Searching For Ray Emission From Reticulum Ii By Fermi Lat Supported By National Natural Science Foundation Of China 11121092 11033005 11375202 11475191 11475189 The Cas Pilot B Program Xdb23020000 And The National Key Program For Research And Development 2016yfa0400200 PDF Download

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Searching for Γ-ray Emission from Reticulum II by Fermi-LAT *Supported by National Natural Science Foundation of China (11121092, 11033005, 11375202, 11475191, 11475189), the CAS Pilot B Program (XDB23020000) and the National Key Program for Research and Development (2016YFA0400200).

Searching for Γ-ray Emission from Reticulum II by Fermi-LAT *Supported by National Natural Science Foundation of China (11121092, 11033005, 11375202, 11475191, 11475189), the CAS Pilot B Program (XDB23020000) and the National Key Program for Research and Development (2016YFA0400200).
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Download Searching for Γ-ray Emission from Reticulum II by Fermi-LAT *Supported by National Natural Science Foundation of China (11121092, 11033005, 11375202, 11475191, 11475189), the CAS Pilot B Program (XDB23020000) and the National Key Program for Research and Development (2016YFA0400200). Book in PDF, ePub and Kindle

Abstract: Recently, many new dwarf spheroidal satellites (dSphs) have been discovered by the Dark Energy Survey (DES). These dSphs are ideal candidates for probing for gamma-ray emissions from dark matter (DM) annihilation. However, no significant signature has been found by the Fermi-LAT dSph observations. In this work, we reanalyze the Fermi-LAT Pass 8 data from the direction of Reticulum II, where a slight excess has been reported by some previous studies. We treat Reticulum II (DES J0335.6-5403) as a spatially extended source, and find that no significant gamma-ray signature is observed. Based on this result, we set upper-limits on the DM annihilation cross section.