PoS - Proceedings of Science
Volume 312 - 7th International Fermi Symposium (IFS2017) - Session Other Transients
Are Gamma-ray Novae Intrinsically Rare Or Just Nearby?
P. Morris,* G. Cotter, A. Brown, P. Chadwick
*corresponding author
Full text: pdf
Published on: December 12, 2017
Abstract
Fermi LAT data revealed classical novae as unexpected gamma-ray sources, yet only 6 of 69 of those optically detected in the first 8 years of Fermi LAT observations were confirmed as > 5σ gamma-ray sources. These proceedings outline Monte Carlo simulations in which a population of Galactic novae were simulated based on spatial distributions and R-band magnitudes based on their M31 counterparts. Interstellar extinction was added using a double exponential disc model, and gamma-ray properties were defined based on those of the original 6 gamma-ray novae. We demonstrate that observations are consistent will all classical novae being gamma-ray sources, and that the gamma-ray sky background is the largest inhibitor when discovering these sources. Furthermore, we predict that all classical novae occurring within ≈ 8 kpc and with mR ≤ 12 will be detected using the Fermi LAT.
DOI: https://doi.org/10.22323/1.312.0071
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