Annihilating dark matter or noise?: A statistical examination of the Fermi GeV excess around the Galactic Centre
| dc.contributor.author | Mirabal, Nestor | |
| dc.date.accessioned | 2020-09-02T15:41:49Z | |
| dc.date.available | 2020-09-02T15:41:49Z | |
| dc.date.issued | 2019-04-05 | |
| dc.description.abstract | Excess Fermi GeV emission around the Galactic Centre has been interpreted as a possible signature of annihilating dark matter. Here we analyse three aspects of this claim: its spectral cutoff, the correlation between the spectral shape of the purported signal and known noise components, and its brightness profile. Experimentally, the correlations that exist between the GeV excess and known sources of noise make it difficult to conclude that a dark matter signal claim can be made without independent direct detection confirmation. As a possible way forward, we introduce three criteria that could potentially help to validate a dark matter annihilation signal in gamma rays. | en_US |
| dc.description.sponsorship | I acknowledge support from the Spanish taxpayers through a Ram´on y Cajal fellowship during the early stages of this work. I thank Jos´e Luis Contreras for helpful comments. I would like to acknowledge all the cooks at the ramen shop inside the Kanayama Station in Nagoya, where the bulk of the calculations were completed during the Fifth International Fermi Symposium. This research was supported by a senior appointment to the NASA Postdoctoral Program at the Goddard Space Flight Center, administered by Oak Ridge Associated Universities through a contract with NASA. | en_US |
| dc.description.uri | https://arxiv.org/abs/1411.7410 | en_US |
| dc.format.extent | 4 pages | en_US |
| dc.genre | journal articles preprints | en_US |
| dc.identifier | doi:10.13016/m2vpgz-z1cz | |
| dc.identifier.citation | Nestor Mirabal, Annihilating dark matter or noise?: A statistical examination of the Fermi GeV excess around the Galactic Centre, https://arxiv.org/abs/1411.7410 | en_US |
| dc.identifier.uri | http://hdl.handle.net/11603/19561 | |
| dc.language.iso | en_US | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
| dc.relation.ispartof | UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Annihilating dark matter or noise?: A statistical examination of the Fermi GeV excess around the Galactic Centre | en_US |
| dc.type | Text | en_US |