Resumo

SAAD, A. Ata; NASSER, M. Ahmed; AHMED, M. Abdelbar  e  BEHEARY, M. M. X-Ray Flux and Spectral Variability of BL Lacertae Objects Mrk 421, Mrk 501, and 1ES1426+428 with Suzaku Satellite. Rev. mex. astron. astrofis [online]. 2021, vol.57, n.1, pp.133-145.  Epub 30-Set-2021. ISSN 0185-1101.  https://doi.org/10.22201/ia.01851101p.2021.57.01.09.

We present a detailed spectral study of Suzaku observations of three blazars (Mrk 421, Mrk 501, and 1ES1426+428). The X-ray properties of our sample are derived by extracting the BL Lacertae sample spectra, and fitted by five models. The fit was in the soft X-ray band (0.8 - 10.0 keV). These models give similar results. By comparing the fits from the different models, we find that the (zbremss+zpowerlw) model is the best one to represent the data. An F-test is applied to compare the (zbremss+zpowerlw) model with the simple one zpower law. To test the X-ray variability of our BL Lacertae sample, we fit their spectra extracted from the same instrument with the same procedure by the same model to estimate their X-ray flux and luminosity. The estimated fluxes are compared to check their variability. We find that the flux variability ranges are 3.06, 0.12, 0:37x10-10 erg s-1 cm-2 for Mrk 421, Mrk 501, and 1ES1426+428, respectively.