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Volumn 326, Issue 5956, 2009, Pages 1080-1082

Detection of gamma rays from a starburst galaxy

(170)  Acero, F a   Aharonian, F b,m   Akhperjanian, A G c   Anton, G o   De Barres Almeida, U i   Bazer Bachi, A R d   Becherini, Y m   Behera, B n   Bernlohr K b,f   Bochow, A b   Boisson, C g   Bolmont, J r   Borrel, V d   Brucker, J o   Brun, F r   Brun, P h   Buhler R b   Bulik, T ab   Busching I j   Boutelier, T p   more..

d CNRS   (France)

Author keywords

[No Author keywords available]

Indexed keywords

COSMIC RAY; GAMMA RAY RADIATION; TRACER;

EID: 70450182967     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1178826     Document Type: Article
Times cited : (239)

References (35)
  • 7
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    • The following description is based on a distance of 2.6 Mpc; the final conclusions are, however, independen of distance.
    • The following description is based on a distance of 2.6 Mpc; the final conclusions are, however, independen of distance.
  • 23
    • 27144552291 scopus 로고    scopus 로고
    • H.E.S.S. Collaboration.
    • F. Aharonian et al., H.E.S.S. Collaboration. Astron. Astrophys. 442, 177 (2005).
    • (2005) Astron. Astrophys. , vol.442 , pp. 177
    • Aharonian, F.1
  • 24
    • 33846509827 scopus 로고    scopus 로고
    • CANGAROO Collaboration.
    • C. Itoh et al., CANGAROO Collaboration. Astron. Astrophys. 462, 67 (2007).
    • (2007) Astron. Astrophys. , vol.462 , pp. 67
    • Itoh, C.1
  • 25
    • 70450179049 scopus 로고    scopus 로고
    • note
    • The Model Analysis is based on a comparison and fit of observed air shower images with a precomputed library of images (31); another analysis technique, based on a machine learning algorithm called boosted decision trees (BDT) (32), was used to verify the results. It was trained with simulated gamma rays and with real cosmic-ray data from background fields (33). Both algorithms yield an improvement by a factor 1.5 to 1.7 in the statistical significance of faint sources compared with the standard image analysis (26), as verified with a number of other gamma-ray sources. The Model Analysis result is found to be consistent with the one obtained with the BDT analysis. Details are given in the SOM.
  • 26
    • 33749987730 scopus 로고    scopus 로고
    • H.E.S.S. Collaboration.
    • F. Aharonian et al., H.E.S.S. Collaboration. Astron. Astrophys. 457, 899 (2006).
    • (2006) Astron. Astrophys. , vol.457 , pp. 899
    • Aharonian, F.1
  • 28
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    • H.E.S.S. Collaboration.
    • F. Aharonian et al., H.E.S.S. Collaboration. Nature 439, 695 (2006).
    • (2006) Nature , vol.439 , pp. 695
    • Aharonian, F.1
  • 35
    • 70450188429 scopus 로고    scopus 로고
    • note
    • The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the German Ministry for Education and Research (BMBF), the Max Planck Society, the French Ministry for Research, the CNRS-IN2P3 and the Astropartiele Interdisciplinary Programme of the CNRS, the UK Science and Technology Facilities Council (STFC), the IPNP of Charles University, the Polish Ministry of Science and Higher Education, the South African Department of Science and Technology and National Research Foundation, and the University of Namibia. U. Barres de Almeida is supported by the CAPES Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Foundation, Ministry of Education of Brazil. The European Associated Laboratory for Gamma-Ray Astronomy is jointly supported by CNRS and Max-Planck-Gesellschaft. We appreciate the excellent work of the technical support staff in Berlin, Durham, Hamburg, Heidelberg, Palaiseau, Paris, Saclay, and Namibia in the construction and operation of the equipment.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.