School of Physics & Astronomy

| site map

Home
About
The Swift Mission UK involvement Instruments
GRBs before Swift GRBs in the Swift era Non-GRB science with Swift GRB research at Leicester
Spacecraft status Swift in the press Swift Videos
Support
Helpdesk TOO requests Guest Investigator program Target visibility checker Search transient database
Data Access
Overview Quick Look GCN Notices Download obs data Search obs catalogue The 2SXPS catalogue The LSXPS catalogue
Data Analysis
Data analysis overview Swift software
Build XRT products
BAT data analysis guide XRT data analysis guide XRT digest UVOT data analysis guide
Data Products
GRBs Full dataset Swift XRT products for GRBs XRT positions XRT light curves XRT spectra XRT GRB catalogue XRT GRB images Burst analyser Prompt data GRB field info XRT prompt analysis External triggers Einstein Probe follow up SVOM follow up Neutrino follow up Gravitational Wave follow up
Publications
Publication index Published papers Submitted papers XRT instrument papers ATels GCNs Conferences
Links
Databases NED Simbad GCN circulars archive GRB data table Software & Tools Swift Software (HEASoft) Xanadu WebPIMMS Institutional Swift Sites GSFC PSU OAB SSDC MSSL University of Leicester

Swift-XRT products for GRB 150204A — Source 2

RA/Dec (J2000) = 10h 40m 56.96s, -64° 02′ 18.8″ +/- 5.0 (radius, 90%)

Back to list of objects in this field.

Source 2 has been manually confirmed as the GRB afterglow so these products are no longer updated. The up-to-date data for the afterglow are now available through the main GRB results area for this GRB.

This is the probable afterglow because:

The source is fading at the 3-σ confidence level.

Light curve	Spectrum

We expect ~1.50×10^-4 serendipitous objects at least as bright as this source in this tiled dataset, based on the logN-logS distribution of Mateos et al. (2008) [More details]

Source details

Peak XRT count rate	8.7 (±1.7) ×10^-3 ct s^-1
Mean XRT count rate	8.7 (±1.7) ×10^-3 ct s^-1
RASS upper limit	0.04 ct s^-1
Fading?	Yes
Mean flux (Observed, 0.3—10 keV)	3.5 (±0.7) ×10^-13 erg cm^-2s^-1
Peak flux (Observed, 0.3—10 keV)	3.5 (±0.7) ×10^-13 erg cm^-2s^-1
Mean rate (PSPC equivalent)	2.0 (±0.4) ×10^-3
Peak rate (PSPC equivalent)	2.0 (±0.4) ×10^-3