2021ApJS..256...13B

Query : 2021ApJS..256...13B

2021ApJS..256...13B - Astrophys. J., Suppl. Ser., 256, 13-13 (2021/September-0)

Catalog of long-term transient sources in the first 10 yr of Fermi-LAT data.

BALDINI L., BALLET J., BASTIERI D., BECERRA GONZALEZ J., BELLAZZINI R., BERRETTA A., BISSALDI E., BLANDFORD R.D., BLOOM E.D., BONINO R., BOTTACINI E., BRUEL P., BUSON S., CAMERON R.A., CARAVEO P.A., CAVAZZUTI E., CHEN S., CHIARO G., CIANGOTTINI D., CIBARIO N., CIPRINI S., CRISTARELLA ORESTANO P., CRNOGORCEVIC M., CUTINI S., D'AMMANDO F., DE LA TORRE LUQUE P., DE PALMA F., DIGEL S.W., DI LALLA N., DIRIRSA F., DI VENERE L., DOMINGUEZ A., FIORI A., FLEISCHHACK H., FRANCKOWIAK A., FUKAZAWA Y., FUNK S., FUSCO P., GARGANO F., GASPARRINI D., GERMANI S., GIGLIETTO N., GIORDANO F., GIROLETTI M., GREEN D., GRENIER I.A., GRIFFIN S., GUIRIEC S., GUSTAFSSON M., HEWITT J.W., HORAN D., IMAZAWA R., JOHANNESSON G., KERR M., KOCEVSKI D., KUSS M., LARSSON S., LATRONICO L., LI J., LIODAKIS I., LONGO F., LOPARCO F., LOVELLETTE M.N., LUBRANO P., MALDERA S., MANFREDA A., MARTI-DEVESA G., MATAKE H., MAZZIOTTA M.N., MEREU I., MEYER M., MIRABAL N., MITTHUMSIRI W., MIZUNO T., MONZANI M.E., MORSELLI A., MOSKALENKO I.V., NAGASAWA S., NEGRO M., OJHA R., ORIENTI M., ORLANDO E., PALATIELLO M., PALIYA V., PANEQUE D., PEI Z., PERSIC M., PESCE-ROLLINS M., PETROSIAN V., POON H., PORTER T.A., PRINCIPE G., RACUSIN J.L., RAINO S., RANDO R., RANI B., RAZZANO M., RAZZAQUE S., REIMER A., REIMER O., SAZ PARKINSON P.M., SCOTTON L., SERINI D., SGRO C., SISKIND E.J., SPANDRE G., SPINELLI P., SUSON D.J., TAJIMA H., TAK D., TORRES D.F., TOSTI G., TROJA E., WOOD K., YASSINE M., ZAHARIJAS G. (The Fermi-LAT Collaboration)

Abstract (from CDS):

We present the first Fermi Large Area Telescope (LAT) catalog of long-term γ-ray transient sources (1FLT). This comprises sources that were detected on monthly time intervals during the first decade of Fermi-LAT operations. The monthly timescale allows us to identify transient and variable sources that were not yet reported in other Fermi-LAT catalogs. The monthly data sets were analyzed using a wavelet-based source detection algorithm that provided the candidate new transient sources. The search was limited to the extragalactic regions of the sky to avoid the dominance of the Galactic diffuse emission at low Galactic latitudes. The transient candidates were then analyzed using the standard Fermi-LAT maximum likelihood analysis method. All sources detected with a statistical significance above 4σ in at least one monthly bin were listed in the final catalog. The 1FLT catalog contains 142 transient γ-ray sources that are not included in the 4FGL-DR2 catalog. Many of these sources (102) have been confidently associated with active galactic nuclei (AGNs): 24 are associated with flat-spectrum radio quasars, 1 with a BL Lac object, 70 with blazars of uncertain type, 3 with radio galaxies, 1 with a compact steep-spectrum radio source, 1 with a steep-spectrum radio quasar, and 2 with AGNs of other types. The remaining 40 sources have no candidate counterparts at other wavelengths. The median γ-ray spectral index of the 1FLT-AGN sources is softer than that reported in the latest Fermi-LAT AGN general catalog. This result is consistent with the hypothesis that detection of the softest γ-ray emitters is less efficient when the data are integrated over year-long intervals.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): High energy astrophysics - Active galactic nuclei - Gamma-ray bursts - Solar flares - Solar gamma-ray emission - Gamma-rays - Gamma-ray sources - Catalogs - Gamma-ray telescopes - Gamma-ray transient sources - Blazars - Quasars

VizieR on-line data: <Available at CDS (J/ApJS/256/13): tableb1.dat tableb2.dat tableb3.dat>

Nomenclature: Table B1: 1FLT JHHMM+DDMM N=142.

Simbad objects: 160

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Number of rows : 160
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 1FLT J0002-2148 gam 00 02 00.46594 -21 48 21.1176           ~ 1 0
2 1FLT J0010+1056 gam 00 10 06.06790 +10 56 17.8764           ~ 1 0
3 Mrk 1501 Bla 00 10 31.00590413 +10 58 29.5042981   15.96 15.40 12.22   ~ 763 1
4 1FLT J0010+3905 gam 00 10 48.19495 +39 05 18.1320           ~ 1 0
5 1FLT J0112+0711 gam 01 12 50.45880 +07 11 47.3388           ~ 1 0
6 1FLT J0115+5230 gam 01 15 25.99368 +52 30 52.6788           ~ 1 0
7 1FLT J0115-2237 gam 01 15 49.58544 -22 37 48.2376           ~ 1 0
8 1FLT J0121+2602 gam 01 21 35.20200 +26 02 24.0648           ~ 1 0
9 1FLT J0125+2212 gam 01 25 50.18976 +22 12 55.5048           ~ 1 0
10 1FLT J0136+1505 gam 01 36 38.00208 +15 05 34.9152           ~ 1 0
11 1FLT J0139+1744 gam 01 39 19.70304 +17 44 24.6660           ~ 1 0
12 1FLT J0141-1330 gam 01 41 40.84536 -13 30 37.8900           ~ 1 0
13 1FLT J0149+2602 gam 01 49 21.25584 +26 02 08.3544           ~ 1 0
14 1FLT J0202+3910 gam 02 02 23.71128 +39 10 19.8480           ~ 1 0
15 1FLT J0209+7459 gam 02 09 31.30320 +74 59 26.4840           ~ 1 0
16 1FLT J0230+1423 gam 02 30 33.13008 +14 23 34.0908           ~ 1 0
17 1FLT J0240-4657 gam 02 40 37.80240 -46 57 03.5064           ~ 1 0
18 1FLT J0240-4739 gam 02 40 51.87744 -47 39 22.1040           ~ 1 0
19 1FLT J0253+1801 gam 02 53 31.09032 +18 01 01.2216           ~ 1 0
20 1FLT J0259-5406 gam 02 59 22.00008 -54 06 09.1800           ~ 1 0
21 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
22 1FLT J0321-1136 gam 03 21 09.97560 -11 36 24.8904           ~ 1 0
23 1FLT J0332-1733 gam 03 32 06.25848 -17 33 30.6360           ~ 1 0
24 1FLT J0342-1807 gam 03 42 06.96816 -18 07 07.8492           ~ 1 0
25 1FLT J0343+1200 gam 03 43 01.62312 +12 00 14.0364           ~ 1 0
26 1FLT J0350+0512 gam 03 50 42.63528 +05 12 15.2532           ~ 1 0
27 1FLT J0357-1509 gam 03 57 37.07280 -15 09 17.4276           ~ 1 0
28 1FLT J0402-1227 gam 04 02 02.66640 -12 27 48.4488           ~ 1 0
29 1FLT J0402+1431 gam 04 02 39.46008 +14 31 19.4196           ~ 1 0
30 1FLT J0408+6839 gam 04 08 34.92000 +68 39 25.0920           ~ 1 0
31 1FLT J0409-5530 gam 04 09 10.10640 -55 30 10.6416           ~ 1 0
32 3C 111 Sy1 04 18 21.2772425736 +38 01 35.801359968   19.75 18.05     ~ 1002 2
33 1FLT J0448-3424 gam 04 48 36.52320 -34 24 34.0200           ~ 1 0
34 1FLT J0457-6830 gam 04 57 11.86080 -68 30 32.9580           ~ 1 0
35 1FLT J0459-7909 gam 04 59 59.79120 -79 09 24.0660           ~ 1 0
36 1FLT J0512-7007 gam 05 12 12.83520 -70 07 44.4180           ~ 1 0
37 1FLT J0519-3709 gam 05 19 45.15600 -37 09 38.0304           ~ 1 0
38 1FLT J0520-6726 gam 05 20 09.86880 -67 26 17.6640           ~ 1 0
39 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
40 1FLT J0527-3747 gam 05 27 11.45040 -37 47 33.0360           ~ 1 0
41 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
42 1FLT J0546+8247 gam 05 46 10.45200 +82 47 07.0080           ~ 1 0
43 1FLT J0620-1226 gam 06 20 33.12960 -12 26 08.4588           ~ 1 0
44 1FLT J0642-3237 gam 06 42 04.56480 -32 37 47.5248           ~ 1 0
45 1FLT J0645+7222 gam 06 45 05.14800 +72 22 51.9960           ~ 1 0
46 1FLT J0653-3649 gam 06 53 52.38480 -36 49 29.8920           ~ 1 0
47 1FLT J0657+4619 gam 06 57 34.86144 +46 19 57.4320           ~ 1 0
48 1FLT J0657-5348 gam 06 57 44.86440 -53 48 15.7500           ~ 1 0
49 1FLT J0724+7027 gam 07 24 01.93440 +70 27 09.1800           ~ 1 0
50 1FLT J0734-6137 gam 07 34 38.80920 -61 37 21.7920           ~ 1 0
51 1FLT J0734+1721 gam 07 34 48.41520 +17 21 25.6392           ~ 1 0
52 1FLT J0804+8311 gam 08 04 59.37000 +83 11 55.0176           ~ 1 0
53 1FLT J0837+2500 gam 08 37 43.44480 +25 00 35.3484           ~ 1 0
54 1FLT J0845+5040 gam 08 45 19.92480 +50 40 01.0560           ~ 1 0
55 1FLT J0855-1233 gam 08 55 00.62880 -12 33 37.3032           ~ 1 0
56 1FLT J0902+3323 gam 09 02 37.73520 +33 23 16.4292           ~ 1 0
57 1FLT J0943+0940 gam 09 43 13.96080 +09 40 35.1300           ~ 1 0
58 3C 226.0 Sy1 09 44 16.51944 +09 46 16.9068   19.5       ~ 131 2
59 1FLT J0953-3006 gam 09 53 28.20240 -30 06 26.4780           ~ 1 0
60 1FLT J1008+1319 gam 10 08 23.53920 +13 19 53.1300           ~ 1 0
61 1FLT J1008+0528 gam 10 08 33.26400 +05 28 08.1048           ~ 1 0
62 1FLT J1016+0959 gam 10 16 09.27600 +09 59 18.0960           ~ 1 0
63 1FLT J1019-3216 gam 10 19 48.63600 -32 16 52.8600           ~ 1 0
64 1FLT J1022-3140 gam 10 22 57.19440 -31 40 20.0424           ~ 1 0
65 1FLT J1053+1409 gam 10 53 22.78560 +14 09 36.4392           ~ 1 0
66 1FLT J1053+1529 gam 10 53 49.92960 +15 29 49.3188           ~ 1 0
67 1FLT J1055+6509 gam 10 55 53.14080 +65 09 45.2700           ~ 1 0
68 1FLT J1112-0934 gam 11 12 18.87360 -09 34 00.4008           ~ 1 0
69 1FLT J1113-0537 gam 11 13 26.87280 -05 37 40.2654           ~ 1 0
70 1FLT J1117+8436 gam 11 17 07.96560 +84 36 52.6320           ~ 1 0
71 1FLT J1117-4839 gam 11 17 33.13440 -48 39 49.5720           ~ 1 0
72 1FLT J1117-1604 gam 11 17 47.33760 -16 04 28.3800           ~ 1 0
73 1FLT J1133-1052 gam 11 33 43.72800 -10 52 20.3376           ~ 1 0
74 1FLT J1137+1010 gam 11 37 23.41920 +10 10 04.7064           ~ 1 0
75 1FLT J1141+0023 gam 11 41 39.70800 +00 23 38.2242           ~ 1 0
76 1FLT J1145-4044 gam 11 45 04.29120 -40 44 49.7544           ~ 1 0
77 1FLT J1145-1531 gam 11 45 33.64320 -15 31 35.4072           ~ 1 0
78 3C 266 rG 11 45 43.384 +49 46 07.90   22       ~ 150 1
79 1FLT J1146-0926 gam 11 46 24.86400 -09 26 48.0120           ~ 1 0
80 1FLT J1151+3938 gam 11 51 38.59440 +39 38 27.6216           ~ 1 0
81 1FLT J1153-3658 gam 11 53 39.87600 -36 58 10.3800           ~ 1 0
82 1FLT J1201-2658 gam 12 01 43.01760 -26 58 45.6600           ~ 1 0
83 1FLT J1202-2144 gam 12 02 55.25280 -21 44 06.8064           ~ 1 0
84 1FLT J1210+3708 gam 12 10 18.17520 +37 08 24.7668           ~ 1 0
85 1FLT J1219+2907 gam 12 19 36.22080 +29 07 20.8200           ~ 3 0
86 NGC 4278 LIN 12 20 06.8242 +29 16 50.722 11.54 11.09 10.16     ~ 988 2
87 1FLT J1223-0847 gam 12 23 44.36160 -08 47 03.4404           ~ 1 0
88 1FLT J1224-0536 gam 12 24 39.15120 -05 36 01.0836           ~ 1 0
89 1FLT J1226+0232 gam 12 26 02.84160 +02 32 18.6432           ~ 1 0
90 1FLT J1237-4430 gam 12 37 53.93280 -44 30 25.0344           ~ 1 0
91 1FLT J1259+5444 gam 12 59 50.40000 +54 44 19.6800           ~ 1 0
92 1FLT J1322-4521 gam 13 22 47.84640 -45 21 20.1600           ~ 1 0
93 1FLT J1323-4439 gam 13 23 36.67680 -44 39 57.2400           ~ 1 0
94 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
95 1FLT J1331+1346 gam 13 31 21.68640 +13 46 02.5968           ~ 1 0
96 1FLT J1356-1545 gam 13 56 24.86880 -15 45 58.7376           ~ 1 0
97 1FLT J1402-1547 gam 14 02 51.76080 -15 47 16.2492           ~ 1 0
98 1FLT J1412+7641 gam 14 12 46.83840 +76 41 17.5560           ~ 1 0
99 7C 1413+3458 Bz? 14 16 04.18619489 +34 44 36.4264542           ~ 102 1
100 1FLT J1416+3447 gam 14 16 17.40720 +34 47 54.6144           ~ 1 0
101 1FLT J1419+3708 gam 14 19 03.35520 +37 08 11.3280           ~ 1 0
102 1FLT J1421-2222 gam 14 21 39.71520 -22 22 58.7712           ~ 1 0
103 1FLT J1422-3254 gam 14 22 41.75520 -32 54 06.8580           ~ 1 0
104 1FLT J1426+3139 gam 14 26 59.06640 +31 39 36.6984           ~ 1 0
105 1FLT J1502-2420 gam 15 02 54.56640 -24 20 21.6456           ~ 1 0
106 1FLT J1513-2830 gam 15 13 36.98400 -28 30 16.2612           ~ 1 0
107 1FLT J1522+1535 gam 15 22 23.76960 +15 35 47.1336           ~ 1 0
108 1FLT J1528-1348 gam 15 28 53.09280 -13 48 14.8734           ~ 1 0
109 1FLT J1533-2130 gam 15 33 47.97600 -21 30 11.4732           ~ 1 0
110 1FLT J1544+2705 gam 15 44 10.55520 +27 05 45.0312           ~ 1 0
111 1FLT J1554-0252 gam 15 54 13.50480 -02 52 22.1732           ~ 1 0
112 PMN J1603-4904 BLL 16 03 50.68456556 -49 04 05.5056817   20.67       ~ 89 1
113 1FLT J1605+7725 gam 16 05 29.24640 +77 25 02.2980           ~ 1 0
114 1FLT J1618-1016 gam 16 18 17.47200 -10 16 57.1728           ~ 1 0
115 1FLT J1622+0044 gam 16 22 51.03120 +00 44 32.6486           ~ 1 0
116 1FLT J1626+5436 gam 16 26 01.71120 +54 36 24.4440           ~ 1 0
117 1FLT J1628-1449 gam 16 28 12.22320 -14 49 26.4432           ~ 1 0
118 1FLT J1649+2725 gam 16 49 57.04080 +27 25 01.7364           ~ 1 0
119 1FLT J1701+2801 gam 17 01 40.41120 +28 01 13.7280           ~ 1 0
120 1FLT J1708-1246 gam 17 08 32.79120 -12 46 44.5800           ~ 1 0
121 NGC 6328 QSO 17 23 41.02933859 -65 00 36.6106377   13.17 13.2 11.45 12.2 ~ 270 1
122 1FLT J1732+1510 gam 17 32 49.27680 +15 10 00.1416           ~ 1 0
123 NVSS J173322+151321 Rad 17 33 22.6032184257 +15 13 22.229241855           ~ 11 1
124 1FLT J1734+5158 gam 17 34 25.92000 +51 58 07.7880           ~ 1 0
125 1FLT J1737+1854 gam 17 37 04.90080 +18 54 10.0152           ~ 1 0
126 1FLT J1752+4355 gam 17 52 49.10880 +43 55 06.9960           ~ 1 0
127 1FLT J1801-7816 gam 18 01 13.68000 -78 16 22.6704           ~ 1 0
128 1FLT J1803+2523 gam 18 03 20.80080 +25 23 52.6668           ~ 1 0
129 1FLT J1815+2017 gam 18 15 48.36960 +20 17 14.0460           ~ 1 0
130 1FLT J1823+4759 gam 18 23 15.60000 +47 59 58.9200           ~ 1 0
131 1FLT J1851-6844 gam 18 51 18.00000 -68 44 27.4920           ~ 1 0
132 1FLT J1918-2816 gam 19 18 32.10240 -28 16 31.3428           ~ 1 0
133 [VV2006] J191916.6-454338 Bla 19 19 16.6923889512 -45 43 38.581901868     21.00 18.8   ~ 27 1
134 1FLT J1919-4543 gam 19 19 22.52160 -45 43 41.8440           ~ 1 0
135 1FLT J1922-6615 gam 19 22 25.80000 -66 15 15.2280           ~ 1 0
136 1FLT J1929-7909 gam 19 29 27.43680 -79 09 05.3064           ~ 1 0
137 1FLT J1933-5420 gam 19 33 41.52000 -54 20 34.8000           ~ 1 0
138 1FLT J1936+5341 gam 19 36 51.31200 +53 41 20.2200           ~ 1 0
139 NVSS J193655+534307 Rad 19 36 55.091 +53 43 07.55           ~ 4 2
140 1FLT J1937-5509 gam 19 37 06.48960 -55 09 12.2976           ~ 1 0
141 1FLT J1943-3034 gam 19 43 38.35680 -30 34 20.6580           ~ 1 0
142 1FLT J1944-5135 gam 19 44 29.38560 -51 35 57.3720           ~ 1 0
143 1FLT J1952+4942 gam 19 52 02.88000 +49 42 15.1092           ~ 1 0
144 QSO B2004-447 Bla 20 07 55.1842447944 -44 34 44.274118260   19.3 19.3 18   ~ 185 1
145 1FLT J2010-2523 gam 20 10 13.70400 -25 23 40.2648           ~ 1 0
146 2FAV J2009-25.4 Bla 20 10 19.7652294984 -25 23 59.240478516           ~ 25 1
147 1FLT J2013-1732 gam 20 13 59.87520 -17 32 43.0512           ~ 1 0
148 1FLT J2035-2708 gam 20 35 01.60320 -27 08 21.2856           ~ 1 0
149 1FLT J2035+0955 gam 20 35 36.72000 +09 55 26.7960           ~ 1 0
150 1FLT J2112-3207 gam 21 12 23.66400 -32 07 17.9976           ~ 1 0
151 1FLT J2113-2616 gam 21 13 28.32000 -26 16 08.4000           ~ 1 0
152 1FLT J2114+1113 gam 21 14 02.42400 +11 13 17.2128           ~ 1 0
153 1FLT J2141+1615 gam 21 41 44.93520 +16 15 51.7932           ~ 1 0
154 1FLT J2142-2303 gam 21 42 48.10560 -23 03 36.6012           ~ 1 0
155 1FLT J2144-3215 gam 21 44 18.03120 -32 15 36.4464           ~ 1 0
156 [VV2006] J221935.3-271903 QSO 22 19 35.32023991 -27 19 03.2944061     19.72     ~ 34 1
157 1FLT J2219-2732 gam 22 19 56.95200 -27 32 00.6432           ~ 1 0
158 1FLT J2241-3550 gam 22 41 39.95280 -35 50 35.1780           ~ 1 0
159 1FLT J2302+0457 gam 23 02 06.53280 +04 57 54.3010           ~ 1 0
160 1FLT J2341-4205 gam 23 41 29.97600 -42 05 54.7224           ~ 1 0

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