TY - JOUR
T1 - Interpreting the 1 to 10 MEV gamma-ray background
AU - Daly, Ruth A.
N1 - Funding Information:
As described above, the gamma ray back~-ound from about 200 keV to 1 MeV and from 10 MeV to at least 100 MeV is described by a single power law given by I Ip (e0) = 1.1 × 10 -2 \[E0(MeV)\-] 23 photons MeV -1 cm -2 s -1 sr -1 where Eo is the photon energy at a redshift of zero. It seems most reasonable to assume that this power law continues between 1 and 10 MeV, so that the 1 to 10 MeV feat'~re is superposed on this underlying power law. Then ~he spectrum of the I to 10 MeV feature is obtained by subtracting the power law from the total specific intensity. We shall assume that the 1 to 10 MeV feature may be described by II(,,o(E,) = k,T, --o~1/~ e-(~Eo)"', or Iy(,)(Eo) = kr Eo • -(~°)2. The theoretical motivation for these This work was supported in part by the National Science Foundation, and in part by the National Aeronautics and Space Administration.
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1989/8
Y1 - 1989/8
N2 - The origin of the 1 to 10 MeV feature in unknown. Indeed, the origin of the entire X and gamma-ray backgrounds remains enigmatic. The gamma-ray background (from about 200 keV to at least 100 MeV) appears to be well matched by a power law, with one nonpower law feature: the 1 to 10 MeV feature. Here, we present and discuss a functional form which fits the 1 to 10 MeV feature exceedingly well. Theoretical interpretations of this fit are discussed.
AB - The origin of the 1 to 10 MeV feature in unknown. Indeed, the origin of the entire X and gamma-ray backgrounds remains enigmatic. The gamma-ray background (from about 200 keV to at least 100 MeV) appears to be well matched by a power law, with one nonpower law feature: the 1 to 10 MeV feature. Here, we present and discuss a functional form which fits the 1 to 10 MeV feature exceedingly well. Theoretical interpretations of this fit are discussed.
UR - http://www.scopus.com/inward/record.url?scp=45349112964&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=45349112964&partnerID=8YFLogxK
U2 - 10.1016/0920-5632(89)90055-8
DO - 10.1016/0920-5632(89)90055-8
M3 - Article
AN - SCOPUS:45349112964
SN - 0920-5632
VL - 10
SP - 203
EP - 206
JO - Nuclear Physics B (Proceedings Supplements)
JF - Nuclear Physics B (Proceedings Supplements)
IS - 2
ER -