Skip banner and navigation tools.

 |  site map

GRB 210218A — Source 5 (SWIFT J030857.4+350930)

Build custom XRT products for this source.

Image of the XRT detection

This source is detected in 1 block. Show all images.

Image of the LC

Spectrum

Image of the spectrum

Back to list of objects in this field.

Source 3 has been manually confirmed as the GRB afterglow so these products are no longer updated.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.

Source details
Rank/Classification: 4: Known X-ray Source
RA (J2000):03h 08m 57.48s (= 47.23951°)
Dec (J2000):+35° 09′ 30.1″ (= +35.1584°)
Error (radius, 90%):4.6″
Detection flag:Good
XRT exposure:6.6 ks (vignetting corrected)
Peak rate:2.5 (+1.9, -1.3) ×10-3 ct s-1
Peak flux:1.1 (+0.8, -0.5) ×10-13 erg cm-2 s-1
Mean rate:1.9 (+0.9, -0.6) ×10-3 ct s-1
Mean flux:8.2 (+4.0, -2.8) ×10-14 erg cm-2 s-1
Has spectral fit?No
Database ID:535
Possible issues:
Optical Loading: No warning (automatic)
Stray Light: No warning (automatic)
Extended Emission: No warning (automatic)
Catalogue information
Known X-ray emitter?Yes - 1RXS J030855.8+350852 in the ROSAT/RASSFSC catalogue.
Cat. rate1:0.015 (±0.007) ct s-1
Cat. flux2:4.1 (±1.8) ×10-13 erg cm-2 s-1
Observed/Cat. flux≤0 σ
Fading? No (≤1-σ significance).
Near 2MASS source? No
Near SIMBAD source?No.
Catalogue SearchCone search radius 13″ 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 assuming a generic AGN spectrum:NH=3×1020 cm-2, Γ=1.7