximately 0.0038 photon per (sq cm-sec) and less than 4.9 keV FWHM, respectively. The line is superposed on a power-law continuum of 11.2 E to the -2.16 photons per (sq cm-keV) in the energy range from 53 to 300 keV, which is consistent with other measurements of the Crab Nebula spectrum.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- August 1979
- DOI:
- 10.1086/157252
- Bibcode:
- 1979ApJ...231..896L
- Keywords:
-
- Crab Nebula;
- Energy Spectra;
- Gamma Rays;
- Line Spectra;
- X Ray Spectra;
- Balloon-Borne Instruments;
- Energy Dissipation;
- Radiation Detectors;
- Astrophysics;
- Crab Nebula:Gamma-Ray Spectra