VERITAS deep observations of the dwarf spheroidal galaxy Segue 1

Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Beilicke, M.; Benbow, W.; Bouvier, A.; Bradbury, S. M.; Buckley, J. H.; Bugaev, V.; Byrum, K.; Cannon, A.; Cesarini, A.; Christiansen, J. L.; Ciupik, L.; Collins-Hughes, E.; Connolly, Michael; Cui, Wei; Decerprit, G.; Dickherber, R.; Dumm, J.; Errando, M.; Falcone, A.; Feng, Q.; Ferrer, Francesc; Finley, J. P.; Finnegan, G.; Fortson, L.; Furniss, A.; Galante, N.; Gall, D.; Godambe, S.; Griffin, S.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Huan, Hao; Hughes, G.; Humensky, T. B.; Kaaret, Philip; Karlsson, N.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Lee, K.; Madhavan, A. S.; Maier, G.; Majumdar, P.; McArthur, S.; McCann, A.; Moriarty, P.; Mukherjee, R.; Ong, R. A.; Orr, M.; Otte, A. N.; Park, N.; Perkins, J. S.; Pohl, M.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, Luis; Reynolds, P. T.; Roache, E.; Rose, H. J.; Ruppel, J.; Saxon, D. B.; Schroedter, M.; Sembroski, G. H.; Entürk, G. D.; Skole, C.; Smith, A. W.; Staszak, D.; Telezhinsky, I.; Teić, G.; Theiling, M.; Thibadeau, S.; Tsurusaki, K.; Varlotta, A.; Vassiliev, V. V.; Vincent, S.; Vivier, M.; Wagner, R. G.; Wakely, S. P.; Ward, J. E.; Weekes, T. C.; Weinstein, A. J.R.; Weisgarber, T.; Williams, D. A.; Zitzer, B.

doi:10.1103/physrevd.85.062001

Cited by 99 publications

(110 citation statements)

References 100 publications

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“…VERITAS also provides lower limits to τ χ from ∼48 hours of Segue 1 observations [24] (albeit the already mentioned caveat regarding reliability of those results applies also in this case), excluding values below 10 24 -10 25 s (depending on the channel) for m χ ≃ 1-10 TeV. Contrary to the annihilation case, the H.E.S.S.…”

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 69%

“…[58] could lead to the τ χ lower limits of the order of ∼(10 24 -10 26 ) s for m χ between 1 and 20 TeV. Figure 14 shows the results of this work, assuming the 2-body decay of scalar DM [56]), and VERITAS (dotted lines, [24]). For the leptonic channels, µ + µ − and τ + τ − , also shown are the regions that allow fit to the PAMELA, Fermi -LAT and H.E.S.S.…”

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 83%

“…(assuming generic qq final state, [47]); and iii) ∼48 hours of the Segue 1 observations with VERITAS [24]. Note, however, that the VERITAS results have been questioned in reference [28], where it is discussed why the VERITAS limits could be over-constraining by a factor two or more.…”

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 99%

“…Over the last decade, a number of dSphs have been observed by the present generation of IACTs: MAGIC [17][18][19], H.E.S.S. [20][21][22] and VERITAS [23,24], as well as by the Large Area Telescope (LAT) on board the Fermi satellite [25].…”

Section: Introductionmentioning

confidence: 99%

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Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Aleksić

2016

Springer Theses

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Abstract. We present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range of the electromagnetic spectrum. We search this large data sample for signals of dark matter particles in the mass range between 100 GeV and 20 TeV. For this we use the full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral features, like those expected from dark matter annihilation or decay. In particular, we focus our search on gamma-rays produced from different final state Standard Model particles, annihilation with internal bremsstrahlung, monochromatic lines and box-shaped signals. Our results represent the most stringent constraints to the annihilation cross-section or decay lifetime obtained from observations of satellite galaxies, for masses above few hundred GeV. In particular, our strongest limit (95% confidence level) corresponds to a ∼500 GeV dark matter particle annihilating into τ + τ − , and is of order σ ann v ≃ 1.2×10 −24 cm 3 s −1 -a factor ∼40 above the σ ann v thermal value.

show abstract

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 69%

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 83%

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Aleksić

2016

Springer Theses

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“…This allows us to characterise the morphology of their sources and to observe regions where the dark matter particle density is expected to be large and to produce a sizeable flux. The Fermi-LAT space-borne telescope covers the GeV energy range whereas the ground based Cherenkov telescopes HESS [57], MAGIC [58], VERITAS [59] and HAWC [60] are sensitive to the TeV range. Since the density of dark matter particle is peaked in the center of the galaxy, the galactic center is one of the best targets to look for a dark matter signal.…”

Section: Jhep11(2017)132mentioning

confidence: 99%

Robustness of dark matter constraints and interplay with collider searches for New Physics

Arbey

Robbins

Mahmoudi

et al. 2017

J. High Energ. Phys.

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Abstract:We study the implications of dark matter searches, together with collider constraints, on the phenomenological MSSM with neutralino dark matter and focus on the consequences of the related uncertainties in some detail. We consider, inter alia, the latest results from AMS-02, Fermi-LAT and XENON1T. In particular, we examine the impact of the choice of the dark matter halo profile, as well as the propagation model for cosmic rays, for dark matter indirect detection and show that the constraints on the MSSM differ by one to two orders of magnitude depending on the astrophysical hypotheses. On the other hand, our limited knowledge of the local relic density in the vicinity of the Earth and the velocity of Earth in the dark matter halo leads to a factor 3 in the exclusion limits obtained by direct detection experiments. We identified the astrophysical models leading to the most conservative and the most stringent constraints and for each case studied the complementarities with the latest LHC measurements and limits from Higgs, SUSY and monojet searches. We show that combining all data from dark matter searches and colliders, a large fraction of our supersymmetric sample could be probed. Whereas the direct detection constraints are rather robust under the astrophysical assumptions, the uncertainties related to indirect detection can have an important impact on the number of the excluded points.

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Searching Dark Matter: The Quest for the Missing Mass

Kluck

2015

Production Yield of Muon-Induced Neutrons in Lead

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VERITAS deep observations of the dwarf spheroidal galaxy Segue 1

Cited by 99 publications

References 100 publications

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Robustness of dark matter constraints and interplay with collider searches for New Physics

Searching Dark Matter: The Quest for the Missing Mass

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