Astronomy Reports ( IF 1 ) Pub Date : 2020-06-05 , DOI: 10.1134/s1063772920050042 A. Vasylenko , E. Fedorova , A. Del Popolo
Abstract
We analyze all the available X-ray data in order to monitor the narrow-line Seyfert 1 galaxy NGC 4748, namely XMM-Newton (EPIC and OM), INTEGRAL (ISGRI and JEM-X), and SWIFT (BAT and XRT) data to study both the wide-band 0.5–195 keV spectrum and light curves in details. To this aim, we use the autocorrelation analysis of the light curves, modeling the spectra with several physically-conditioned models in XSPEC software package. We find a fast quasiperiodic variation of the 0.5–10.0 keV flux on the timescales of kiloseconds in the XMM/EPIC composite light curve.
中文翻译:
X射线中的窄线SY1 NGC 4748:详细的案例研究
摘要
我们分析所有可用的X射线数据,以便监视窄线塞弗1号星系NGC 4748,即XMM-牛顿(EPIC和OM),积分(ISGRI和JEM-X)和SWIFT(BAT和XRT)数据详细研究宽带0.5–195 keV光谱和光曲线。为此,我们使用光曲线的自相关分析,在XSPEC软件包中使用几个物理条件化的模型对光谱进行建模。我们在XMM / EPIC复合光曲线的千分之一秒的时间尺度上发现了0.5–10.0 keV通量的快速准周期性变化。