Publication: Searching for the electron/positron pair halo of the Blazar H1426+428 using XMM-Newton
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Issued Date
2019
Resource Type
File Type
application/pdf
ISSN
17426588
Other identifier(s)
2-s2.0-85077816923
Rights Holder(s)
Scopus
Bibliographic Citation
Journal of Physics: Conference Series. Vol 1380, No.1 (2019)
Suggested Citation
Kueathan A., Luangtip W., Eungwanichayapant A. Searching for the electron/positron pair halo of the Blazar H1426+428 using XMM-Newton. Journal of Physics: Conference Series. Vol 1380, No.1 (2019). doi:10.1088/1742-6596/1380/1/012117 Retrieved from: https://hdl.handle.net/20.500.14740/5021
Author(s)
Abstract
Electron/positron pair halo is a physical phenomenon in which the very high energy gamma rays emitted from Blazar interact with cosmic infrared background (CIB) so that produce the electron/positron pairs; the produced electron/positron pairs could up-scatter the cosmic microwave background (CMB) reproducing the gamma-rays, thus these form the cascade process of producing the electron/positron pairs appearing as an halo around the blazar. In case that the halo presents in the ambient strong magnetic field, the electron/positron pairs could emit X-ray light via synchrotron process providing another opportunity to detect the halo. In this work, we search for the X-ray emission from the halo of the Blazar H1426+428 using the observed X-ray data from XMM-Newton observatory. The X-ray spectra of the halo are carefully extracted from the annulus, source free regions around the Blazar to avoid the X-ray contaminations from the Blazar itself and the nearby point sources. These spectra were fitted using the physical model which takes into account the emissions from the unresolved cosmic X-ray and instrument backgrounds. The unresolved flux of 10-13 erg s-1 cm-2 have been detected in the regions, and we argue that, at least, some fraction of the flux might be the emission from the halo. © Published under licence by IOP Publishing Ltd.