Gamma ray constraints on decaying dark matter

M. Cirelli, E. Moulin, P. Panci, P. D. Serpico, A. Viana

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

We derive new bounds on decaying dark matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by H.E.S.S. We find that those from (i) are among the most stringent constraints currently available, for a large range of dark matter masses and a variety of decay modes, excluding half-lives up to similar to 10(26) to few 10(27) seconds. In particular, they rule out the interpretation in terms of decaying dark matter of the e(+/-) spectral features in PAMELA, Fermi and H.E.S.S., unless very conservative choices are adopted. We also discuss future prospects for CTA bounds from Fornax which, contrary to the present H.E.S.S. constraints of (ii), may allow for an interesting improvement and may become better than those from the current or future extragalactic Fermi data.
OriginalsprogEngelsk
TidsskriftPhysical Review D
Vol/bind86
Udgave nummer8
Sider (fra-til) 083506
ISSN2470-0010
DOI
StatusUdgivet - 2012

Citer dette

Cirelli, M., Moulin, E., Panci, P., Serpico, P. D., & Viana, A. (2012). Gamma ray constraints on decaying dark matter. Physical Review D, 86(8), 083506 . https://doi.org/10.1103/PhysRevD.86.083506
Cirelli, M. ; Moulin, E. ; Panci, P. ; Serpico, P. D. ; Viana, A. / Gamma ray constraints on decaying dark matter. I: Physical Review D. 2012 ; Bind 86, Nr. 8. s. 083506 .
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abstract = "We derive new bounds on decaying dark matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by H.E.S.S. We find that those from (i) are among the most stringent constraints currently available, for a large range of dark matter masses and a variety of decay modes, excluding half-lives up to similar to 10(26) to few 10(27) seconds. In particular, they rule out the interpretation in terms of decaying dark matter of the e(+/-) spectral features in PAMELA, Fermi and H.E.S.S., unless very conservative choices are adopted. We also discuss future prospects for CTA bounds from Fornax which, contrary to the present H.E.S.S. constraints of (ii), may allow for an interesting improvement and may become better than those from the current or future extragalactic Fermi data.",
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Cirelli, M, Moulin, E, Panci, P, Serpico, PD & Viana, A 2012, 'Gamma ray constraints on decaying dark matter', Physical Review D, bind 86, nr. 8, s. 083506 . https://doi.org/10.1103/PhysRevD.86.083506

Gamma ray constraints on decaying dark matter. / Cirelli, M.; Moulin, E.; Panci, P.; Serpico, P. D.; Viana, A.

I: Physical Review D, Bind 86, Nr. 8, 2012, s. 083506 .

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Gamma ray constraints on decaying dark matter

AU - Cirelli, M.

AU - Moulin, E.

AU - Panci, P.

AU - Serpico, P. D.

AU - Viana, A.

PY - 2012

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N2 - We derive new bounds on decaying dark matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by H.E.S.S. We find that those from (i) are among the most stringent constraints currently available, for a large range of dark matter masses and a variety of decay modes, excluding half-lives up to similar to 10(26) to few 10(27) seconds. In particular, they rule out the interpretation in terms of decaying dark matter of the e(+/-) spectral features in PAMELA, Fermi and H.E.S.S., unless very conservative choices are adopted. We also discuss future prospects for CTA bounds from Fornax which, contrary to the present H.E.S.S. constraints of (ii), may allow for an interesting improvement and may become better than those from the current or future extragalactic Fermi data.

AB - We derive new bounds on decaying dark matter from the gamma ray measurements of (i) the isotropic residual (extragalactic) background by Fermi and (ii) the Fornax galaxy cluster by H.E.S.S. We find that those from (i) are among the most stringent constraints currently available, for a large range of dark matter masses and a variety of decay modes, excluding half-lives up to similar to 10(26) to few 10(27) seconds. In particular, they rule out the interpretation in terms of decaying dark matter of the e(+/-) spectral features in PAMELA, Fermi and H.E.S.S., unless very conservative choices are adopted. We also discuss future prospects for CTA bounds from Fornax which, contrary to the present H.E.S.S. constraints of (ii), may allow for an interesting improvement and may become better than those from the current or future extragalactic Fermi data.

U2 - 10.1103/PhysRevD.86.083506

DO - 10.1103/PhysRevD.86.083506

M3 - Journal article

VL - 86

SP - 083506

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 8

ER -

Cirelli M, Moulin E, Panci P, Serpico PD, Viana A. Gamma ray constraints on decaying dark matter. Physical Review D. 2012;86(8): 083506 . https://doi.org/10.1103/PhysRevD.86.083506