H0323+022天体的光变特性和黑洞质量研究  

The characteristic optical variability and black hole for the H0323+022

作　　者：张雄[1] 杨卫国[1] 侯德东[1] 胡绍明[2] 郑永刚[1] 毛慰明[1] 

机构地区：[1]云南师范大学物理系,昆明650092 [2]中国科学院国家天文台,北京100012

出　　处：《物理学报》2005年第6期2961-2968,共8页Acta Physica Sinica

基　　金：国家自然科学基金项目(批准号:10363002);教育部科学技术研究重点项目(批准号:02142);云南省自然科学基金项目(批准号:2004A0027M)资助的课题.~~

摘　　要：从大量文献资料中,收集了BLLac天体H0323+022光学V波段的大量观测数据,获得了H0323+022从1982年至2003年的长期光变曲线.给出了从2000年至2003年,使用云南天文台1米望远镜和上海天文台的1.56米望远镜,对H0323+022进行光学波段近4年的监测数据,观测发现了H0323+022在光学R波段有7min的短时标光变.色指数B—V与V波段的星等值有较强的相关性,对H0323+022CCD测光的结果与Bai(1998)观测的结果ΔR=0.63ΔI=0.81是一致的.由观测所发现的短时标光变,推算出了BLLac天体H0323+022的中心黑洞质量和辐射区域.All available V-band optical data on H0323 + 022 from a good many of references are compiled. The long-term light curve in the V-band from 1982 to 2003 for BL Lac object H0323 + 022 is obtained, and the optical photometry of the sourse, which were observed with the 1 m telescope of Yunnan Astronomical Observatory and 1.56 m telescope of Shanghai Astronomical observatory, is presented. Observed results show significant rapid variation and exhibit short-time variability of 23 min in R band. It is found a strong correlation between the B-V colour index and the magnitude in the B band. CCD photometry of H0323 + 022 showed that they are in good agreement with the results of Bai et al (1998). It is possible to estimate a black hole of emitting region R from the shortest time scale of H0323 + 022 object.

关 键 词：中心黑洞质量 短时标光变 辐射区域 光变曲线 BL Lac天体 

分 类 号：P145.8[天文地球—天体物理]