arXiv Open Access 2015

Dark Matter Velocity Spectroscopy

Eric G. Speckhard Kenny C. Y. Ng John F. Beacom Ranjan Laha

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Abstrak

Dark matter decays or annihilations that produce line-like spectra may be smoking-gun signals. However, even such distinctive signatures can be mimicked by astrophysical or instrumental causes. We show that velocity spectroscopy-the measurement of energy shifts induced by relative motion of source and observer-can separate these three causes with minimal theoretical uncertainties. The principal obstacle has been energy resolution, but upcoming experiments will reach the required 0.1% level. As an example, we show that the imminent Astro-H mission can use Milky Way observations to separate possible causes of the 3.5-keV line. We discuss other applications.

Topik & Kata Kunci

astro-ph.CO astro-ph.HE hep-ex hep-ph nucl-th

Penulis (4)

Eric G. Speckhard

Kenny C. Y. Ng

John F. Beacom

Ranjan Laha

Format Sitasi

APA MLA BibTeX

Speckhard, E.G., Ng, K.C.Y., Beacom, J.F., Laha, R. (2015). Dark Matter Velocity Spectroscopy. https://arxiv.org/abs/1507.04744

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Informasi Jurnal

Tahun Terbit: 2015
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓