A comment on the emission from the Galactic Center as seen by the Fermi telescope

By Alexey Boyarsky, Denys Malyshev, Oleg Ruchayskiy. 2010

174 citations recorded by the source corpus.

In the recent paper of Hooper and Goodenough (2010) [10] it was reported that gamma-ray emission from the Galactic Center region contains an excess compared to the contributions from the large-scale diffuse emission and known point sources. This excess was argued to be consistent with a signal from annihilation of Dark Matter with a power law density profile. We reanalyze the Fermi data and find instead that it is consistent with the "standard model" of diffuse emission and of known point sources. The main reason for the discrepancy with the interpretation of Hooper and Goodenough (2010) [10] is different (as compared to the previous works) spectrum of the point source at the Galactic Center assumed by Hooper and Goodenough (2010) [10]. We discuss possible reasons for such an interpretation. (C) 2011 Elsevier B.V. All rights reserved.

Subfields: Nuclear and High Energy Physics, Radiation

View Paper: https://www.semanticscholar.org/paper/4d0eec6053fb98975cf85eb750ecb7d56aed7c5f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. Christoph Weniger
2. F. Calore
3. I. Cholis
4. C. McCabe
5. P. Hopkins
6. Anna Franckowiak
7. M. Dolan
8. A. Peter

In Radiation

1. R. Cameron
2. C. Gordon
3. Christoph Weniger
4. O. Macias

Citations in the corpus

• Dark matter and pulsar model constraints from Galactic Center Fermi-LAT gamma-ray observations (2013, methodology): “[15] found systematic errors of about 10% in a 2◦ around the GC by doing Monte Carlo simulations of a model with no GC diffuse source.”
• The impact of baryonic physics on the structure of dark matter haloes: the view from the FIRE cosmological simulations (2015, background): “…of thermally produced weakly interacting massive particle dark matter (Goodenough & Hooper 2009; Hooper & Goodenough 2011; Hooper & Linden 2011; Boyarsky et al. 2011; Abazajian & Kapling- c© 0000 RAS, MNRAS 000, 000–000 hat 2012; Gordon & Macías 2013; Macias & Gordon 2014; Abazajian et al.…”
• Galactic Center gamma-ray ``excess'' from an active past of the Galactic Centre? (2014, background): “For the emission at the GC, in the inner pixels, it has also been argued that a non-trivial spectrum of the source associated with the SgtA∗ source is a plausible explanation [7].”
• Extended gamma-ray emission from Coy Dark Matter (2014, methodology): “Evidence for a spatially extended excess of gamma-rays in this region was initially found in [10] and subsequently confirmed by several independent analyses [11–17].”
• The Fermi Galactic Center GeV Excess and Implications for Dark Matter (2017, background): “…& Macías 2013; Hooper & Slatyer 2013; Calore et al. 2015; Zhou et al. 2015; Ajello et al. 2016; Daylan et al. 2016), while other groups refuted the existence of an excess after considering the uncertainties in the modeling of sources and interstellar emission (e.g., Boyarsky et al. 2011).”
• Gravitational probes of dark matter physics (2017, background): “Indirect detection searches for dark matter annihilation or decay in the Universe today can improve signal over background by targeting high-density regions — be it the Galactic Center [441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454, 455, 456], satellite galaxies [457, 458, 459”
• DWARF GALAXY ANNIHILATION AND DECAY EMISSION PROFILES FOR DARK MATTER EXPERIMENTS (2014, background): “…PA 15213; mgwalker@andrew.cmu.edu pecially interesting in the context of recent claims of a Galactic center gamma-ray excess and associated dark matter interpretation (e.g. Hooper & Goodenough 2011; Boyarsky et al. 2011; Abazajian & Kaplinghat 2012, 2013; Abazajian et al. 2014; Daylan et al. 2014).”
• Background model systematics for the Fermi GeV excess (2014, background): “Recently, a number of groups searching for DM signals have analyzed the gamma-ray emission from the inner few degrees around the Galactic center (GC), and either claimed [49– 56] or refuted [57] the existence of an extended diffuse and spherical emission component on top of the standard astrophysica”
• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects (2012, result): “While it can be argued that there still remains a bit of controversy in some of these cases, evidence is certainly not compelling; instead, in the past, more refined analyses and new data often tended to either disfavor the DM hypotheses previously put forward or make it less compelling in view of v”