Evolution of Optical Spectral Index of S5 0716+714

摘要：

The multicolor (BVRI) optical observations of S5 0716 +714 spanning from 1994 to 2005 are presented. We analyze the spectral variability and spectrum evolution in the optical energy region. The spectrum hardens when the source becomes brighter, which is consistent with that of the general BL Lac objects. The spectral evolution parameter implies that the spectral variability is small in optical bands over 1O years. A simple model representing the variability of a synchrotron component can explain the spectral changes.

关键词： BL Lacertae objects general - galaxies active - BL Lacertae object individual (S5 0716+714)

作者: B. Z. Dai J. M. Hao

作者单位: Department of Physics, Yunnan University, Kunming, 650091, P. R. China Department of Physics, Yunnan University, Kunming, 650091, P. R. China Department of Physics, Yunnan

会议类型: 国际会议

会议名称: The 10th Asian-Pacific Regional International Astronomical Union Meeting(第十届亚洲及太平洋地区天文学大会 APRIM)

会议地点: 昆明

会议语种:英文

页码: 214-215

在线出版日期: 2008-08-03（万方平台首次上网日期，不代表论文的发表时间）