The Fermi bubbles are two large structures above and below the Galactic Plane. They are first discovered by Fermi-LAT and thought to be related to the jet or the wind from the Galactic center. The DArk Matter Particle Explorer (DAMPE) is a space-borne high energy particle telescope aiming at measuring cosmic rays and photons in a broad energy range. In this work, we use 4.8 years of DAMPE photon data to search for the emission from the Fermi Bubbles. We calculate the TS values of the lobes and the significance of its curved spectrum. The obtained spectral parameters are then compared with those from the Fermi-LAT. We also search for the emission from the cocoon in the southeast part of lobes. Since the Galactic diffuse emission (GDE) model is a major source of systematic uncertainty, we also switch to the GDE models calculated with Galprop and evaluate the influence.

Alemanno F., An Q., Azzarello P., Barbato F.C.T., Bernardini P., Bi X.J., et al. (2022). Analyzing the Fermi Bubbles with DArk Matter Particle Explorer. POS PROCEEDINGS OF SCIENCE, 395.

Analyzing the Fermi Bubbles with DArk Matter Particle Explorer

Marsella G.;
2022-03-18

Abstract

The Fermi bubbles are two large structures above and below the Galactic Plane. They are first discovered by Fermi-LAT and thought to be related to the jet or the wind from the Galactic center. The DArk Matter Particle Explorer (DAMPE) is a space-borne high energy particle telescope aiming at measuring cosmic rays and photons in a broad energy range. In this work, we use 4.8 years of DAMPE photon data to search for the emission from the Fermi Bubbles. We calculate the TS values of the lobes and the significance of its curved spectrum. The obtained spectral parameters are then compared with those from the Fermi-LAT. We also search for the emission from the cocoon in the southeast part of lobes. Since the Galactic diffuse emission (GDE) model is a major source of systematic uncertainty, we also switch to the GDE models calculated with Galprop and evaluate the influence.
18-mar-2022
Settore FIS/01 - Fisica Sperimentale
37th International Cosmic Ray Conference, ICRC 2021
deu
2021
37th
Alemanno F., An Q., Azzarello P., Barbato F.C.T., Bernardini P., Bi X.J., et al. (2022). Analyzing the Fermi Bubbles with DArk Matter Particle Explorer. POS PROCEEDINGS OF SCIENCE, 395.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/613258
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