DETECTION OF GAMMA-RAY EMISSION FROM THE STARBURST GALAXIES M82 AND NGC 253 WITH THE LARGE AREA TELESCOPE ON FERMI

By F. C. A. Abdo, et al. 2009

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We report the detection of high-energy γ-ray emission from two starburst galaxies using data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Steady point-like emission above 200 MeV has been detected at significance levels of 6.8σ and 4.8σ, respectively, from sources positionally coincident with locations of the starburst galaxies M82 and NGC 253. The total fluxes of the sources are consistent with γ-ray emission originating from the interaction of cosmic rays with local interstellar gas and radiation fields and constitute evidence for a link between massive star formation and γ-ray emission in star-forming galaxies.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/98ba00542ca9d9bd843df6a27cb77fbd397db25e

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Citations in the corpus

GIANT GAMMA-RAY BUBBLES FROM FERMI-LAT: ACTIVE GALACTIC NUCLEUS ACTIVITY OR BIPOLAR GALACTIC WIND? (2010, background): “H E ] 1 8 O ct 2 01 0 Data from the Fermi-LAT reveal two large gamma-ray bubbles, extending 50 degrees above and below the Galactic center, with a width of about 40 degrees in longitude.”
The Nine Lives of Cosmic Rays in Galaxies (2015, methodology): “The Galactic centre itself shows two bright coincident γ-ray sources, above 1 GeV with Fermi -LAT and up to 40 TeV with H.E.S.S. (Chernyakova et al. 2011), with matching, but complex spectra, and whose origin is unclear at present.”
The CO-H2 Conversion Factor in Disc Galaxies and Mergers (2011, background): “1996; Abdo et al. 2010b) and thermal dust emission (Dame et al. 2001; Draine et al. 2007).”
The extragalactic background light and the gamma-ray opacity of the universe (2012, background): “…in the GeV regime (Abdo, A. A. et al., 2010), while the spectra of other blazars (Mrk 421, Abdo et al., 2011b), (Mrk 501, Abdo et al., 2011a) extend without any cutoff to 300 GeV (Abdo et al., 2010b), or multi-TeV energies (Krennrich et al., 2002), depending on the flaring state of the source.”
FERMI LARGE AREA TELESCOPE FIRST SOURCE CATALOG (2010, methodology): “The association between GeV γ-ray PSRs and the PWNs visible in TeV γ-rays seems well established, as has already been discussed in Abdo et al. (2010m).”
GeV OBSERVATIONS OF STAR-FORMING GALAXIES WITH THE FERMI LARGE AREA TELESCOPE (2012, methodology): “…by harder gamma-ray spectra relative to quiescent galaxies of the Local Group (Acero et al. 2009; Acciari et al. 2009; Abdo et al. 2010a; Ohm et al. 2011), and that global gammaray luminosities of galaxies likely scale quasi-linearly with SFRs (e.g. Abdo et al. 2010a,d; Lenain & Walter 2011).”
THE FERMI-LAT HIGH-LATITUDE SURVEY: SOURCE COUNT DISTRIBUTIONS AND THE ORIGIN OF THE EXTRAGALACTIC DIFFUSE BACKGROUND (2010, methodology): “This procedure is correctly implemented in Abdo et al. (2010b).”
BLAZARS AS ULTRA-HIGH-ENERGY COSMIC-RAY SOURCES: IMPLICATIONS FOR TeV GAMMA-RAY OBSERVATIONS (2011, methodology): “VHE BLAZARS AND UHECRS Of the wide variety of source classes that could potentially accelerate UHECRs, including, for example, GRBs (Waxman 1995; Vietri 1995; Murase et al. 2008a), fast rotating magnetars (Arons 2003), structure formation shocks in galaxy clusters (Norman et al. 1995; Kang et al. 19”
THE PHYSICS OF THE FAR-INFRARED–RADIO CORRELATION. I. CALORIMETRY, CONSPIRACY, AND IMPLICATIONS (2009, background): “• Our predictions for the γ-ray emission from M82 and NGC 253 are within an order of magnitude of the Fermi, VERITAS, and HESS detections.”
THE FIRST CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE (2010, methodology): “This source is associated with M82, also known as NGC 3034 and 3C 231, a starburst galaxy previously detected by the LAT (Abdo et al. 2010d).”
OBSERVATIONS OF Arp 220 USING HERSCHEL-SPIRE: AN UNPRECEDENTED VIEW OF THE MOLECULAR GAS IN AN EXTREME STAR FORMATION ENVIRONMENT (2011, result): “This range of CR rates are reasonable for a ULIRG when compared to the high CR rates of ∼ 103 times the Galactic value, derived from the observations of gamma rays in M82 and NGC 253 (Acero et al. 2009; Abdo et al. 2010).”