IceCube realtime alert:

Report generated (UTC):	2023-05-12 13:01:07
Current time (UTC):

---

Back to all alerts

---

Alert properties

Event type:
RA (J2000) [deg]:
Dec (J2000) [deg]:
Error radius [deg]:
Trigger time:
Run ID:
Event ID:
GCN Notice:

Skymaps

	All-sky equatorial
	All-sky Galactic

Nearby 4FGL sources

Fermi sources are shown within a 5 deg radius from the alert best-fit position. Sources contained within the error circle of the alert are highlighted in color. For sources with a known association, "Search Simbad" returns an identifier query using the association name listed (note that in many cases the association name is not resolved by Simbad). If no association is listed, return a radial search 0.3 deg around the Fermi source position.

Name	RA [deg]	Dec [deg]	Association	Search	Distance [deg]	MWL
4FGL J2032.6+4053	308.15	40.89	Cyg X-3	Search Simbad	0.74	LCR FAVA DX
4FGL J2028.6+4110e	307.17	41.17	Cygnus X	Search Simbad	1.11	LCR FAVA DX
4FGL J2032.2+4127	308.06	41.46	PSR J2032+4127	Search Simbad	1.28	LCR FAVA DX
4FGL J2021.5+4026	305.39	40.44	PSR J2021+4026	Search Simbad	1.89	LCR FAVA DX
4FGL J2023.4+4127	305.87	41.45	SSTSL2 J202336.19+412527.0	Search Simbad	1.96	LCR FAVA DX
4FGL J2021.0+4031e	305.27	40.52	gamma Cygni	Search Simbad	1.99	LCR FAVA DX
4FGL J2022.3+3840	305.58	38.67	PSR J2022+3842	Search Simbad	2.32	LCR FAVA DX
4FGL J2038.4+4212	309.62	42.21		Search Simbad	2.42	LCR FAVA DX
4FGL J2018.5+3852	304.64	38.87	TXS 2016+386	Search Simbad	2.80	LCR FAVA DX
4FGL J2030.0+3641	307.51	36.69	PSR J2030+3641	Search Simbad	3.51	LCR FAVA DX
4FGL J2043.1+4256	310.79	42.95	NVSS J204232+425813	Search Simbad	3.53	LCR FAVA DX
4FGL J2050.0+4114	312.50	41.24		Search Simbad	3.68	LCR FAVA DX
4FGL J2035.0+3632	308.76	36.54		Search Simbad	3.72	LCR FAVA DX
4FGL J2021.1+3651	305.28	36.86	PSR J2021+3651	Search Simbad	3.89	LCR FAVA DX
4FGL J2030.9+4416	307.73	44.27	PSR J2030+4415	Search Simbad	4.08	LCR FAVA DX
4FGL J2016.2+3712	304.06	37.21	VER J2016+372	Search Simbad	4.20	LCR FAVA DX
4FGL J2015.5+3710	303.89	37.18	MG2 J201534+3710	Search Simbad	4.31	LCR FAVA DX
4FGL J2021.9+3609	305.49	36.16		Search Simbad	4.44	LCR FAVA DX
4FGL J2017.9+3625	304.49	36.43	PSR J2017+3625	Search Simbad	4.59	LCR FAVA DX
4FGL J2047.5+4356	311.88	43.94		Search Simbad	4.80	LCR FAVA DX

Nearby 3FHL sources

Fermi sources are shown within a 5 deg radius from the alert best-fit position. Sources contained within the error circle of the alert are highlighted in color. For sources with a known association, "Search Simbad" returns an identifier query using the association name listed (note that in many cases the association name is not resolved by Simbad). If no association is listed, return a radial search 0.3 deg around the Fermi source position.

Name	RA [deg]	Dec [deg]	Association	Search	Distance [deg]	MWL
3FHL J2028.6+4110e	307.17	41.17	Cygnus X	Search Simbad	1.11	LCR FAVA DX
3FHL J2032.2+4127	308.05	41.45	LAT PSR J2032+4127	Search Simbad	1.27	LCR FAVA DX
3FHL J2021.5+4026	305.39	40.45	LAT PSR J2021+4026	Search Simbad	1.89	LCR FAVA DX
3FHL J2021.0+4031e	305.27	40.52	gamma Cygni	Search Simbad	1.99	LCR FAVA DX
3FHL J2018.5+3851	304.65	38.86	TXS 2016+386	Search Simbad	2.81	LCR FAVA DX
3FHL J2021.1+3651	305.29	36.86	PSR J2021+3651	Search Simbad	3.89	LCR FAVA DX
3FHL J2015.9+3712	304.00	37.22	VER J2016+372	Search Simbad	4.23	LCR FAVA DX

Fermi-LAT prompt analysis

Fermi-LAT analysis of the alert over two different timescales of one month and the full mission.

One month results

Results per source

Fermi sources with a TS > 9 are included in this list. Links are provided for the spectral fits results as a plot, and in FITS and npy format.

Name	RA [deg]	Dec [deg]	Distance [deg]	Spectrum type	TS	Flux above 100 MeV [ph cm^-2 s^-1]	4FGL-DR3 flux above 100 MeV [ph cm^-2 s^-1]	Result files
4FGL J2032.6+4053	308.15	40.89	0.74	LogParabola	5.67	1.381e-08	3.261e-09	Spectrum plot FITS file npy file
PS J2027.6+3955	306.90	39.92	0.77	PowerLaw	12.77	7.744e-08	N/A	Spectrum plot FITS file npy file
4FGL J2032.2+4127	308.06	41.46	1.28	PLSuperExpCutoff2	100.93	1.082e-07	2.328e-08	Spectrum plot FITS file npy file
4FGL J2021.5+4026	305.39	40.44	1.89	PLSuperExpCutoff2	1990.11	1.231e-06	1.093e-07	Spectrum plot FITS file npy file
4FGL J2038.4+4212	309.62	42.21	2.42	LogParabola	17.87	1.638e-07	3.345e-09	Spectrum plot FITS file npy file
PS J2018.3+3856	304.59	38.95	2.80	PowerLaw	16.92	1.358e-08	N/A	Spectrum plot FITS file npy file
4FGL J2030.0+3641	307.51	36.69	3.51	PLSuperExpCutoff2	41.81	3.372e-08	8.146e-09	Spectrum plot FITS file npy file
4FGL J2021.1+3651	305.28	36.86	3.89	PLSuperExpCutoff2	1009.71	6.863e-07	7.190e-08	Spectrum plot FITS file npy file
4FGL J2030.9+4416	307.73	44.27	4.08	PLSuperExpCutoff2	28.65	9.220e-08	7.557e-09	Spectrum plot FITS file npy file
4FGL J2015.5+3710	303.89	37.18	4.31	LogParabola	39.73	2.120e-07	7.120e-09	Spectrum plot FITS file npy file
4FGL J2017.9+3625	304.49	36.43	4.59	PLSuperExpCutoff2	37.38	1.447e-07	1.067e-08	Spectrum plot FITS file npy file
4FGL J2013.5+3613	303.38	36.23	5.29	LogParabola	12.59	3.171e-08	1.566e-09	Spectrum plot FITS file npy file
4FGL J2026.6+3449	306.65	34.83	5.44	PowerLaw	10.09	4.071e-08	6.042e-10	Spectrum plot FITS file npy file
PS J2046.4+4516	311.62	45.28	5.79	PowerLaw	8.97	2.298e-08	N/A	Spectrum plot FITS file npy file
PS J2056.7+4341	314.18	43.69	5.87	PowerLaw	11.28	4.424e-08	N/A	Spectrum plot FITS file npy file
PS J2006.1+4352	301.53	43.88	5.96	PowerLaw	11.35	4.206e-09	N/A	Spectrum plot FITS file npy file
PS J2036.2+4615	309.06	46.26	6.13	PowerLaw	12.67	5.781e-08	N/A	Spectrum plot FITS file npy file
4FGL J2027.0+3343	306.77	33.72	6.52	PowerLaw	16.78	1.718e-08	2.932e-10	Spectrum plot FITS file npy file
PS J1958.6+3831	299.66	38.52	6.55	PowerLaw	15.42	4.717e-09	N/A	Spectrum plot FITS file npy file
4FGL J2025.3+3341	306.34	33.69	6.61	LogParabola	2.78	4.224e-08	1.976e-09	Spectrum plot FITS file npy file
4FGL J2028.3+3331	307.08	33.53	6.69	PLSuperExpCutoff2	15.60	2.362e-08	1.041e-08	Spectrum plot FITS file npy file
4FGL J2012.0+4629	303.02	46.49	7.21	LogParabola	61.24	6.470e-08	5.000e-09	Spectrum plot FITS file npy file
PS J1958.5+3516	299.64	35.28	8.13	PowerLaw	21.41	1.185e-07	N/A	Spectrum plot FITS file npy file
PS J2107.1+3540	316.78	35.67	8.37	PowerLaw	14.99	1.632e-08	N/A	Spectrum plot FITS file npy file
4FGL J2004.3+3339	301.10	33.66	8.47	LogParabola	10.49	4.237e-08	3.620e-09	Spectrum plot FITS file npy file
PS J2059.0+3312	314.76	33.21	8.91	PowerLaw	16.85	5.214e-10	N/A	Spectrum plot FITS file npy file
4FGL J2111.4+4606	317.86	46.10	9.39	PLSuperExpCutoff2	58.86	1.505e-07	6.743e-09	Spectrum plot FITS file npy file
4FGL J1952.9+3252	298.25	32.88	10.61	PLSuperExpCutoff2	6.30	1.997e-07	2.030e-08	Spectrum plot FITS file npy file

Fermi-LAT GeV photons

GeV photons observed from the direction of the alert over the last month

Interactive skymap

The interactive window shows a background of the Fermi (color) skymap and markers for nearby sources in three HE catalogs: 4FGL, 3FHL, and 2WHSP. Other catalogs (2RXS and BZCat) plus a dynamic HiPS search in Simbad can be enabled from the layer control of the left. An additional Simbad search shows a selection of objects (detected in radio, X-rays, gamma-rays and/or galaxies) near the best fit position. The background sky can be changed to optical (Mellinger survey) from the radio buttons below the image.

Visibility

Visibility plots (elevation vs time) for four ground-based instruments over the next hours for the alert. Dark (light) bands indicate civil (astronomical) twilights for each site. Moon and sun elevations are also shown.

Swift visibility

Visibility conditions for Swift at the time of the report generation based on the distance of the alert position to the Sun and Moon. Red or green colors indicate if the position is observable (>23 deg away from the Moon and >47 away from the Sun).

Sun separation [deg]	86.1 deg
Moon separation [deg]	62.7 deg