2020
DOI: 10.1093/mnras/staa3404
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Exploring the hot gaseous halo around an extremely massive and relativistic jet launching spiral galaxy with XMM−Newton

Abstract: We present a deep XMM−Newton observation of the extremely massive, rapidly rotating, relativistic-jet-launching spiral galaxy 2MASX J23453268-0449256. Diffuse X-ray emission from the hot gaseous halo around the galaxy is robustly detected out to a radius of 160 kpc, corresponding roughly to 35 per cent of the virial radius (≈450 kpc). We fit the X-ray emission with the standard isothermal β model, and it is found that the enclosed gas mass within 160 kpc is $1.15_{-0.24}^{+0.22} \times 10^{11} \, \rm {M}_{\odo… Show more

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Cited by 16 publications
(18 citation statements)
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“…We point out that relativistic jets (in which there has been intense interest for decades: see [38] for a recent relevant example) may have a significance in this context. Spiral galaxies (on a QGT reading) all have central supermassive black holes (BHs), and therefore necessarily increase their entropy (since black holes necessarily grow).…”
Section: Discussionmentioning
confidence: 95%
“…We point out that relativistic jets (in which there has been intense interest for decades: see [38] for a recent relevant example) may have a significance in this context. Spiral galaxies (on a QGT reading) all have central supermassive black holes (BHs), and therefore necessarily increase their entropy (since black holes necessarily grow).…”
Section: Discussionmentioning
confidence: 95%
“…6 suggest that star formation can be inhibited during AGN episodes, even if not all gas is immediately outflowing in a rapid, instantaneous blowout event, as has initially been suggested by early cosmological models of AGN feedback. The molecular gas mass is comparable to the hot X-ray gas within the inner ∼80 kpc of the halo (Walker et al 2015), and corresponds to ∼2.5% of the total hot gas content in the halo as estimated by Mirakhor et al (2021). Much of the disk gas may have accumulated through partial cooling of the hot gas out of the halo, in analogy with X-ray bright galaxy clusters (Revaz et al 2008;Voit et al 2015;Gaspari et al 2020).…”
Section: Radio Jet Feedback and The Low Stellar Mass Fraction In J2345−0449mentioning
confidence: 92%
“…Extrapolating from in-situ observations of radio jet feedback to the global implications of such episodes for the growth history of massive galaxies is one of the most important aspects of AGN feedback studies, but observational constraints that allow us to directly quantify both in the same galaxy are usually very difficult to come by. Past X-ray observations of J2345−0449 by Walker et al (2015) and Mirakhor et al (2021) revealing a bright X-ray halo surrounding the disk, and the highly unusual presence of a radio jet in this late-type spiral give us the rare opportunity to discuss complementary observational constraints on the on-going feedback episode seen in molecular gas, and on the global suppression of star formation derived from the baryon budget in stars and hot halo gas.…”
Section: From the Current Feedback Episode To The Global Suppression Of Gas Cooling And Galaxy Growthmentioning
confidence: 99%
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