Photon-photon pair production and the opacity of SN1987A to TeV and PeV gamma-rays

Details Photon-photon pair production and the opacity of SN1987A to TeV and PeV gamma-rays Photon-photon pair production and the opacity of SN1987A to TeV and PeV gamma-rays

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987natur.329..135p&link_type=abstract

Nature (ISSN 0028-0836), vol. 329, Sept. 10, 1987, p. 135-138.

Physics

16

Cosmic Rays, Opacity, Pair Production, Photons, Supernovae, Magellanic Clouds, Particle Acceleration, Photosphere

Scientific paper

Interaction of newly accelerated cosmic-ray nuclei with target material within an expanding supernova is expected to produce an observable flux from SN1987A of very high-energy and possibly ultrahigh-energy gamma rays in the TeV and PeV ranges. The presence of intense infrared emission from the supernova itself will, however, make some regions of SN1987A opaque to TeV and PeV gamma rays due to pair-production interactions. Based on observations at these energies and knowledge of the regions of SN1987A which could be contributing gamma rays, photon-photon pair-production interactions are discussed, and the regions of SN1987A from which TeV and PeV gamma rays may be observed are calculated.

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