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

来源：

ASTRONOMY & ASTROPHYSICS | 2024年 / 687卷

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

页数：11

共 92 条

[61] The hunt for extraterrestrial high-energy neutrino counterparts [J].