Help Privacy Policy Disclaimer
  Advanced SearchBrowse


  Search for dark matter signals towards a selection of recently-detected DES dwarf galaxy satellites of the Milky Way with H.E.S.S

H. E. S. S. Collaboration, Abdallah, H., Adam, R., Aharonian, F., Ait Benkhali, F., Angüner, E. O., et al. (2020). Search for dark matter signals towards a selection of recently-detected DES dwarf galaxy satellites of the Milky Way with H.E.S.S. Physical Review D, 102(6): 062001. doi:10.1103/PhysRevD.102.062001.

Item is


show Files
hide Files
2008.00688.pdf (Preprint), 3MB
File downloaded from arXiv at 2020-11-18 11:57
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
Copyright Info:




H. E. S. S. Collaboration, Author              
Abdallah, H., Author
Adam, R., Author
Aharonian, F.1, Author           
Ait Benkhali, F.1, Author           
Angüner, E. O., Author
Arakawa, M., Author
Arcaro, C., Author
Armand, C., Author
Armstrong, T., Author
Ashkar, H., Author
Backes, M., Author
Baghmanyan, V., Author
Barbosa Martins, V. , Author
Barnacka, A., Author
Barnard, M., Author
Becherini, Y., Author
Berge, D., Author
Bernlöhr, K.1, Author           
Böttcher, M., Author
Boisson, C., AuthorBolmont, J., AuthorBonnefoy, S., AuthorBreuhaus, M.1, Author           Bregeon, J., AuthorBrun, F., AuthorBrun, P., AuthorBryan, M., AuthorBüchele, M., AuthorBulik, T., AuthorBylund, T., AuthorCaroff, S., AuthorCarosi, A., AuthorCasanova, S.1, Author           Chand, T., AuthorChandra, S., AuthorChen, A., AuthorCotter, G., AuthorCuryło, M., AuthorDavids, I. D., AuthorDavies, J., AuthorDeil, C.1, Author           Devin, J., AuthordeWilt, P., AuthorDirson, L., AuthorDjannati-Ataï, A., AuthorDmytriiev, A., AuthorDonath, A.1, Author           Doroshenko, V., AuthorDyks, J., AuthorEgberts, K., AuthorEichhorn, F., AuthorEmery, G., AuthorErnenwein, J. -P., AuthorEschbach, S., AuthorFeijen, K., AuthorFegan, S., AuthorFiasson, A., AuthorFontaine, G., AuthorFunk, S., AuthorFüßling, M., AuthorGabici, S., AuthorGallant, Y. A., AuthorGiavitto, G., AuthorGiunti, L., AuthorGlawion, D., AuthorGlicenstein, J. F., AuthorGottschall, D., AuthorGrondin, M. -H., AuthorHahn, J., AuthorHaupt, M., AuthorHermann, G.1, Author           Hinton, J. A.1, Author           Hofmann, W.2, Author           Hoischen, C., AuthorHolch, T. L., AuthorHoller, M., AuthorHörbe, M., AuthorHorns, D., AuthorHuber, D., AuthorIwasaki, H., AuthorJamrozy, M., AuthorJankowsky, D., AuthorJankowsky, F., AuthorJardin-Blicq, A.1, Author           Joshi, V., AuthorJung-Richardt, I., AuthorKastendieck, M. A., AuthorKatarzyński, K., AuthorKatsuragawa, M., AuthorKatz, U., AuthorKhangulyan, D., AuthorKhélifi, B., AuthorKlepser, S., AuthorKluźniak, W., AuthorKomin, Nu., AuthorKonno, R., AuthorKosack, K., AuthorKostunin, D., AuthorKreter, M., AuthorLamanna, G., AuthorLemière, A., AuthorLemoine-Goumard, M., AuthorLenain, J. -P., AuthorLeser, E., AuthorLevy, C., AuthorLohse, T., AuthorLypova, I., AuthorMackey, J., AuthorMajumdar, J., AuthorMalyshev, D., AuthorMalyshev, D., AuthorMarandon, V.1, Author           Marchegiani, P., AuthorMarcowith, A., AuthorMares, A., AuthorMartì-Devesa, G., AuthorMarx, R.1, Author           Maurin, G., AuthorMeintjes, P. J., AuthorModerski, R., AuthorMohamed, M., AuthorMohrmann, L., AuthorMoore, C., AuthorMorris, P., AuthorMoulin, E., AuthorMuller, J., AuthorMurach, T., AuthorNakashima, K., AuthorNakashima, S., Authorde Naurois, M., AuthorNdiyavala, H., AuthorNiederwanger, F., AuthorNiemiec, J., AuthorOakes, L., AuthorO'Brien, P., AuthorOdaka, H., AuthorOhm, S., Authorde Ona Wilhelmi, E. , AuthorOstrowski, M., AuthorPanter, M.1, Author           Parsons, R. D., AuthorPeyaud, B., AuthorPiel, Q., AuthorPita, S., AuthorPoireau, V., AuthorNoel, A. Priyana, AuthorProkhorov, D. A., AuthorProkoph, H., AuthorPühlhofer, G., AuthorPunch, M., AuthorQuirrenbach, A., AuthorRaab, S., AuthorRauth, R., AuthorReimer, A., AuthorReimer, O., AuthorRemy, Q., AuthorRenaud, M., AuthorRieger, F., AuthorRinchiuso, L., AuthorRomoli, C., AuthorRowell, G., AuthorRudak, B., AuthorRuiz-Velasco, E., AuthorSahakian, V., AuthorSailer, S.1, Author           Saito, S., AuthorSanchez, D. A., AuthorSantangelo, A., AuthorSasaki, M., AuthorScalici, M., AuthorSchüssler, F., AuthorSchutter, H. M., AuthorSchwanke, U., AuthorSchwemmer, S., AuthorSeglar-Arroyo, M., AuthorSenniappan, M., AuthorSeyffert, A. S., AuthorShafi, N., AuthorShiningayamwe, K., AuthorSimoni, R., AuthorSinha, A., AuthorSol, H., AuthorSpecovius, A., AuthorSpencer, S., AuthorSpir-Jacob, M., AuthorStawarz, Ł., AuthorSteenkamp, R., AuthorStegmann, C., AuthorSteppa, C., AuthorTakahashi, T., AuthorTavernier, T., AuthorTaylor, A. M., AuthorTerrier, R., AuthorTiziani, D., AuthorTluczykont, M., AuthorTomankova, L., AuthorTrichard, C., AuthorTsirou, M., AuthorTsuji, N., AuthorTuffs, R.1, Author           Uchiyama, Y., Authorvan der Walt, D. J., Authorvan Eldik, C., Authorvan Rensburg, C., Authorvan Soelen, B., AuthorVasileiadis, G., AuthorVeh, J., AuthorVenter, C., AuthorViana, A., AuthorVincent, P., AuthorVink, J., AuthorVölk, H. J.3, Author           Vuillaume, T., AuthorWadiasingh, Z., AuthorWagner, S. J., AuthorWatson, J., AuthorWerner, F.1, Author           White, R.1, Author           Wierzcholska, A., AuthorYang, R.1, Author           Yoneda, H., AuthorZacharias, M., AuthorZanin, R.1, Author           Zargaryan, D., AuthorZdziarski, A. A., AuthorZech, A., AuthorZhu, S., AuthorZorn, J.1, Author           Żywucka, N., Author more..
1Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society, ou_2074298              
2Prof. Werner Hofmann, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_3188608              
3Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548              


Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 MPINP: HESS - Abteilung Hinton
 Abstract: Dwarf spheroidal galaxy satellites of the Milky Way are prime targets for
indirect detection of dark matter with gamma rays due to their proximity, high
dark matter content and absence of non-thermal emission processes. Recently,
the Dark Energy Survey (DES) revealed the existence of new ultra-faint dwarf
spheroidal galaxies in the southern-hemisphere sky, therefore ideally located
for ground-based observations with the imaging atmospheric Cherenkov telescope
array H.E.S.S. We present a search for very-high-energy ($E\gtrsim100$ GeV)
gamma-ray emission using H.E.S.S. observations carried out recently towards
Reticulum II, Tucana II, Tucana III, Tucana IV and Grus II satellites. No
significant very-high-energy gamma-ray excess is found from the observations on
any individual object nor in the combined analysis of all the datasets. Using
the most recent modeling of the dark matter distribution in the dwarf galaxy
halo, we compute for the first time on DES satellites individual and combined
constraints from Cherenkov telescope observations on the annihilation cross
section of dark matter particles in the form of Weakly Interacting Massive
Particles. The combined 95% C.L. observed upper limits reach $\langle \sigma v
\rangle \simeq 1 \times 10^{-23}$ cm$^3$s$^{-1}$ in the $W^+W^-$ channel and $4
\times 10^{-26}$ cm$^3$s$^{-1}$ in the $\gamma\gamma$ channels for a dark
matter mass of 1.5 TeV. The H.E.S.S. constraints well complement the results
from Fermi-LAT, HAWC, MAGIC and VERITAS and are currently the most stringent in
the $\gamma\gamma$ channels in the multi-GeV/multi-TeV mass range.


 Dates: 2020-08-032020-09-042020-09-02
 Publication Status: Published online
 Pages: 20 pages, 12 figures
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: arXiv: 2008.00688
DOI: 10.1103/PhysRevD.102.062001
 Degree: -



Legal Case


Project information


Source 1

Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 102 (6) Sequence Number: 062001 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258