Fermi-LAT follow-up observations in seven years of real-time high-energy neutrino alerts

被引:2
作者
Garrappa, S. [1 ,2 ]
Buson, S. [3 ]
Sinapius, J. [4 ]
Franckowiak, A. [2 ]
Liodakis, I [5 ]
Bartolini, C. [6 ,7 ]
Giroletti, M. [8 ]
Nanci, C. [8 ,9 ]
Principe, G. [8 ,10 ]
Venters, T. M. [11 ]
机构
[1] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel
[2] Ruhr Univ Bochum, Astron Inst AIRUB, Fak Phys & Astron, D-44780 Bochum, Germany
[3] Univ Wurzburg, Inst Th Phys & Astrophys, Emil Fischer Str 31, D-97074 Wurzburg, Germany
[4] Deutsch Elektronen Synchrotron DESY, Platanenallee 6, D-157387 Zeuthen, Germany
[5] Univ Turku, Finnish Ctr Astron ESO, Turku 20014, Finland
[6] Univ Trento, Dipartimento Fis, I-38123 Trento, Italy
[7] INFN Sez Bari, I-70125 Bari, Italy
[8] Ist Nazl Astrofis, Ist Radioastron IRA, Via Gobetti 101, I-40129 Bologna, Italy
[9] Univ Bologna, Dipartimento Fis & Astron, Via Gobetti 93-2, I-40129 Bologna, Italy
[10] Univ Trieste, INFN, Dipartimento Fis, Sez Trieste, I-34127 Trieste, Italy
[11] NASA Goddard Space Flight Ctr, Astrophys Sci Div, Greenbelt, MD 20771 USA
基金
瑞典研究理事会; 欧洲研究理事会; 美国国家航空航天局;
关键词
astroparticle physics; neutrinos; galaxies: active; gamma rays: galaxies; LARGE-AREA TELESCOPE; BLAZAR PKS 0735+178; ICECUBE NEUTRINOS; EMISSION; MULTIWAVELENGTH; NUCLEI; CATALOG; ASTROPY; SEARCH; ORIGIN;
D O I
10.1051/0004-6361/202449221
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The realtime program for high-energy neutrino track events detected by the IceCube South Pole Neutrino Observatory releases alerts to the astronomical community with the goal of identifying electromagnetic counterparts to astrophysical neutrinos. Gamma-ray observations from the Fermi-Large Area Telescope (LAT) enabled the identification of the flaring gamma-ray blazar TXS 0506+056 as a likely counterpart to the neutrino event IC-170922A. By continuously monitoring the gamma-ray sky, Fermi-LAT plays a key role in the identification of candidate counterparts to realtime neutrino alerts. In this paper, we present the Fermi-LAT strategy for following up high-energy neutrino alerts applied to seven years of IceCube data. Right after receiving an alert, a search is performed in order to identify gamma-ray activity from known and newly detected sources that are positionally consistent with the neutrino localization. In this work, we study the population of blazars found in coincidence with high-energy neutrinos and compare them to the full population of gamma-ray blazars detected by Fermi-LAT. We also evaluate the relationship between the neutrino and gamma-ray luminosities, finding different trends between the two blazar classes BL Lacs and flat-spectrum radio quasars.
引用
收藏
页数:11
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