H.E.S.S. OBSERVATIONS OF THE GLOBULAR CLUSTERS NGC 6388 AND M15 AND SEARCH FOR A DARK MATTER SIGNAL
H.E.S.S. OBSERVATIONS OF THE GLOBULAR CLUSTERS NGC 6388 AND M15 AND SEARCH FOR A DARK MATTER SIGNAL
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DOI：
10.1088/0004-637x/735/1/12
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发表时间：
2011-04
期刊：
影响因子：
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通讯作者：
H. C. A. Abramowski;F. Acero;F. Aharonian;A. Akhperjanian;G. Anton;A. Balzer;A. Barnacka;U. D. Almeida;A. R. Bazer-Bachi;Y. Becherini;J. Becker;B. Behera;K. Bernlohr;A. Bochow;C. Boisson;J. Bolmont;P. Bordas;V. Borrel;J. Brucker;F. Brun;P. Brun;T. Bulik;I. Busching;S. Carrigan;S. Casanova;M. Cerruti;P. Chadwick;A. Charbonnier;R. Chaves;A. Cheesebrough;L. Chounet;A. Clapson;Nicolas Produit;J. Conrad;M. Dalton;M. Daniel;I. Davids;B. Degrange;C. Deil;H. Dickinson;A. Djannati-Atai;W. Domainko;L. Drury;F. Dubois;G. Dubus;J. Dyks;M. Dyrda;K. Egberts;P. Eger;P. Espigat;L. Fallon;C. Farnier;S. Fegan;F. Feinstein;M. V. Fernandes;A. Fiasson;G. Fontaine;A. Forster;M. Fussling;Y. Gallant;H. Gast;L. G'erard;D. Gerbig;B. Giebels;J. Glicenstein;B. Gluck;P. Goret;D. Goring;S. Haffner;J. Hague;D. Hampf;M. Hauser;S. Heinz;G. Heinzelmann;G. Henri;G. Hermann;J. Hinton;A. Hoffmann;W. Hofmann;P. Hofverberg;M. Holler;D. Horns;A. Jacholkowska;O. D. Jager;C. Jahn;M. Jamrozy;I. Jung;M. Kastendieck;K. Katarzyński;U. Katz;S. Kaufmann;D. Keogh;D. Khangulyan;B. Kh'elifi;D. Klochkov;W. Kluźniak;T. Kneiske;N. Komin;K. Kosack;R. Kossakowski;H. Laffon;G. Lamanna;D. Lennarz;T. Lohse;A. Lopatin;C.-C. Lu-C.;V. Marandon;A. Marcowith;J. Masbou;D. Maurin;N. Maxted;T. Mccomb;M. C. Medina;J. M'ehault;R. Moderski;E. Moulin;C. Naumann;M. Naumann-Godo;M. Naurois;D. Nedbal;D. Nekrassov;N. Nguyen;B. Nicholas;J. Niemiec;S. Nolan;S. Ohm;J-P. Olive;E. Wilhelmi;B. Opitz;M. Ostrowski;M. Panter;M. Arribas;G. Pedaletti;G. Pelletier;P. Petrucci;S. Pita;G. Puhlhofer;M. Punch;A. Quirrenbach;M. Raue;S. Rayner;A. Reimer;O. Reimer;M. Renaud;R. Reyes;F. Rieger;J. Ripken;L. Rob;S. Rosier-Lees;G. Rowell;B. Rudak;C. Rulten;J. Ruppel;F. Ryde;V. Sahakian;A. Santangelo;R. Schlickeiser;F. Schock;A. Schulz;U. Schwanke;S. Schwarzburg;S. Schwemmer;M. Sikora;J. Skilton;H. Sol;G. Spengle;L. Stawarz;R. Steenkamp;C. Stegmann;F. Stinzing;K. Stycz;I. Sushch;A. Szóstek;J. Tavernet;R. Terrier;O. Tibolla3;M. Tluczykont;K. Valerius;C. Eldik;G. Vasileiadis;C. Venter;J. Vialle;A. Viana;P. Vincent;M. Vivier;H. Volk;F. Volpe;S. Vorobiov;M. Vorster;S. Wagner;M. Ward;A. Wierzcholska;M. Zacharias;A. Zajczyk;A. Zdziarski;A. Zech;H. Zechlin
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文献类型：
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作者：
H. C. A. Abramowski;F. Acero;F. Aharonian;A. Akhperjanian;G. Anton;A. Balzer;A. Barnacka;U. D. Almeida;A. R. Bazer-Bachi;Y. Becherini;J. Becker;B. Behera;K. Bernlohr;A. Bochow;C. Boisson;J. Bolmont;P. Bordas;V. Borrel;J. Brucker;F. Brun;P. Brun;T. Bulik;I. Busching;S. Carrigan;S. Casanova;M. Cerruti;P. Chadwick;A. Charbonnier;R. Chaves;A. Cheesebrough;L. Chounet;A. Clapson;Nicolas Produit;J. Conrad;M. Dalton;M. Daniel;I. Davids;B. Degrange;C. Deil;H. Dickinson;A. Djannati-Atai;W. Domainko;L. Drury;F. Dubois;G. Dubus;J. Dyks;M. Dyrda;K. Egberts;P. Eger;P. Espigat;L. Fallon;C. Farnier;S. Fegan;F. Feinstein;M. V. Fernandes;A. Fiasson;G. Fontaine;A. Forster;M. Fussling;Y. Gallant;H. Gast;L. G'erard;D. Gerbig;B. Giebels;J. Glicenstein;B. Gluck;P. Goret;D. Goring;S. Haffner;J. Hague;D. Hampf;M. Hauser;S. Heinz;G. Heinzelmann;G. Henri;G. Hermann;J. Hinton;A. Hoffmann;W. Hofmann;P. Hofverberg;M. Holler;D. Horns;A. Jacholkowska;O. D. Jager;C. Jahn;M. Jamrozy;I. Jung;M. Kastendieck;K. Katarzyński;U. Katz;S. Kaufmann;D. Keogh;D. Khangulyan;B. Kh'elifi;D. Klochkov;W. Kluźniak;T. Kneiske;N. Komin;K. Kosack;R. Kossakowski;H. Laffon;G. Lamanna;D. Lennarz;T. Lohse;A. Lopatin;C.-C. Lu-C.;V. Marandon;A. Marcowith;J. Masbou;D. Maurin;N. Maxted;T. Mccomb;M. C. Medina;J. M'ehault;R. Moderski;E. Moulin;C. Naumann;M. Naumann-Godo;M. Naurois;D. Nedbal;D. Nekrassov;N. Nguyen;B. Nicholas;J. Niemiec;S. Nolan;S. Ohm;J-P. Olive;E. Wilhelmi;B. Opitz;M. Ostrowski;M. Panter;M. Arribas;G. Pedaletti;G. Pelletier;P. Petrucci;S. Pita;G. Puhlhofer;M. Punch;A. Quirrenbach;M. Raue;S. Rayner;A. Reimer;O. Reimer;M. Renaud;R. Reyes;F. Rieger;J. Ripken;L. Rob;S. Rosier-Lees;G. Rowell;B. Rudak;C. Rulten;J. Ruppel;F. Ryde;V. Sahakian;A. Santangelo;R. Schlickeiser;F. Schock;A. Schulz;U. Schwanke;S. Schwarzburg;S. Schwemmer;M. Sikora;J. Skilton;H. Sol;G. Spengle;L. Stawarz;R. Steenkamp;C. Stegmann;F. Stinzing;K. Stycz;I. Sushch;A. Szóstek;J. Tavernet;R. Terrier;O. Tibolla3;M. Tluczykont;K. Valerius;C. Eldik;G. Vasileiadis;C. Venter;J. Vialle;A. Viana;P. Vincent;M. Vivier;H. Volk;F. Volpe;S. Vorobiov;M. Vorster;S. Wagner;M. Ward;A. Wierzcholska;M. Zacharias;A. Zajczyk;A. Zdziarski;A. Zech;H. Zechlin
利用切伦科夫望远镜的高能立体系统阵列对球状星团NGC6388和M15分别进行了27.2小时和15.2小时的观测。在NGC6388和M15的标称目标位置没有发现伽马射线信号。在原始形成情景中，GC是在暗物质(DM)晕中形成的，DM可能仍然存在于GC以重子为主的环境中。这开启了观察DM自湮灭信号的可能性。GCS NGC6388和M15的Dm含量模拟考虑了在GCNGC6388和M15演化过程中可能影响Dm分布的天体物理过程：重子对Dm的绝热收缩，Dm晕中黑洞的绝热生长，以及恒星对Dm的动力学加热。对于这些DM晕，导出了DM粒子速度加权湮没截面上95%的置信度排除极限。在TeV范围内，对于NGC6388和M15，速度加权湮没截面的极限分别是10−25cm3 S−1能级和几个10−24cm3S−1能级。
Observations of the globular clusters (GCs) NGC 6388 and M15 were carried out by the High Energy Stereoscopic System array of Cherenkov telescopes for a live time of 27.2 and 15.2 hr, respectively. No gamma-ray signal is found at the nominal target position of NGC 6388 and M15. In the primordial formation scenario, GCs are formed in a dark matter (DM) halo and DM could still be present in the baryon-dominated environment of GCs. This opens the possibility of observing a DM self-annihilation signal. The DM content of the GCs NGC 6388 and M15 is modeled taking into account the astrophysical processes that can be expected to influence the DM distribution during the evolution of the GC: the adiabatic contraction of DM by baryons, the adiabatic growth of a black hole in the DM halo, and the kinetic heating of DM by stars. Ninety-five percent confidence level exclusion limits on the DM particle velocity-weighted annihilation cross section are derived for these DM halos. In the TeV range, the limits on the velocity-weighted annihilation cross section are derived at the 10−25 cm3 s−1 level and a few 10−24 cm3 s−1 for NGC 6388 and M15, respectively.