Possible evidence for meV dark matter in dwarf spheroidals

Dan Hooper; Francesc Ferrer; Céline Boehm; Joseph Silk; Jacques Paul; N. Wyn Evans; Michel Casse

doi:10.1103/PhysRevLett.93.161302

Possible evidence for meV dark matter in dwarf spheroidals

Dan Hooper
, Francesc Ferrer
, Céline Boehm
, Joseph Silk
, Jacques Paul
, N. Wyn Evans
, Michel Casse

Department of Physics

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

The prospects for the observation of 511 KeV gamma-ray emission from the two closest dwarf spheroidals galaxies, Sagittarius and Draco were observed. The observed 511 keV emission from the galactic bulge was expected to be due to very light annihilating dark matter particles. It was suggested that as the galaxies have comparatively few stars, the prospects for 511 keV emission from standard astrophysical scenarios were minimal. But the observation showed that the dwarf spheroidals contain copious amounts of dark matter.

Original language	English
Article number	161302
Pages (from-to)	161302-1-161302-4
Journal	Physical Review Letters
Volume	93
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevLett.93.161302
State	Published - Oct 15 2004

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10.1103/PhysRevLett.93.161302

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abstract = "The prospects for the observation of 511 KeV gamma-ray emission from the two closest dwarf spheroidals galaxies, Sagittarius and Draco were observed. The observed 511 keV emission from the galactic bulge was expected to be due to very light annihilating dark matter particles. It was suggested that as the galaxies have comparatively few stars, the prospects for 511 keV emission from standard astrophysical scenarios were minimal. But the observation showed that the dwarf spheroidals contain copious amounts of dark matter.",

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AU - Hooper, Dan

AU - Ferrer, Francesc

AU - Boehm, Céline

AU - Silk, Joseph

AU - Paul, Jacques

AU - Evans, N. Wyn

AU - Casse, Michel

PY - 2004/10/15

Y1 - 2004/10/15

N2 - The prospects for the observation of 511 KeV gamma-ray emission from the two closest dwarf spheroidals galaxies, Sagittarius and Draco were observed. The observed 511 keV emission from the galactic bulge was expected to be due to very light annihilating dark matter particles. It was suggested that as the galaxies have comparatively few stars, the prospects for 511 keV emission from standard astrophysical scenarios were minimal. But the observation showed that the dwarf spheroidals contain copious amounts of dark matter.

AB - The prospects for the observation of 511 KeV gamma-ray emission from the two closest dwarf spheroidals galaxies, Sagittarius and Draco were observed. The observed 511 keV emission from the galactic bulge was expected to be due to very light annihilating dark matter particles. It was suggested that as the galaxies have comparatively few stars, the prospects for 511 keV emission from standard astrophysical scenarios were minimal. But the observation showed that the dwarf spheroidals contain copious amounts of dark matter.

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DO - 10.1103/PhysRevLett.93.161302

M3 - Article

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JO - Physical Review Letters

JF - Physical Review Letters

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Possible evidence for meV dark matter in dwarf spheroidals

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