Cen A and its interaction with the x-ray emitting interstellar medium

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dc.creatorWorrall, D. M.
dc.creatorKraft, R. P.
dc.creatorBirkinshaw, M.
dc.creatorHardcastle, M. J.
dc.creatorForman, W. R.
dc.creatorJones, C.
dc.creatorMurray, S. S.
dc.date2004-10-12
dc.date.accessioned2026-07-07T02:15:03Z
dc.date.available2026-07-07T02:15:03Z
dc.descriptionAs the closest radio galaxy, Centaurus A is a powerful laboratory for the X-ray study of radio-emitting structures and their interactions with the hot interstellar medium (ISM). This paper details our interpretation of the remarkable X-ray enhancement which caps the inner southwest radio lobe, at a radius of about 6 kpc from the galaxy center. The shell of X-ray-emitting gas is hotter than the ambient ISM, and overpressured by a factor of 100. We argue that it is heated compressed material behind the supersonically-advancing bow shock of the radio lobe, the first example of the phenomenon to be clearly detected. The results demonstrate that Cen A is actively re-heating nearby X-ray-emitting gas. The shell's kinetic energy is $\sim 5$ times its thermal energy, and exceeds the thermal energy of the ISM within 15 kpc of the center of the galaxy. As the shell dissipates it will have a major effect on Cen A's ISM, providing distributed heating.
dc.descriptionTo appear in `X-ray and radio connections', ed. L.O. Sjouwerman and K.K. Dyer (http://www.aoc.nrao.edu/events/xraydio)
dc.identifierhttps://arxiv.org/abs/astro-ph/0410299
dc.identifierhttp://arxiv.org/abs/astro-ph/0410299
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8356
dc.subjectAstrophysics
dc.titleCen A and its interaction with the x-ray emitting interstellar medium
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