Matches in SemOpenAlex for { <https://semopenalex.org/work/W3101048799> ?p ?o ?g. }
- W3101048799 endingPage "9" @default.
- W3101048799 startingPage "9" @default.
- W3101048799 abstract "The Fermi bubbles are two lobes filled with non-thermal particles that emit gamma rays, extend $approx$10 kpc vertically from the Galactic center, and formed from either nuclear star formation or accretion activity on Sgr A*. Simulations predict a range of shock strengths as the bubbles expand into the surrounding hot gas halo distribution ($T_{halo} approx 2 times 10^6$ K), but with significant uncertainties in the energetics, age, and thermal gas structure. The bubbles should contain thermal gas with temperatures between $10^6$ and $10^8$ K, with potential X-ray signatures. In this work, we constrain the bubbles' thermal gas structure by modeling the OVII and OVIII emission line strengths from archival XMM-Newton and Suzaku data. Our emission model includes a hot thermal volume-filled bubble component cospatial with the gamma-ray region, and a shell of compressed material. We find that a bubble/shell model with $n approx 1 times 10^{-3}$ cm$^{-3}$ and with log($T$) $approx$ 6.60-6.70 is consistent with the observed line intensities. In the framework of a continuous Galactic outflow, we infer a bubble expansion rate, age, and energy injection rate of $490_{-77}^{+230}$ km s$^{-1}$, $4.3_{-1.4}^{+0.8}$ Myr, and $2.3_{-0.9}^{+5.1} times 10^{42}$ erg s$^{-1}$. These estimates are consistent with the bubbles forming from a Sgr A* accretion event rather than from nuclear star formation." @default.
- W3101048799 created "2020-11-23" @default.
- W3101048799 creator A5016719102 @default.
- W3101048799 creator A5056608429 @default.
- W3101048799 date "2016-09-13" @default.
- W3101048799 modified "2023-10-04" @default.
- W3101048799 title "THE INTERACTION OF THE FERMI BUBBLES WITH THE MILKY WAY’S HOT GAS HALO" @default.
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