This is the Analysis page for GRB260401454: GRB260401454

Version History of Data Files: v01 v00 tte_v00

GRB Properties

Parameters calculated by MPE

Property Value Error (1 σ statistical)
Trigger Number 796733611
Trigger Time April 01, 2026, 10:53:26
Data Timestamp April 01, 2026, 11:49:28
Localization Timestamp April 01, 2026, 12:02:55
Balrog Ra [deg] 220.7 0.7
Balrog Dec [deg] -16.9 0.7
Error radius 1 σ [deg] 1.3
Error radius 2 σ [deg] 2.3
Estimated systematic error [deg] 1
Fitted Model cutoff_powerlaw
Spectral Parameter K [photons/cm^2/keV*s] 59 2.6
Spectral Parameter Index -1.8 0.011
Spectral Parameter XC [keV] 6e+03 2e+03
Satellite Phi [deg] -149.25
Satellite Theta [deg] 31.25

Parameters from external Source

Property Value
Swift Ra [deg]
Swift Dec [deg]
Most likely GRB 98.0%
Second most likely GENERIC_SGR 1.0%

GRB Location Alert

To circulars@gcn.nasa.gov

GRB 260401A: BALROG localization (Fermi Trigger 796733611 / GRB 260401454)

T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
796733611 at 10:53:26 on 01 April 2026 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).

The best-fit position is:
RA(2000.0) = 220.7 deg
Decl.(2000.0) = -16.9 deg
The 1 sigma statistical error radius is 1.3 deg.
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB260401454/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB260401454/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB260401454/json

GRB Location

J2000 Coordinate Frame

All Corner Plot

J2000 Coordinate Frame

Moll Location Plot

J2000 Coordinate Frame

Satellite

Spectrum Residuals Plot

3D - GRB Location Plot

Satellite Coordiante Frame

Light Curves

data/GRB260401454/plots/260401_120257424727_GRB260401454_lightcurve_trigdat_detector_b0_plot_v01.png
Lightcurve detector b0
data/GRB260401454/plots/260401_120257169104_GRB260401454_lightcurve_trigdat_detector_b1_plot_v01.png
Lightcurve detector b1
data/GRB260401454/plots/260401_120259044853_GRB260401454_lightcurve_trigdat_detector_n0_plot_v01.png
Lightcurve detector n0
data/GRB260401454/plots/260401_120258945567_GRB260401454_lightcurve_trigdat_detector_n1_plot_v01.png
Lightcurve detector n1
data/GRB260401454/plots/260401_120258803337_GRB260401454_lightcurve_trigdat_detector_n2_plot_v01.png
Lightcurve detector n2
data/GRB260401454/plots/260401_120258683427_GRB260401454_lightcurve_trigdat_detector_n3_plot_v01.png
Lightcurve detector n3
data/GRB260401454/plots/260401_120258636644_GRB260401454_lightcurve_trigdat_detector_n4_plot_v01.png
Lightcurve detector n4
data/GRB260401454/plots/260401_120258394851_GRB260401454_lightcurve_trigdat_detector_n5_plot_v01.png
Lightcurve detector n5
data/GRB260401454/plots/260401_120258308149_GRB260401454_lightcurve_trigdat_detector_n6_plot_v01.png
Lightcurve detector n6
data/GRB260401454/plots/260401_120258313085_GRB260401454_lightcurve_trigdat_detector_n7_plot_v01.png
Lightcurve detector n7
data/GRB260401454/plots/260401_120258090764_GRB260401454_lightcurve_trigdat_detector_n8_plot_v01.png
Lightcurve detector n8
data/GRB260401454/plots/260401_120258005985_GRB260401454_lightcurve_trigdat_detector_n9_plot_v01.png
Lightcurve detector n9
data/GRB260401454/plots/260401_120258001585_GRB260401454_lightcurve_trigdat_detector_na_plot_v01.png
Lightcurve detector na
data/GRB260401454/plots/260401_120257699117_GRB260401454_lightcurve_trigdat_detector_nb_plot_v01.png
Lightcurve detector nb