IceCube realtime alert:

Report generated (UTC):2023-05-12 20:54:26
Current time (UTC):

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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.

NameRA [deg]Dec [deg]AssociationSearchDistance [deg]MWL
4FGL J0250.6+843542.6684.60WN B0239.6+8423Search Simbad1.51LCR FAVA DX
4FGL J0151.3+860127.8486.02WN B0140.0+8546Search Simbad1.69LCR FAVA DX
4FGL J0054.4+862713.6186.45WN B0046.2+8611Search Simbad2.37LCR FAVA DX
4FGL J0228.1+820837.0382.14WN B0220.3+8153Search Simbad2.47LCR FAVA DX
4FGL J0140.6+873625.1787.61WN B0126.6+8722Search Simbad3.28LCR FAVA DX
4FGL J2326.5+8555351.6485.92Search Simbad3.34LCR FAVA DX
4FGL J0333.1+822753.3082.451RXS J033208.6+822654Search Simbad3.49LCR FAVA DX
4FGL J0353.7+825758.4482.96WN B0343.1+8247Search Simbad3.66LCR FAVA DX
4FGL J0233.9+804138.5080.691RXS J023428.6+804341Search Simbad3.90LCR FAVA DX
4FGL J2354.9+8151358.7481.87S5 2353+81Search Simbad4.14LCR FAVA DX
4FGL J2312.4+8253348.1082.89Search Simbad4.48LCR FAVA DX
4FGL J0509.6+842577.4084.42S5 0454+84Search Simbad4.77LCR 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.

NameRA [deg]Dec [deg]AssociationSearchDistance [deg]MWL
3FHL J0249.7+843442.4484.58NVSS J024948+843556Search Simbad1.49LCR FAVA DX
3FHL J0148.4+860127.1186.03NVSS J014929+860114Search Simbad1.70LCR FAVA DX
3FHL J0353.4+825658.3782.95WN B0343.1+8247Search Simbad3.66LCR FAVA DX
3FHL J0233.9+804238.4880.711RXS J023428.6+804341Search Simbad3.88LCR 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.

NameRA [deg]Dec [deg]Distance [deg]Spectrum typeTSFlux above 100 MeV [ph cm^-2 s^-1]4FGL-DR3 flux above 100 MeV [ph cm^-2 s^-1]Result files
PS J0238.5+830839.6383.141.80PowerLaw11.361.111e-09N/ASpectrum plot FITS file npy file
PS J0217.3+861034.3586.171.93PowerLaw14.893.208e-08N/ASpectrum plot FITS file npy file
PS J0343.4+835455.8783.902.94PowerLaw18.548.406e-09N/ASpectrum plot FITS file npy file
4FGL J2354.9+8151358.7481.874.14PowerLaw16.724.422e-083.157e-10Spectrum plot FITS file npy file
PS J0013.8+80553.4680.924.50PowerLaw13.397.433e-09N/ASpectrum plot FITS file npy file
4FGL J0509.6+842577.4084.424.77PowerLaw21.561.932e-089.321e-11Spectrum plot FITS file npy file
PS J0210.3+793332.5879.554.83PowerLaw12.653.640e-08N/ASpectrum plot FITS file npy file
PS J0335.5+784853.8878.806.63PowerLaw11.997.899e-09N/ASpectrum plot FITS file npy file
PS J0557.0+820789.2682.127.22PowerLaw14.081.214e-08N/ASpectrum plot FITS file npy file
4FGL J0930.3+8612142.6086.208.06PowerLaw22.452.570e-089.470e-10Spectrum plot FITS file npy file
4FGL J0153.0+751728.2575.299.04PowerLaw5.162.419e-074.302e-10Spectrum plot FITS file npy file
4FGL J0007.0+73031.7773.0512.07PLSuperExpCutoff25.395.677e-076.629e-08Spectrum 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]66.8 deg
Moon separation [deg]110.0 deg