2024A&A...687A..59G

Query : 2024A&A...687A..59G

2024A&A...687A..59G - Astronomy and Astrophysics, volume 687A59 (2024/7-1)

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

GARRAPPA S., BUSON S., SINAPIUS J., FRANCKOWIAK A., LIODAKIS I., BARTOLINI C., GIROLETTI M., NANCI C., PRINCIPE G. and VENTERS T.M.

Abstract (from CDS):

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.

Abstract Copyright: © The Authors 2024

Journal keyword(s): astroparticle physics - neutrinos - galaxies: active - gamma rays: galaxies

Simbad objects: 109

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Number of rows : 109
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 AT20G J003007-000007 BLL 00 30 07.8882351984 -00 00 07.271873172           ~ 12 2
2 Fermi J0030.2+0005 gam 00 30.2 +00 05           ~ 2 0
3 IceCube-230401A ev 00 32.7 +01 56           ~ 2 0
4 1RXS J012712.6+032250 BLL 01 27 13.9561096712 +03 23 00.587171321           ~ 39 0
5 IceCube-190629A ev 01 56.5 +84 34           ~ 9 0
6 NVSS J020242+313212 BLL 02 02 42.0614629895 +31 32 10.984333971           ~ 8 1
7 Fermi J0202.8+3132 gam 02 02.8 +31 33           ~ 2 0
8 4FGL J0203.9+8120 gam 02 03 58.6 +81 20 05           ~ 5 0
9 IceCube-200614A ev 02 15.4 +31 37           ~ 13 0
10 3FGL J0228.5+8213 Bz? 02 28 07.3 +82 08 36           ~ 17 0
11 M 77 Sy2 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4897 2
12 IceCube-161103A ev 02 43.3 +12 34           ~ 12 0
13 ICRF J024445.6+132007 Bla 02 44 45.69332807 +13 20 07.2213396           ~ 41 1
14 IceCube-170824A ev 02 53.4 +12 11           ~ 4 0
15 IceCube-211125A ev 02 54.4 +22 35           ~ 19 0
16 87GB 025515.9+201804 BLL 02 58 07.3086122544 +20 30 01.589316804       18.4   ~ 50 1
17 IceCube-191231A ev 03 13.9 +20 07           ~ 16 0
18 Fermi J0320.2+2243 ev 03 20.2 +22 44           ~ 1 0
19 IceCube-200911A ev 03 24.4 +38 07           ~ 15 0
20 9Y-MST J0420-3744 BLL 04 20 25.07 -37 44 46.8           ~ 39 1
21 IceCube-190504A ev 04 23 08.8 -37 26 35           ~ 18 0
22 4FGL J0436.2-0038 Bz? 04 36 12.1 -00 38 49           ~ 14 0
23 IceCube-220918A ev 05 00.6 +03 35           ~ 7 0
24 Fermi J0502.5+0037 gam 05 02.5 +00 37           ~ 4 0
25 NVSS J050650+032401 BLL 05 06 50.1481553527 +03 23 58.762381653           ~ 29 1
26 PMN J0509+0541 BLL 05 09 25.9644373872 +05 41 35.333820420 15.32 14.95 14.78 15.12   ~ 589 2
27 IceCube-161117A ev 05 17.6 +02 45           ~ 4 0
28 CLASS J060458.4179+000043.362 BLL 06 04 58.4179 +00 00 43.362           ~ 33 1
29 Fermi J0610.5+0946 gam 06 10 35 +09 46.9           ~ 2 0
30 IceCube-130627A ev 06 13.7 +14 01           ~ 7 0
31 IceCube-201114A ev 06 57.8 +06 23           ~ 33 0
32 NVSS J065844+063711 BLL 06 58 45.0238915922 +06 37 11.484056767           ~ 49 1
33 IceCube-211208A ev 07 38.1 +15 34           ~ 31 0
34 QSO J0738+1742 BLL 07 38 07.39375312 +17 42 18.9981506   16.76 16.22 15.78   ~ 1045 1
35 IceCube-181121A ev 08 30.1 +35 32           ~ 4 0
36 87GB 083633.2+355046 BLL 08 39 43.3631684856 +35 40 01.391266164   19.57 18.96 18.8   ~ 47 1
37 QSO J1008+0621 BLL 10 08 00.81616040 +06 21 21.2160257 17.61 17.17 17.85 16.73   ~ 123 1
38 4FGL J1019.7+0511 Bz? 10 19 46.0 +05 11 26           ~ 15 0
39 IceCube-141209A ev 10 40.2 +06 34           ~ 12 0
40 87GB 103758.5+063247 BLL 10 40 31.6262333280 +06 17 21.764932476   20.02 16.8 19.73   ~ 81 1
41 1RXS J104516.8+275135 Bla 10 45 16.2975138216 +27 51 33.460668468           ~ 27 0
42 Fermi J1045.3+2751 ev 10 47.4 +27 07           ~ 20 0
43 Fermi J1055.8+1034 gam 10 55.9 +10 35           ~ 2 0
44 IceCube-200109A ev 10 58.0 +11 52           ~ 22 0
45 2MASS J12584805-0447450 BLL 12 58 48.0460059168 -04 47 45.263736096     20.40 18.9   ~ 38 0
46 IceCube-200921A ev 13 01.2 +26 14           ~ 13 0
47 4C 05.57 BLL 13 42 43.6243995312 +05 04 32.206800972   18.45 17.77     ~ 85 1
48 IceCube-210210A ev 13 45.0 +04 25           ~ 14 0
49 Fermi J1420.7+1653 gam 14 20 47 +16 53.3           ~ 2 0
50 IceCube-220205A ev 14 24.5 +15 34           ~ 6 0
51 QSO B1424-41 Bla 14 27 56.29756617 -42 06 19.4376238   18.48 17.7 16.30   ~ 547 1
52 IceCube-140122A ev 14 38.6 -86 10           ~ 5 0
53 IceCube-220624A ev 14 56.5 +41 19           ~ 5 0
54 Fermi J1458.0+4119 gam 14 58.1 +41 19           ~ 4 0
55 QSO B1502+1041 Bla 15 04 24.97978391 +10 29 39.1985309   18.97 18.56 18.94   ~ 634 1
56 PMN J1506+0814 BLL 15 06 44.4736388448 +08 14 00.721409964       17   ~ 53 2
57 2XMM J151100.3+054920 BLL 15 11 00.4478479392 +05 49 20.942994900   21.53   19.20   ~ 10 0
58 PMN J1518+0613 Bla 15 18 45.7276771080 +06 13 56.112249504   16.65   15.37   ~ 66 1
59 IceCube-191119A ev 15 20.4 +03 10           ~ 24 0
60 4FGL J1523.2+0533 Bz? 15 23 14.473 +05 33 37.18           ~ 18 0
61 IceCube-200410A ev 16 10.3 +11 37           ~ 16 0
62 IceCube-200530A ev 17 03.3 +26 48           ~ 31 0
63 Fermi J1725.5+1312 gam 17 23.0 +14 23           ~ 3 0
64 1RXS J172314.4+142103 X 17 23 14.400 +14 21 02.99           ~ 3 0
65 IceCube-201021A ev 17 23.3 +14 33           ~ 20 0
66 QSO B1741-038 Bla 17 43 58.85613537 -03 50 04.6167326     20.40 17.98   ~ 583 1
67 IceCube-110930A ev 17 45.9 -04 25           ~ 7 0
68 2FGL J1747.6+0324 BLL 17 47 33.27 +03 27 04.3           ~ 19 0
69 IceCube-190221A ev 17 55.2 -17 02           ~ 15 0
70 AT20G J175841-161703 Bz? 17 58 41.12 -16 17 05.0           ~ 12 0
71 3FGL J2149.6+1915 Bla 21 49 46.6 +19 17 09           ~ 21 0
72 BWE 2147+1906 Bla 21 49 47.2489767024 +19 20 46.329074304           ~ 7 1
73 9Y-MST J2200+2137 Bla 22 00 07.4 +21 38 18           ~ 24 0
74 ICRF J220014.1+213757 BLL 22 00 14.1974732424 +21 37 57.038959488       19.04   ~ 39 1
75 4FGL J2218.6+1941 Bz? 22 18 37.0 +19 41 54           ~ 12 0
76 SDSS J222329.57+010226.6 BLL 22 23 29.5712726232 +01 02 26.654394588           ~ 46 0
77 QSO J2225+2118 Bla 22 25 38.0470440264 +21 18 06.414418332     18.19 17.65   ~ 180 1
78 4FGL J2225.6+2120 AG? 22 25 39.3 +21 20 30           ~ 22 0
79 RX J2226.6+0210 Bla 22 26 36.4348981907 +02 10 37.320468076           ~ 18 0
80 4C 00.81 Bla 22 26 46.53701435 +00 52 11.3314982   21.64 20.97 19.62   ~ 93 1
81 IceCube-140114A ev 22 26.8 -45 55           ~ 9 0
82 4FGL J2226.8+0051 AG? 22 26 51.0 +00 51 44           ~ 20 0
83 NVSS J222752+004446 rG 22 27 43.65 +00 57 30.0           ~ 39 0
84 IceCube-200523A ev 22 34.6 +01 45           ~ 8 0
85 4FGL J2236.9+1839 BLL 22 37 04.7848938113 +18 40 55.984423356           ~ 12 1
86 NVSS J224354+202103 BLL 22 43 54.7436079792 +20 21 03.775386276       16.1   ~ 116 1
87 4FGL J2248.9+2107 AG? 22 48 59.3 +21 07 17           ~ 20 0
88 ICRF J224900.5+210702 Bla 22 49 00.56671627 +21 07 02.8353838     19.5 20.40   ~ 53 1
89 IceCube-190619A ev 22 53.0 +10 44           ~ 21 0
90 9Y-MST J2255+2411 BLL 22 55 15.376 +24 10 11.31 17.65 17.55 17.23 18.1   ~ 67 1
91 4FGL J2306.6+0940 gam 23 06 36.1 +09 40 24           ~ 6 0
92 NVSS J230851+111149 Rad 23 08 51.8274777768 +11 11 49.468461648           ~ 6 1
93 4FGL J2308.9+1111 Bz? 23 08 59.5 +11 11 57           ~ 13 0
94 1RXS J232243.7+343616 BLL 23 22 44.0142017808 +34 36 13.873220208       13.2   ~ 87 1
95 IceCube-220115A ev 23 49.8 +25 17           ~ 5 0
96 Fermi J2350.2+2620 gam 23 50 15 +26 20.6           ~ 3 0
97 Fermi J1810.1+2154 gam ~ ~           ~ 3 0
98 IceCube-220205B ev ~ ~           ~ 5 0
99 IceCube-220822A ev ~ ~           ~ 8 0
100 IceCube-221210A ev ~ ~           ~ 6 0
101 IceCube-221223A ev ~ ~           ~ 8 0
102 IceCube-210503A ev ~ ~           ~ 6 0
103 IceCube-210608A ev ~ ~           ~ 5 0
104 Fermi J0931.9+3633 gam ~ ~           ~ 3 0
105 IceCube-210510A ev ~ ~           ~ 11 0
106 Fermi J0330.1+3743 gam ~ ~           ~ 3 0
107 Fermi J0703.5+0505 gam ~ ~           ~ 3 0
108 IceCube-210516A ev ~ ~           ~ 8 0
109 Fermi J1256.9+2630 gam ~ ~           ~ 3 0

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