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Constraining the IMF using TeV gamma ray absorption | | J.S. Bullock
; R.S. Somerville
; D. MacMinn
; J.R. Primack
; | | Date: |
20 Dec 1998 | | Journal: | Astropart.Phys. 11 (1999) 111-112 | | Subject: | astro-ph | | Abstract: | Gamma rays of ~TeV energies from distant sources suffer attenuation due to pair production off of ~1 micron EBL photons. We may exploit this process in order to indirectly measure the EBL and constrain models of galaxy formation. Here, using semi-analytic models of galaxy formation, we examine how gamma ray absorption may be used as an indirect probe of the stellar initial mass function (IMF), although there is a degeneracy with dust modeling. We point out that with the new generation of gamma ray telescopes including STACEE, MAGIC, HESS, VERITAS, and Milagro, we should soon possess a wealth of new data and a new method for probing the nature of the IMF. | | Source: | arXiv, astro-ph/9812370 | | Services: | Forum | Review | PDF | Favorites | |
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