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A new estimate of the Galactic interstellar radiation field between 0.1 microns and 1000 microns

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arxiv astro-ph/0507119 v1 pith:H4D3HKSN submitted 2005-07-06 astro-ph

T. A. Porter , A. W. Strong This is my paper · ORCID
classification astro-ph
keywords galacticdistributiondustfieldradiationcalculatediffusestellar
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Cosmic-ray electrons and positrons propagating in the Galaxy produce diffuse gamma-rays via the inverse Compton (IC) process. The low energy target photon populations with which the cosmic-rays interact during propagation are produced by stars, this stellar light being reprocessed by Galactic dust. Detailed modelling of the Galactic stellar distribution, dust distribution, and treatment of the absorption and scattering of light is therefore required to obtain accurate models for the low energy Galactic photon distribution and spectrum. Using a realistic Galactic stellar distribution model, and dust distribution, we calculate the diffuse radiation field from stars in the Galaxy (the `optical' radiation field), including absorption and scattering. Using a dust heating code, we self-consistently calculate the infra-red radiation field for the same dust model used for the optical calculation; both transient and equilibrium heating are included. We present the calculated radiation field spectra and distributions, and will use these to calculate the expected Galactic diffuse IC gamma-ray spectrum.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Modeling the X-ray emission of the Boomerang nebula and implication for its potential ultrahigh-energy gamma-ray emission

    astro-ph.HE 2024-11 conditional novelty 6.0 of 10

    A dynamical PWN model fitted to X-ray intensity and photon-index radial profiles implies a weak magnetic field in the Boomerang nebula and a 10-50% inverse-Compton contribution to LHAASO J2226+6057 at 100 TeV.

  2. Deciphering the AMS cosmic-ray positron flux

    hep-ph 2019-09 reject novelty 5.0 of 10

    Using the Cannon-Ball model's original priors, the author computes a positron source spectrum whose shape matches AMS data, with an absolute normalization 23% higher than observed.

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