Multifrequency emission analysis of TeV blazars H 2356-309 and 1ES 1218+304

作者：Tang Yun Yong^*; Dai Zu Cheng; Zhang Li

来源：Research in Astronomy and Astrophysics, 2010, 10(5): 415-426.

• radiation mechanisms
• active-BL Lacertae objects
• TeV blazars: individual (H 2356-309, 1ES 1218+304)

The multiband nonthermal emissions in radio, X-ray, and very high-energy (VHE) gamma-ray bands from two distant blazars, H 2356-309 and 1ES 1218+304, have been detected, and, especially from recent observations with the Suzaku, MAGIC and VERITAS telescopes, clearly reveal nonthermal power-law spectra. We study the broadband nonthermal spectra of the two sources by using a combination of a one-zone homogeneous synchrotron self-Compton (SSC) model and an inhomogeneous conical jet model, where the new external background light (EBL) model is taken into account. The results show that (1) the nonthermal emissions of the two blazars, ranging from X-rays to VHE gamma-rays, are from the homogeneous zone whereas the emissions in the radio bands can be explained as the radiation from the inhomogeneous conical jet; (2) a strict lower-limit EBL model can be used to explain their observed spectra well.

• 出版日期2010-5
• 单位云南大学; 昆明学院