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http://hdl.handle.net/20.500.12386/34418
Titolo: | Investigating the true nature of three hard X-ray sources | Autori: | MOLINA, Manuela MALIZIA, ANGELA MASETTI, NICOLA BASSANI, LOREDANA BAZZANO, ANGELA Bird, Antony J FIOCCHI, MARIATERESA PALAZZI, ELIANA UBERTINI, PIETRO |
Data pubblicazione: | 2021 | Rivista: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Numero: | 507 | Fascicolo: | 3 | Da pagina:: | 3423 | Abstract: | Many of the new high energy sources discovered both by INTEGRAL/IBIS and Swift/BAT have been characterised thanks to extensive, multi-band follow-up campaigns, but there are still objects whose nature remains to be asserted. In this paper we investigate the true nature of three high energy sources, IGR J12134-6015, IGR J16058-7253 and Swift J2037.2+4151, employing multiwavelength data from the NIR to the X-rays. Through Gaia and ESO-VLT measurements and through Swift/XRT X-ray spectral analysis, we re-evaluate the classification for IGR J12134-6015, arguing that the source is a Galactic object and in particular a Cataclysmic Variable. We were able to confirm, thanks to NuSTAR observations, that the hard X-ray emission detected by INTEGRAL/IBIS and Swift/BAT from IGR J16058-7253 is coming from two Seyfert 2 galaxies which are both counterparts for this source. Through optical and X-ray spectral analysis of Swift J2037.2+4151 we find that this source is likely part of the rare and peculiar class of Symbiotic X-ray binaries and displays flux and spectral variability as well as interesting spectral features, such as a blending of several emission lines around the iron line complex. | URI: | http://hdl.handle.net/20.500.12386/34418 | URL: | https://academic.oup.com/mnras/article/507/3/3423/6354793 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stab2370 | Fulltext: | open |
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