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arXiv 1201.1024astro-ph.CO
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表征Mrk 509中的UV和X射线流出

Characterizing the UV and X-ray Outflow in Mrk 509

G. A. Kriss, N. Arav, J. S. Kaastra, J. Ebrero, C. Pinto, B. Borguet, D. Edmonds, E. Costantini, K. C. Steenbrugge, R. G. Detmers, E. Behar, S. Bianchi, A. J. B… 展开作者

G. A. Kriss, N. Arav, J. S. Kaastra, J. Ebrero, C. Pinto, B. Borguet, D. Edmonds, E. Costantini, K. C. Steenbrugge, R. G. Detmers, E. Behar, S. Bianchi, A. J. Blustin, G. Branduardi-Raymont, M. Cappi, M. Mehdipour, P. Petrucci, G. Ponti

摘要:

我们在2009年秋季使用XMM-牛顿,钱德拉,HST/COS,SWIFT和Integral进行多波长活动期间观察到Mrk 509。600-ks的XMM/RGS光谱发现两个运动学组件和一个离散分布的电离吸收剂。我们的高S/N COS光谱检测到Mrk 509中各种来源的已知紫外线吸收槽的额外复杂性,包括活动核的流出,ISM和宿主星系的晕,以及由AGN照亮的合并的下沉云或剥离气体。紫外吸收只部分覆盖了活动星系核的辐射,覆盖率低于以前用STIS看到的,与FUSE看到的相当。考虑到COS和FUSE的孔径比STIS大,我们倾向于用来自活动星系核附近扩展区域的散射光来解释部分覆盖。如在现有的X射线和UV光谱中所观察到的,UV吸收具有与X射线吸收相当的速度,但是紫外吸收的主体处于较低的电离状态,具有比负责X射线吸收的气体更低的总柱密度。与先前的紫外光谱相比,可变性使我们能够对流出气体的位置、密度、质量通量和动能设定限制。对于$-400 \rm km s^{-1}$的第1部分,紫外线和X射线外流的动能通量不足以对宿主星系的进一步演化产生重大影响。

英文摘要:

We observed Mrk 509 during the fall of 2009 during a multiwavelength campaign using XMM-Newton, Chandra, HST/COS, SWIFT, and Integral. The 600-ks XMM/RGS spectrum finds two kinematic components and a discrete distribution of ionized absorbers. Our high S/N COS spectrum detects additional complexity in the known UV absorption troughs from a variety of sources in Mrk 509, including the outflow from the active nucleus, the ISM and halo of the host galaxy, and infalling clouds or stripped gas from a merger that are illuminated by the AGN. The UV absorption only partially covers the emission from the AGN nucleus with covering fractions lower than those previously seen with STIS, and are comparable to those seen with FUSE. Given the larger apertures of COS and FUSE compared to STIS, we favor scattered light from an extended region near the AGN as the explanation for the partial covering. As observed in prior X-ray and UV spectra, the UV absorption has velocities comparable to the X-ray absorption, but the bulk of the ultraviolet absorption is in a lower ionization state with lower total column density than the gas responsible for the X-ray absorption. Variability compared to prior UV spectra lets us set limits on the location, density, mass flux, and kinetic energy of the outflowing gas. For component 1 at $-400 \rm km s^{-1}$, the kinetic energy flux of both the UV and the X-ray outflow is insufficient to have a significant impact on further evolution of the host galaxy.

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