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arXiv 1111.3473astro-ph.HE
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用ANTARES望远镜探测Gamma-Ray耀变体的中微子辐射

Search for Neutrino Emission from Gamma-Ray Flaring Blazars with the ANTARES Telescope

S. Adrián-Martínez, I. Al Samarai, A. Albert, M. André, M. Anghinolfi, G. Anton, S. Anvar, M. Ardid, T. Astraatmadja, J-J. Aubert, B. Baret, S. Basa, V. Bertin,… 展开作者

S. Adrián-Martínez, I. Al Samarai, A. Albert, M. André, M. Anghinolfi, G. Anton, S. Anvar, M. Ardid, T. Astraatmadja, J-J. Aubert, B. Baret, S. Basa, V. Bertin, S. Biagi, C. Bigongiari, C. Bogazzi, M. Bou-Cabo, B. Bouhou, M. C. Bouwhuis, J. Brunner, J. Busto, F. Camarena, A. Capone, C. Cârloganu, G. Carminati, J. Carr, S. Cecchini, Z. Charif, Ph. Charvis, T. Chiarusi, M. Circella, L. Core, H. Costantini, P. Coyle, A. Creusot, C. Curtil, G. De Bonis, M. P. Decowski, I. Dekeyser, A. Deschamps, C. Distefano, C. Donzaud, D. Dornic, Q. Dorosti, D. Drouhin, T. Eberl, U. Emanuele, A. Enzenhöfer, J-P. Ernenwein, S. Escoffier, K. Fehn, P. Fermani, M. Ferri, S. Ferry, V. Flaminio, F. Folger, U. Fritsch, J-L. Fuda, S. Galatà, P. Gay, K. Geyer, G. Giacomelli, V. Giordano, J. P. Gómez-González, K. Graf, G. Guillard, G. Halladjian, G. Hallewell, H. van Haren, J. Hartman, A. J. Heijboer, Y. Hello, J. J. Hernández-Rey, B. Herold, J. Hößl, C. C. Hsu, M. de Jong, M. Kadler, O. Kalekin, A. Kappes, U. Katz, O. Kavatsyuk, P. Kooijman, C. Kopper, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, G. Lambard, G. Larosa, D. Lattuada, D. Lefèvre, G. Lim, D. Lo Presti, H. Loehner, S. Loucatos, F. Louis, S. Mangano, M. Marcelin, A. Margiotta, J. A. Martínez-Mora, A. Meli, T. Montaruli, N. Morganti, L. Moscoso, H. Motz, M. Neff, E. Nezri, D. Palioselitis, G. E. Păvălaş, K. Payet, P. Payre, J. Petrovic, P. Piattelli, N. Picot-Clemente, V. Popa, T. Pradier, E. Presani, C. Racca, C. Reed, G. Riccobene, C. Richardt, R. Richter, C. Rivière, A. Robert, K. Roensch, A. Rostovtsev, J. Ruiz-Rivas, M. Rujoiu, G. V. Russo, F. Salesa, D. F. E. Samtleben, P. Sapienza, F. Schöck, J-P. Schuller, F. Schüssler, T. Seitz, R. Shanidze, F. Simeone, A. Spies, M. Spurio, J. M. Steijger, Th. Stolarczyk, A. Sánchez-Losa, M. Taiuti, C. Tamburini, S. Toscano, B. Vallage, C. Vallée, V. Van Elewyck, G. Vannoni, M. Vecchi, P. Vernin, E. Visser, S. Wagner, G. Wijnker, J. Wilms, E. de Wolf, H. Yepes, D. Zaborov, J. D. Zornoza, J. Zúñiga

摘要:

ANTARES望远镜非常适合探测天体物理瞬态源产生的中微子,因为它可以以高占空比随时观测整个半球的天空。射电巨响的活动星系核,其喷流几乎直接指向观测者,即所谓的耀变体,是特别有吸引力的潜在中微子点源。费米卫星上的全天空监视器LAT探测天空中任何给定的伽马射线明亮耀变体的变化,时间尺度为数小时至数月。假设强子模型,伽马射线和中微子通量之间的强相关性是预期的。在假设的中微子产生期上选择一个狭窄的时间窗口可以显著降低本底。将基于似然比最小化的未分组方法应用于2008年收集的数据子样本(61天生存时间)。通过在活动星系核光变曲线的高态期间搜索中微子,对这些源的灵敏度相对于标准的时间积分点源搜索提高了约2倍。本文介绍了寻找与十个明亮的、可变的费米源有关的中微子的初步结果。

英文摘要:

The ANTARES telescope is well-suited to detect neutrinos produced in astrophysical transient sources as it can observe a full hemisphere of the sky at all times with a high duty cycle. Radio-loud active galactic nuclei with jets pointing almost directly towards the observer, the so-called blazars, are particularly attractive potential neutrino point sources. The all-sky monitor LAT on board the Fermi satellite probes the variability of any given gamma-ray bright blazar in the sky on time scales of hours to months. Assuming hadronic models, a strong correlation between the gamma-ray and the neutrino fluxes is expected. Selecting a narrow time window on the assumed neutrino production period can significantly reduce the background. An unbinned method based on the minimization of a likelihood ratio was applied to a subsample of data collected in 2008 (61 days live time). By searching for neutrinos during the high state periods of the AGN light curve, the sensitivity to these sources was improved by about a factor of two with respect to a standard time-integrated point source search. First results on the search for neutrinos associated with ten bright and variable Fermi sources are presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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