2008A&A...486..143P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:57:53

2008A&A...486..143P - Astronomy and Astrophysics, volume 486, 143-149 (2008/7-4)

Very-high-energy emission from M82.

PERSIC M., REPHAELI Y. and ARIELI Y.

Abstract (from CDS):

Spurred by the improved measurement sensitivity in the very-high-energy (VHE: ≥100GeV) γ-ray band, we assess the feasibility of detection of the nearby starburst galaxy M82. VHE emission is expected to be predominantly from the decay of neutral pions which are produced in energetic proton interactions with ambient protons. An estimate of VHE emission from this process is obtained by an approximate, semi-quantitative calculation, and also by a detailed numerical treatment based on a convection-diffusion model for energetic electron and proton propagation and energy losses. All relevant hadronic and leptonic processes are considered, gauged by the measured synchrotron radio emission from the inner disk region. We estimate an integrated flux f(≥100GeV)∼2x10–12cm–2s–1, possibly detectable by the current northern-hemisphere imaging air Cherenkov telescopes, MAGIC and VERITAS, and a good candidate for detection with the upcoming MAGIC II telescope. We also estimate f(≥100MeV)∼10–8cm–2s–1, a level of emission that can be detected by GLAST/LAT based on the projected sensitivity for a one-year observation.

Abstract Copyright:

Journal keyword(s): acceleration of particles - ISM: cosmic rays - galaxies: general - galaxies: starburst - stars: formation - mechanisms: non-thermal radiation

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2931 2
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1
3 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5336 6
4 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2683 4

    Equat.    Gal    SGal    Ecl

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2020.07.12-12:57:53

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