Skip banner and navigation tools.

 |  site map

GRB 250804B — Source 1 (SWIFT J024208.2-463137)

Build custom XRT products for this source.

Image of the XRT detection

This source is detected in 2 blocks. Show all images.

Image of the LC

Spectrum

Image of the spectrum

Back to list of objects in this field.

Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):02h 42m 08.25s (= 40.53438°)
Dec (J2000):-46° 31′ 37.7″ (= -46.5271°)
Error (radius, 90%):7.3″
Detection flag:Good
XRT exposure:942 s (vignetting corrected)
Peak rate:0.062 (±0.014) ct s-1
Peak flux:2.7 (±0.6) ×10-12 erg cm-2 s-1
Mean rate:0.062 (±0.010) ct s-1
Mean flux:2.7 (±0.4) ×10-12 erg cm-2 s-1
Has spectral fit?Yes
NH 2.60 × 1021 cm-2
Γ 3.41
Database ID:1455
Possible issues:
Optical Loading: Needs checking (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - XMMSL3 J024208.6-463130 in the XMM-NEWTON/XMMSLEWCLN catalogue.
Cat. rate1:0.53 (±0.26) ct s-1
Cat. flux2:3.2 (±1.6) ×10-12 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? Yes, 4 matches. Show details.
Near SIMBAD source?Yes - HD 17006 is 9.9″ away.
High proper motion star?Yes. HD 17006
Catalogue SearchCone search radius 21″ Vizier | Simbad | NED | X-ray master | LSXPS | 3XMM-DR5

Notes
All XRT count rates and fluxes are 0.3—10 keV
1Catalogued count-rates have been converted to XRT equivalents.
2Catalogued upper limits and fluxes have been converted to the XRT equivalent using the automatic power-law spectral fit described above.

2MASS objects near the source

ID Position Offset from
XRT source		 J H K