2023MNRAS.518.6083T

Query : 2023MNRAS.518.6083T

2023MNRAS.518.6083T - Mon. Not. R. Astron. Soc., 518, 6083-6091 (2023/February-1)

A galactic breeze origin for the Fermi bubbles emission.

TOURMENTE O., RODGERS-LEE D. and TAYLOR A.M.

Abstract (from CDS):

The origin of the Fermi bubbles, which constitute two gamma-ray emitting lobes above and below the Galactic plane, remains unclear. The possibility that this Fermi bubbles gamma-ray emission originates from hadronic cosmic rays advected by a subsonic Galactic outflow, or breeze, is here explored. The simulation of a breeze solution and subsequent cosmic ray transport is carried out using the hydrodynamical code, PLUTO, in combination with a cosmic ray transport code. The Galactic outflow model obtained is found to be compatible with both inferences of the decelerating outflow velocity profile of the gas in the Fermi bubbles region, and evidence for the presence of a large amount of hot ionized gas out in the Galactic halo region. Although simple, this model is found to be able to reproduce the observed Fermi-LAT energy flux at high Galactic latitudes. Following these results a prediction concerning the gamma-ray emission for 1-3 TeV photons is made for future comparison with CTA/SWGO measurements.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): cosmic rays - ISM: jets and outflows - galaxy: halo - gamma-rays: galaxies

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Fermi Bubbles bub 17 45 -29.0           ~ 525 0

Query : 2023MNRAS.518.6083T

Basic data :
NAME Fermi Bubbles -- Bubble
Other object types: otypes_help 		bub (), gam ()
ICRS coord. (ep=J2000) : 		17 45 22.9 -29 01 17 (Gamma-ray) [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		17 42 12.2 -29 00 07 [ ]
Gal coord. (ep=J2000) : 		359.9000 -00.0000 [ ]
Angular size (arcmin): 		6000 2580 120 (~) E 2010ApJ...724.1044S
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Identifiers (2) :
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NAME Fermi Bubbles NAME Fermi Bubble

References (525 between 1850 and 2026) (Total 525)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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