IceCube realtime alert:

Report generated (UTC):	2023-05-12 07:22:35
Current time (UTC):

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Back to all alerts

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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 J1908.9+2103	287.24	21.06	PSR J1908+2105	Search Simbad	0.65	LCR FAVA DX
4FGL J1921.1+1930	290.29	19.51		Search Simbad	2.61	LCR FAVA DX
4FGL J1922.2+2314	290.57	23.25	2MASS J19221223+2315210	Search Simbad	3.56	LCR FAVA DX
4FGL J1919.1+2354	289.78	23.90		Search Simbad	3.64	LCR FAVA DX
4FGL J1859.0+2329	284.77	23.50		Search Simbad	3.96	LCR FAVA DX
4FGL J1906.1+1651	286.54	16.86		Search Simbad	4.07	LCR FAVA DX
4FGL J1912.0+1612	288.02	16.20	IVS B1909+161	Search Simbad	4.54	LCR FAVA DX
4FGL J1925.2+1729	291.32	17.48	PSR J1925+1720	Search Simbad	4.63	LCR FAVA DX
4FGL J1856.5+1735	284.14	17.60		Search Simbad	4.70	LCR FAVA DX
4FGL J1928.4+1801	292.11	18.02	MG2 J192830+1759	Search Simbad	4.86	LCR FAVA DX
4FGL J1929.8+1832	292.45	18.55	1RXS J193012.1+183201	Search Simbad	4.87	LCR FAVA DX
4FGL J1925.1+1707	291.29	17.12	MG2 J192501+1727	Search Simbad	4.87	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

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
PS J1901.3+2106	285.35	21.11	2.36	PowerLaw	13.70	1.378e-08	N/A	Spectrum plot FITS file npy file
PS J1923.1+2047	290.80	20.79	2.77	PowerLaw	18.64	4.960e-08	N/A	Spectrum plot FITS file npy file
PS J1918.8+2444	289.72	24.73	4.35	PowerLaw	13.10	7.160e-09	N/A	Spectrum plot FITS file npy file
4FGL J1928.4+1801c	292.11	18.02	4.86	PowerLaw	15.12	1.786e-07	1.295e-09	Spectrum plot FITS file npy file
4FGL J1932.3+1916	293.08	19.27	5.14	PLSuperExpCutoff2	11.52	6.706e-08	8.161e-09	Spectrum plot FITS file npy file
4FGL J1925.4+1616	291.36	16.28	5.57	PowerLaw	32.22	3.346e-07	2.440e-09	Spectrum plot FITS file npy file
4FGL J1935.2+2029	293.82	20.49	5.60	PLSuperExpCutoff2	8.40	9.606e-08	2.334e-09	Spectrum plot FITS file npy file
PS J1927.2+1620	291.81	16.35	5.79	PowerLaw	13.28	1.037e-08	N/A	Spectrum plot FITS file npy file
PS J1859.5+2551	284.88	25.86	5.79	PowerLaw	9.46	1.030e-08	N/A	Spectrum plot FITS file npy file
4FGL J1931.1+1656	292.78	16.94	6.02	LogParabola	3.76	3.798e-08	3.586e-09	Spectrum plot FITS file npy file
PS J1936.5+1928	294.14	19.48	6.05	PowerLaw	12.03	6.021e-08	N/A	Spectrum plot FITS file npy file
PS J1853.2+1549	283.30	15.82	6.54	PowerLaw	20.99	8.071e-08	N/A	Spectrum plot FITS file npy file
4FGL J1922.7+1428	290.70	14.47	6.83	LogParabola	15.57	1.165e-07	N/A	Spectrum plot FITS file npy file
PS J1911.6+2758	287.90	27.98	7.24	PowerLaw	16.40	2.175e-10	N/A	Spectrum plot FITS file npy file
4FGL J1912.5+1320	288.13	13.35	7.40	LogParabola	13.47	1.284e-07	1.159e-09	Spectrum plot FITS file npy file
PS J1940.5+1749	295.13	17.83	7.47	PowerLaw	10.61	1.594e-08	N/A	Spectrum plot FITS file npy file
PS J1921.1+1329	290.30	13.49	7.62	PowerLaw	14.22	5.778e-08	N/A	Spectrum plot FITS file npy file
PS J1841.5+2439	280.40	24.65	7.90	PowerLaw	17.03	2.863e-08	N/A	Spectrum plot FITS file npy file
PS J1929.6+1356	292.42	13.95	8.08	PowerLaw	13.47	1.111e-09	N/A	Spectrum plot FITS file npy file
4FGL J1844.4+1547	281.12	15.79	8.08	LogParabola	25.38	2.529e-08	2.222e-09	Spectrum plot FITS file npy file
PS J1840.8+1313	280.22	13.22	10.47	PowerLaw	12.04	2.119e-09	N/A	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]	110.0 deg
Moon separation [deg]	51.1 deg