Current Language EN
English English Türkçe Türkçe Español Español Português Português Pусский Pусский Filipino Filipino Tiếng Việt Tiếng Việt हिन्दी हिन्दी العربية العربية বাংলা বাংলা Deutsch Deutsch 中文 中文

Searches for dark matter annihilation signatures in the Segue 1 satellite galaxy with the MAGIC-I telescope

J. Aleksić,E.A. Alvarez,L.A. Antonelli,P. Antoranz,M. Asensio,M. Backes,J.A. Barrio,D. Bastieri,J. Becerra González,W. Bednarek,A. Berdyugin,K. Berger,E. Bernardini,A. Biland,O. Blanch,R.K. Bock,A. Boller,G. Bonnoli,D. Borla Tridon,I. Braun,T. Bretz,A. Cañellas,E. Carmona,A. Carosi,P. Colin,E. Colombo,J. L. Contreras,J. Cortina,L. Cossio,S. Covino,F. Dazzi,A. De Angelis,E. De Cea Del Pozo,B. De Lotto,C. Delgado Mendez,A. Diago Ortega,M. Doert,A. Domínguez,D. Dominis Prester,D. Dorner,M. Doro,D. Elsaesser,D. Ferenc,M.V. Fonseca,L. Font,C. Fruck,R.J. García López,M. Garczarczyk,D. Garrido,G. Giavitto,N. Godinović,D. Hadasch,D. Häfner,A. Herrero,D. Hildebrand,D. Höhne-Mönch,J. Hose,D. Hrupec,B. Huber,T. Jogler,S. Klepser,T. Krähenbühl,J. Krause,A. La Barbera,D. Lelas,E. Leonardo,E. Lindfors,S. Lombardi,M. López,E. Lorenz,M. Makariev,G. Maneva,N. Mankuzhiyil,K. Mannheim,L. Maraschi,M. Mariotti,M. Martínez,D. Mazin,M. Meucci,J. M. Miranda,R. Mirzoyan,H. Miyamoto,J. Moldón,A. Moralejo,P. Munar-Androver,D. Nieto,K. Nilsson,R. Orito,I. Oya,S. Paiano,D. Paneque,R. Paoletti,S. Pardo,J.M. Paredes,S. Partini,M. Pasanen,F. Pauss,M.A. Perez-Torres,M. Persic,L. Peruzzo,M. Pilia,J. Pochon,F. Prada,P.G. Prada Moroni,E. Prandini,I. Puljak,I. Reichardt,R. Reinthal,W. Rhode,M. Ribó,J. Rico,S. Rügamer,A. Saggion,K. Saito,T. Y. Saito,M. Salvati,K. Satalecka,V. Scalzotto,V. Scapin,C. Schultz,T. Schweizer,M. Shayduk,S. N. Shore,A. Sillanpää,J. Sitarek,D. Sobczynska,F. Spanier,S. Spiro,A. Stamerra,B. Steinke,J. Storz,N. Strah,T. Surić,L. Takalo,H. Takami,F. Tavecchio,P. Temnikov,T. Terzić,D. Tescaro,M. Teshima,M. Thom,O. Tibolla,D.F. Torres,A. Treves,H. Vankov,P. Vogler,R. M. Wagner,Q. Weitzel,V. Zabalza,F. Zandanel,R. Zanin,M. Fornasa,R. Essig,N. Sehgal,L.E. Strigari;J. Aleksić;E.A. Alvarez;L.A. Antonelli;P. Antoranz;M. Asensio;M. Backes;J.A. Barrio;D. Bastieri;J. Becerra González;W. Bednarek;A. Berdyugin;K. Berger;E. Bernardini;A. Biland;O. Blanch;R.K. Bock;A. Boller;G. Bonnoli;D. Borla Tridon;I. Braun;T. Bretz;A. Cañellas;E. Carmona;A. Carosi;P. Colin;E. Colombo;J. L. Contreras;J. Cortina;L. Cossio;S. Covino;F. Dazzi;A. De Angelis;E. De Cea Del Pozo;B. De Lotto;C. Delgado Mendez;A. Diago Ortega;M. Doert;A. Domínguez;D. Dominis Prester;D. Dorner;M. Doro;D. Elsaesser;D. Ferenc;M.V. Fonseca;L. Font;C. Fruck;R.J. García López;M. Garczarczyk;D. Garrido;G. Giavitto;N. Godinović;D. Hadasch;D. Häfner;A. Herrero;D. Hildebrand;D. Höhne-Mönch;J. Hose;D. Hrupec;B. Huber;T. Jogler;S. Klepser;T. Krähenbühl;J. Krause;A. La Barbera;D. Lelas;E. Leonardo;E. Lindfors;S. Lombardi;M. López;E. Lorenz;M. Makariev;G. Maneva;N. Mankuzhiyil;K. Mannheim;L. Maraschi;M. Mariotti;M. Martínez;D. Mazin;M. Meucci;J. M. Miranda;R. Mirzoyan;H. Miyamoto;J. Moldón;A. Moralejo;P. Munar-Androver;D. Nieto;K. Nilsson;R. Orito;I. Oya;S. Paiano;D. Paneque;R. Paoletti;S. Pardo;J.M. Paredes;S. Partini;M. Pasanen;F. Pauss;M.A. Perez-Torres;M. Persic;L. Peruzzo;M. Pilia;J. Pochon;F. Prada;P.G. Prada Moroni;E. Prandini;I. Puljak;I. Reichardt;R. Reinthal;W. Rhode;M. Ribó;J. Rico;S. Rügamer;A. Saggion;K. Saito;T. Y. Saito;M. Salvati;K. Satalecka;V. Scalzotto;V. Scapin;C. Schultz;T. Schweizer;M. Shayduk;S. N. Shore;A. Sillanpää;J. Sitarek;D. Sobczynska;F. Spanier;S. Spiro;A. Stamerra;B. Steinke;J. Storz;N. Strah;T. Surić;L. Takalo;H. Takami;F. Tavecchio;P. Temnikov;T. Terzić;D. Tescaro;M. Teshima;M. Thom;O. Tibolla;D.F. Torres;A. Treves;H. Vankov;P. Vogler;R. M. Wagner;Q. Weitzel;V. Zabalza;F. Zandanel;R. Zanin;M. Fornasa;R. Essig;N. Sehgal;L.E. Strigari;
journal of cosmology and astroparticle physics 2011 Vol. 2011 pp. 035-
240
strigari2011journalsearches

Abstract

We report the results of the observation of the nearby satellite galaxy Segue 1 performed by the MAGIC-I ground-based gamma-ray telescope between November 2008 and March 2009 for a total of 43.2 hours. No significant gamma-ray emission was found above the background. Differential upper limits on the gamma-ray flux are derived assuming various power-law slopes for the possible emission spectrum. Integral upper limits are also calculated for several power-law spectra and for different energy thresholds. The values are of the order of 10−11 ph cm−2 s−1 above 100 GeV and 10−12 ph cm−2 s−1 above 200 GeV. Segue 1 is currently considered one of the most interesting targets for indirect dark matter searches. In these terms, the upper limits have been also interpreted in the context of annihilating dark matter particles. For such purpose, we performed a grid scan over a reasonable portion of the parameter space for the minimal SuperGravity model and computed the flux upper limit for each point separately, taking fully into account the peculiar spectral features of each model. We found that in order to match the experimental upper limits with the model predictions, a minimum flux boost of 103 is required, and that the upper limits are quite dependent on the shape of the gamma-ray energy spectrum predicted by each specific model. Finally we compared the upper limits with the predictions of some dark matter models able to explain the PAMELA rise in the positron ratio, finding that Segue 1 data are in tension with the dark matter explanation of the PAMELA spectrum in the case of a dark matter candidate annihilating into τ+τ−. A complete exclusion however is not possible due to the uncertainties in the Segue 1 astrophysical factor.

Keywords

spectrum particle power law dark matter gamma ray supergravity magic parameter space fermi dwarf galaxies emission spectrum dark matter halo

Access

DOI:
10.1088/1475-7516/2011/06/035
URL:
https://sciprofiles.com/publication/view/a66466028...

Citation

ID: 269354
Ref Key: strigari2011journalsearches
Use this key to autocite in SciMatic or Thesis Manager

References

References

No Bibliography

Blockchain Verification

Account:
NFT Contract Address:
0x95644003c57E6F55A65596E3D9Eac6813e3566dA
Article ID:
269354
Unique Identifier:
10.1088/1475-7516/2011/06/035
Network:
Scimatic Chain (ID: 481)
Blockchain Readiness Checklist
Authors
Abstract
Journal Name
Year
Title
5/5
Creates 1,000,000 NFT tokens for this article
Token Features:
  • ERC-1155 Standard NFT
  • 1 Million Supply per Article
  • Transferable via MetaMask
  • Permanent Blockchain Record
Blockchain QR Code
Scan with Saymatik Web3.0 Wallet
Gas fees required in SCI Coins
Buy SCI

Saymatik Web3.0 Wallet

Google Play
App Store