INTEGRAL/JEM-X detection of a type-I X-ray burst from MAXI J1421-613

E. Bozzo*, A. Bazzano, Erik Kuulkers, M. Fiocchi, C. Ferrigno, L. Bassani, A. Malizia, P. Parisi, A. Sguera, L. Natalucci, A. Tarana, P. Ubertini, A. Paizis, L. Sidoli, A. J. Bird, P. A. Charles, J. Chenevez, C. Winkler

*Corresponding author for this work

Research output: Other contributionNet publication - Internet publicationResearch


During the Galactic Plane Scan performed on 2014 January 10, the two JEM-X instruments on-board INTEGRAL detected a type-I X-ray burst from the newly discovered X-ray transient MAXI J1421-613 (ATels #5750, #5751, #5759) over the 5 ks in which the source was in the instruments field of view.

The onset of the burst occurred on 2014 January 10 at 19:05 UTC, and the total event as observed by JEM-X lasted for about 20 s (3-25 keV). The average spectrum of the burst could be roughly described by using a black-body model with temperature kT~1 keV. The corresponding flux was 1.7E-9 erg/cm^2/s (translating into a luminosity of 1.3E37 erg/s at 8 kpc; 3-10 keV). We estimated a persistent flux outside the burst of 7E-10 erg/cm^2/s (3-25 keV).

This detection reveals that MAXI J1421-613 is a newly discovered X-ray bursting transient source, thus hosting an accreting neutron star.
Original languageEnglish
Publication date15 Jan 2014
Publication statusPublished - 15 Jan 2014
SeriesThe Astronomer's telegram


  • X-ray
  • Neutron star
  • Transient


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