首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Modeling the spectral energy distribution of 3C 454.3 in a 'flat' broad-line region scenario
【24h】

Modeling the spectral energy distribution of 3C 454.3 in a 'flat' broad-line region scenario

机译:在“平坦”宽线区域方案中对3C 454.3的光谱能量分布进行建模

获取原文
获取原文并翻译 | 示例
           

摘要

The broad-line region (BLR) of flat-spectrum radio quasars (FSRQs) could have a "flat" geometrical structure to allow GeV gamma-ray photons to escape, to produce the observed gamma-ray flares with short timescales. In this paper, we collect the quasisimultaneous spectral energy distributions (SEDs) of the FSRQ 3C 454.3 obtained by the multi-wavelength campaigns spanning from 2007 July to 2011 January, and use a model with a "flat" structure BLR, an accretion disc and a dust torus to explain the SEDs of gamma-ray outbursts. We obtain the following results: (i) the jet is almost in equipartition between magnetic and particle energy densities during the outbursts; (ii) when the emitting region is located inside the cavity of the BLR, the covering factor f(BLR) of the BLR is very small-as the emitting region goes into the BLR structure, fBLR increases; (iii) the aperture angle a describing the BLR structure is about 45 degrees; (iv) the central black hole mass is about 5 x 10(8) M-circle dot rather than 4.4 x 109 M-circle dot .
机译:平光谱无线电类星体(FSRQ)的宽线区域(BLR)可以具有“平坦”的几何结构,以使GeV伽马射线光子逸出,从而在较短的时间范围内产生观察到的伽马射线耀斑。在本文中,我们收集了从2007年7月至2011年1月进行的多波长运动获得的FSRQ 3C 454.3的准同时光谱能量分布(SED),并使用了具有“平坦”结构BLR,吸积盘和尘土环面,用以解释伽马射线爆发的SED。我们得到以下结果:(i)在爆发期间射流几乎处于磁能密度和粒子能密度之间; (ii)当发射区位于BLR腔内时,BLR的覆盖因子f(BLR)非常小-随着发射区进入BLR结构,fBLR增大; (iii)描述BLR结构的孔径角α约为45度; (iv)中心黑洞质量约为5 x 10(8)M圆点,而不是4.4 x 109 M圆点。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号