【摘要】：利用離散傅里葉分析法,基于RXTE(Rossi X-ray Timing Explorer)/ASM(All-Sky Monitor,1.5～12 keV)觀測數(shù)據(jù),對黑洞候選體X射線雙星Cyg X-1硬度比HR(5～12 keV/3～5 keV)(簡寫HR)的時變特性進行了分析,結(jié)果表明黑洞候選體X射線雙星Cyg X-1硬度比HR存在明顯的周期特性:(1)混合態(tài)(硬態(tài)+軟態(tài),本文指MJD=50087～55841期間所有的觀測數(shù)據(jù))時,HR存在T≈5.6 d、40.0 d、78.4 d、173.8 d以及400/800 d的時變周期;(2)硬態(tài)時,HR存在T≈5.6 d、33.7/67.6 d、45.3 d和165.3 d的周期特性;(3)軟態(tài)時,HR出現(xiàn)了T≈38.5 d、48.1 d和128.3 d的周期性變化.并利用粘滯理論和Zdziarski吸積盤模型討論了以上周期特性的物理機制.
[Abstract]:Based on the RXTE (Rossi X-ray Timing Explorer) / ASM (All-Sky Monitor,1.5~12 keV) data, the time-varying characteristics of the X-ray binary star Cyg X-1 hardness ratio HR (5 ~ 12 keV/3~5 keV) (HR) are analyzed by using discrete Fourier analysis (DFT). The results show that the hardness of the black hole candidate Cyg X-1 is more periodic than that of HR: (1) the mixed state (hard soft state), In this paper, we refer to all the observed data during MJD=50087~55841), the time varying period of T 鈮，

本文編號：2287971