The Fermi and eROSITA bubbles likely result from identical ~10^56 erg collimated outbursts separated by ~10 Myr, with asymmetry indicating an eastern ambient density gradient.
Bipolar-Hyper-Shell Galactic Center Statrburst Model: Further Evidence from ROSAT Data and New Radio and X-ray Simulations
2 Pith papers cite this work. Polarity classification is still indexing.
2
Pith papers citing it
abstract
Using the all-sky ROSAT soft X-ray and 408-MHz radio continuum data, we show that the North Polar Spur and its western and southern counter-spurs draw a giant dumbbell-shape necked at the galactic plane. We interpret these features as due to a shock front originating from a starburst 15 million years ago with a total energy of the order of $\sim 10^{56}$ ergs or $10^5$ type II supernovae. We simulate all-sky distributions of radio continuum and soft X-ray intensities based on the bipolar-hyper-shell galactic center starburst model. The simulations can well reproduce the radio NPS and related spurs, as well as radio spurs in the tangential directions of spiral arms. Simulated X-ray maps in 0.25, 0.75 and 1.5 keV bands reproduce the ROSAT X-ray NPS, its western and southern counter-spurs, and the absorption layer along the galactic plane. We propose to use the ROSAT all-sky maps to probe the physics of gas in the halo-intergalactic interface, and to directly date and measure the energy of a recent Galactic Center starburst.
fields
astro-ph.HE 2verdicts
UNVERDICTED 2representative citing papers
Reports ~20% projected polarization in synchrotron and thermal dust emission from Fermi bubbles, with fields parallel to edges, and attributes larger lobes to an older supermassive black hole outburst.
citing papers explorer
-
Nested Fermi and eROSITA bubbles require very similar $\sim10^{56}$ erg collimated Galactic-center outbursts; their asymmetry indicates an eastern density gradient
The Fermi and eROSITA bubbles likely result from identical ~10^56 erg collimated outbursts separated by ~10 Myr, with asymmetry indicating an eastern ambient density gradient.
-
Detection of polarized Fermi-bubble synchrotron and dust emission
Reports ~20% projected polarization in synchrotron and thermal dust emission from Fermi bubbles, with fields parallel to edges, and attributes larger lobes to an older supermassive black hole outburst.