TY - GEN
T1 - Cosmic ray production and emission in M82
AU - Yoast-Hull, Tova
AU - Everett, John
AU - Gallagher, J. S.
AU - Zweibel, Ellen
N1 - Funding Information:
This work was supported in part by NSF grants AST-0708967, AST-0903900, PHY-0821899 (to CMSO), PHY-09069061 (to the IceCube Collaboration).
PY - 2011/9
Y1 - 2011/9
N2 - Starting from first principles, we construct a simple model for the evolution of energetic particles produced by supernovae in the starburst galaxy M82. The supernova rate, geometry, and properties of the interstellar medium are all well observed in this nearby galaxy. Assuming a uniform interstellar medium and constant cosmic-ray injection rate, we estimate the cosmic-ray proton and primary & secondary electron/positron populations. From these particle spectra, we predict the gamma ray flux and the radio synchrotron spectrum. The model is then compared to the observed radio and gamma-ray spectra of M82 as well as previous models by Torres (2004), Persic et al. (2008), and de Cea del Pozo et al. (2009). Through this project, we aim to build a better understanding of the calorimeter model, in which energetic particle fluxes reflect supernova rates, and a better understanding of the radio-FIR correlation in galaxies.
AB - Starting from first principles, we construct a simple model for the evolution of energetic particles produced by supernovae in the starburst galaxy M82. The supernova rate, geometry, and properties of the interstellar medium are all well observed in this nearby galaxy. Assuming a uniform interstellar medium and constant cosmic-ray injection rate, we estimate the cosmic-ray proton and primary & secondary electron/positron populations. From these particle spectra, we predict the gamma ray flux and the radio synchrotron spectrum. The model is then compared to the observed radio and gamma-ray spectra of M82 as well as previous models by Torres (2004), Persic et al. (2008), and de Cea del Pozo et al. (2009). Through this project, we aim to build a better understanding of the calorimeter model, in which energetic particle fluxes reflect supernova rates, and a better understanding of the radio-FIR correlation in galaxies.
KW - cosmic rays
KW - galaxies: individual (M82)
KW - galaxies: starburst
KW - gamma rays: theory
KW - radio continuum: galaxies
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U2 - 10.1017/S1743921312009490
DO - 10.1017/S1743921312009490
M3 - Conference contribution
AN - SCOPUS:84865695843
SN - 9781107019843
T3 - Proceedings of the International Astronomical Union
SP - 397
EP - 399
BT - The Spectral Energy Distribution of Galaxies
A2 - Tuffs, Richard J.
A2 - Popescu, Cristina C.
ER -
