skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The spectrum of isotropic diffuse gamma-ray emission between 100 MeV and 820 GeV

Journal Article · · The Astrophysical Journal (Online)
; ORCiD logo; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ORCiD logo; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ORCiD logo; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ORCiD logo; ; ; ; ; ; ; ; ORCiD logo « less

We present that the γ-ray sky can be decomposed into individually detected sources, diffuse emission attributed to the interactions of Galactic cosmic rays with gas and radiation fields, and a residual all-sky emission component commonly called the isotropic diffuse γ-ray background (IGRB). The IGRB comprises all extragalactic emissions too faint or too diffuse to be resolved in a given survey, as well as any residual Galactic foregrounds that are approximately isotropic. The first IGRB measurement with the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope (Fermi) used 10 months of sky-survey data and considered an energy range between 200 MeV and 100 GeV. Improvements in event selection and characterization of cosmic-ray backgrounds, better understanding of the diffuse Galactic emission (DGE), and a longer data accumulation of 50 months allow for a refinement and extension of the IGRB measurement with the LAT, now covering the energy range from 100 MeV to 820 GeV. The IGRB spectrum shows a significant high-energy cutoff feature and can be well described over nearly four decades in energy by a power law with exponential cutoff having a spectral index of 2.32 ± 0.02 and a break energy of (279 ± 52) GeV using our baseline DGE model. In conclusion, the total intensity attributed to the IGRB is (7.2 ± 0.6) × 10–6 cm–2 s–1 sr–1 above 100 MeV, with an additional +15%/–30% systematic uncertainty due to the Galactic diffuse foregrounds.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Contributing Organization:
Fermi LAT Collaboration
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1355173
Journal Information:
The Astrophysical Journal (Online), Vol. 799, Issue 1; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 453 works
Citation information provided by
Web of Science

References (79)

Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector journal November 2013
FERMI OBSERVATIONS OF CASSIOPEIA AND CEPHEUS: DIFFUSE GAMMA-RAY EMISSION IN THE OUTER GALAXY journal January 2010
FERMI LARGE AREA TELESCOPE OBSERVATIONS OF TWO GAMMA-RAY EMISSION COMPONENTS FROM THE QUIESCENT SUN journal June 2011
FERMI OBSERVATIONS OF γ-RAY EMISSION FROM THE MOON journal October 2012
THE SECOND FERMI LARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS journal September 2013
THE FERMI LARGE AREA TELESCOPE ON ORBIT: EVENT CLASSIFICATION, INSTRUMENT RESPONSE FUNCTIONS, AND CALIBRATION journal October 2012
THE SECOND CATALOG OF ACTIVE GALACTIC NUCLEI DETECTED BY THE FERMI LARGE AREA TELESCOPE journal December 2011
The Imprint of the Extragalactic Background Light in the Gamma-Ray Spectra of Blazars journal November 2012
DETERMINATION OF THE POINT-SPREAD FUNCTION FOR THE FERMI LARGE AREA TELESCOPE FROM ON-ORBIT DATA AND LIMITS ON PAIR HALOS OF ACTIVE GALACTIC NUCLEI journal February 2013
ERRATUM: “FERMI LARGE AREA TELESCOPE STUDY OF COSMIC-RAYS AND THE INTERSTELLAR MEDIUM IN NEARBY MOLECULAR CLOUDS” (2012, ApJ, 755, 22) journal November 2013
THE FIRST FERMI -LAT CATALOG OF SOURCES ABOVE 10 GeV journal November 2013
FERMI -LAT OBSERVATIONS OF THE DIFFUSE γ-RAY EMISSION: IMPLICATIONS FOR COSMIC RAYS AND THE INTERSTELLAR MEDIUM journal April 2012
CONSTRAINTS ON THE COSMIC-RAY DENSITY GRADIENT BEYOND THE SOLAR CIRCLE FROM FERMI γ-RAY OBSERVATIONS OF THE THIRD GALACTIC QUADRANT journal December 2010
PAMELA Measurements of Cosmic-Ray Proton and Helium Spectra journal March 2011
Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S. journal October 2009
Cosmic X‐Ray Background and Earth Albedo Spectra with Swift BAT journal December 2008
THE LUMINOSITY FUNCTION OF FERMI -DETECTED FLAT-SPECTRUM RADIO QUASARS journal May 2012
THE COSMIC EVOLUTION OF FERMI BL LACERTAE OBJECTS journal December 2013
THE LARGE AREA TELESCOPE ON THE FERMI GAMMA-RAY SPACE TELESCOPE MISSION journal May 2009
THE AVERAGE STAR FORMATION HISTORIES OF GALAXIES IN DARK MATTER HALOS FROM z = 0-8 journal May 2013
A New Σ‐ D Relation and Its Application to the Galactic Supernova Remnant Distribution journal September 1998
Inverse-Compton Contribution to the Star-Forming Extragalactic Gamma-Ray Background journal July 2013
INTEGRAL observations of the cosmic X-ray background in the 5–100 keV range via occultation by the Earth journal February 2007
Observation of High-Energy Cosmic Gamma Rays journal July 1968
Constraints on the Very High Energy Emissivity of the Universe from the Diffuse G[CLC]e[/CLC]V Gamma-Ray Background journal September 1997
The Milky Way in Molecular Clouds: A New Complete CO Survey journal February 2001
The Extragalactic γ Ray Background conference January 2007
Diffuse γ-Ray Emission from Misaligned Active Galactic Nuclei journal December 2013
THE FERMI HAZE: A GAMMA-RAY COUNTERPART TO THE MICROWAVE HAZE journal June 2010
The spectrum of cosmic-ray electrons measured with H.E.S.S. journal February 2011
The pulsar contribution to the gamma-ray background journal January 2010
Circum-Galactic gas and the Isotropic Gamma-Ray Background journal December 2012
THE SPECTRUM AND MORPHOLOGY OF THE FERMI BUBBLES journal September 2014
High-energy gamma-ray results from the second small astronomy satellite journal May 1975
Diffuse gamma radiation journal June 1978
Extragalactic optical-infrared background radiation, its time evolution and the cosmic photon-photon opacity journal June 2008
Energy spectrum of diffuse component of cosmic soft γ rays journal April 1975
Gamma-ray constraints on maximum cosmogenic neutrino fluxes and UHECR source evolution models journal January 2012
HEALPix: A Framework for High‐Resolution Discretization and Fast Analysis of Data Distributed on the Sphere journal April 2005
Unveiling Extensive Clouds of Dark Gas in the Solar Neighborhood journal February 2005
The Spectrum of Diffuse Cosmic Hard X‐Rays Measured with HEAO 1 journal July 1999
CRATES: An All‐Sky Survey of Flat‐Spectrum Radio Sources
  • Healey, Stephen E.; Romani, Roger W.; Taylor, Gregory B.
  • The Astrophysical Journal Supplement Series, Vol. 171, Issue 1 https://doi.org/10.1086/513742
journal July 2007
On the Normalization of the Cosmic Star Formation History journal November 2006
The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections journal September 2005
Parameterization of \documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \usepackage[OT2,OT1]{fontenc} \newcommand\cyr{ \renewcommand\rmdefault{wncyr} \renewcommand\sfdefault{wncyss} \renewcommand\encodingdefault{OT2} \normalfont \selectfont} \DeclareTextFontCommand{\textcyr}{\cyr} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} \landscape $\gamma ,\, e^{\pm }$ \end{document} , and Neutrino Spectra Produced by p‐p Interaction in Astronomical Environments journal August 2006
The case for a low extragalactic gamma-ray background journal April 2004
Diffuse Cosmic Gamma Radiation Measured by HEAO 1 journal January 1997
High-Energy Cosmic Gamma-Ray Observations from the OSO-3 Satellite journal October 1972
Galactic and Extragalactic Radio Astronomy book January 1988
THE STAR-FORMING GALAXY CONTRIBUTION TO THE COSMIC MeV AND GeV GAMMA-RAY BACKGROUND journal April 2014
Cosmic γ-ray background from structure formation in the intergalactic medium journal May 2000
The Parkes Multibeam Pulsar Survey - VI. Discovery and timing of 142 pulsars and a Galactic population analysis journal October 2006
STATISTICS OF GAMMA-RAY POINT SOURCES BELOW THE FERMI DETECTION LIMIT journal August 2011
Isotropic Gamma-Ray Background: Cosmic-Ray-Induced Albedo from Debris in the Solar System? journal January 2009
Inverse Compton Scattering on Solar Photons, Heliospheric Modulation, and Neutrino Astrophysics journal November 2006
Effects of the Cosmic Infrared Background on Delayed High‐Energy Emission from Gamma‐Ray Bursts journal December 2007
Gamma-ray and neutrino backgrounds as probes of the high-energy universe: hints of cascades, general constraints, and implications for TeV searches journal August 2012
FERMI LARGE AREA TELESCOPE SECOND SOURCE CATALOG journal March 2012
Galactic synchrotron emission with cosmic ray propagation models journal October 2013
Gamma rays from halos around stars and the Sun journal April 2007
Gamma-ray emission from the solar halo and disk: a study with EGRET data journal January 2008
The Guaranteed Gamma-Ray Background journal August 2002
Inverse Compton Origin of the Hard X‐Ray and Soft Gamma‐Ray Emission from the Galactic Ridge journal July 2008
The spectrum of the cosmic X-ray background observed by RTXE/PCA journal November 2003
Maps of Dust Infrared Emission for Use in Estimation of Reddening and Cosmic Microwave Background Radiation Foregrounds journal June 1998
FLUX AND PHOTON SPECTRAL INDEX DISTRIBUTIONS OF FERMI -LAT BLAZARS AND CONTRIBUTION TO THE EXTRAGALACTIC GAMMA-RAY BACKGROUND journal June 2012
EGRET Observations of the Extragalactic Gamma‐Ray Emission journal February 1998
Components of the Extragalactic Gamma-Ray Background journal July 2011
Diffuse Continuum Gamma Rays from the Galaxy journal July 2000
A New Determination of the Extragalactic Diffuse Gamma‐Ray Background from EGRET Data journal October 2004
The interstellar cosmic-ray electron spectrum from synchrotron radiation and direct measurements journal September 2011
GIANT GAMMA-RAY BUBBLES FROM FERMI -LAT: ACTIVE GALACTIC NUCLEUS ACTIVITY OR BIPOLAR GALACTIC WIND? journal November 2010
The clumpiness of cold dark matter: implications for the annihilation signal journal February 2003
The Starburst Contribution to the Extragalactic γ‐Ray Background journal January 2007
Contribution to the Extragalactic Gamma-Ray Background from the Cascades of very high Energy Gamma rays from Blazars journal February 2010
Constraining the Emissivity of Ultrahigh Energy Cosmic rays in the Distant Universe with the Diffuse Gamma-Ray Emission journal July 2011
The Cosmic γ-ray Background from supernovae conference January 1997
The cosmic diffuse gamma-ray background measured with COMPTEL conference January 2000
A New Model for the Loop I (North Polar Spur) Region journal July 2007

Cited By (143)

Discovering and Locating High-Energy Extra-galactic Sources by Bayesian Mixture Modelling book August 2019
A composite model for the 750 GeV diphoton excess journal March 2016
Active galactic nuclei: what’s in a name? journal August 2017
The e-ASTROGAM mission: Exploring the extreme Universe with gamma rays in the MeV – GeV range journal June 2017
Background for a gamma-ray satellite on a low-Earth orbit journal March 2019
The Giant Radio Array for Neutrino Detection (GRAND): Science and design journal August 2019
A survey of dark matter and related topics in cosmology journal October 2016
Coincidence of a high-fluence blazar outburst with a PeV-energy neutrino event journal April 2016
High-energy neutrino astrophysics journal July 2016
Linking high-energy cosmic particles by black-hole jets embedded in large-scale structures journal January 2018
Multi-messenger astrophysics journal October 2019
The denoised, deconvolved, and decomposed Fermi γ -ray sky : An application of the D journal September 2015
Deep view of the Large Magellanic Cloud with six years of Fermi -LAT observations journal January 2016
Searching for γ -ray signature in WHSP blazars journal February 2017
A complete sample of LSP blazars fully described in γ -rays: New γ -ray detections and associations with Fermi -LAT journal August 2018
Second AGILE catalogue of gamma-ray sources journal June 2019
Galactic diffuse gamma-ray emission at TeV energy journal January 2020
High-energy cosmic neutrino puzzle: a review journal October 2015
TOMOGRAPHY OF THE FERMI -LAT γ -RAY DIFFUSE EXTRAGALACTIC SIGNAL VIA CROSS CORRELATIONS WITH GALAXY CATALOGS journal March 2015
CONFRONTING GALACTIC AND EXTRAGALACTIC γ -RAYS OBSERVED BY FERMI -LAT WITH ANNIHILATING DARK MATTER IN AN INERT HIGGS DOUBLET MODEL journal August 2015
Dark Matter Searches in the Gamma-Ray Extragalactic Background via Cross-Correlations with Galaxy Catalogs journal December 2015
Tomographic-spectral approach for dark matter detection in the cross-correlation between cosmic shear and diffuse γ-ray emission journal June 2015
Limits on dark matter annihilation signals from the Fermi LAT 4-year measurement of the isotropic gamma-ray background journal September 2015
Constraining particle dark matter using local galaxy distribution journal June 2016
Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube journal August 2016
A case for radio galaxies as the sources of IceCube's astrophysical neutrino flux journal September 2016
Fermi-LAT kills dark matter interpretations of AMS-02 data. Or not? journal January 2017
A combined astrophysical and dark matter interpretation of the IceCube HESE and throughgoing muon events journal July 2018
Searching for dark matter annihilation from individual halos: uncertainties, scatter and signal-to-noise ratios journal August 2018
Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT journal December 2018
Active galactic nuclei and the origin of IceCube's diffuse neutrino flux journal February 2019
Constraints on decaying dark matter from the isotropic gamma-ray background journal March 2019
Gamma-rays from possible disk component of dark matter journal January 2017
Ultrahard spectra of PeV neutrinos from supernovae in compact star clusters journal August 2015
Imprints of cosmic rays in multifrequency observations of the interstellar emission journal December 2017
Cross-correlation of weak lensing and gamma rays: implications for the nature of dark matter journal February 2017
The galactic isotropic γ-ray background and implications for dark matter journal June 2018
Extreme- and high-synchrotron-peaked blazars at the limit of Fermi-LAT detectability: the γ-ray spectrum of 1BIGB sources journal July 2018
Extragalactic gamma-ray background from star-forming galaxies: Will empirical scalings suffice? journal December 2018
Radio background and IGM heating due to Pop III supernova explosions journal December 2018
New synthesis models of consistent extragalactic background light over cosmic time journal January 2019
Gamma-ray luminosity function of BL Lac objects and contribution to the extragalactic gamma-ray background journal September 2019
Searching for gamma-ray emission from galaxy clusters at low redshift journal November 2019
Acceleration and propagation of ultra-high energy cosmic rays journal November 2017
Extragalactic background light measurements and applications journal March 2016
Multimessenger tests of cosmic-ray acceleration in radiatively inefficient accretion flows journal October 2019
Primordial black holes as silver bullets for new physics at the weak scale journal December 2019
Cosmological constraints on dark matter annihilation and decay: Cross-correlation analysis of the extragalactic γ -ray background and cosmic shear journal September 2016
Realistic estimation for the detectability of dark matter subhalos using Fermi-LAT catalogs journal September 2017
Modeling evolution of dark matter substructure and annihilation boost journal June 2018
Correlation of extragalactic γ rays with cosmic matter density distributions from weak gravitational lensing journal June 2018
Detection of Cross-Correlation between Gravitational Lensing and γ Rays journal March 2020
Carpet-2 Search for PeV Gamma Rays Associated with IceCube High-Energy Neutrino Events journal February 2019
Gamma-ray astrophysics journal August 2018
Development of dark disk model of positron anomaly origin journal April 2018
Indirect effects of dark matter journal October 2019
An interpretation of the cosmic ray e+ + e− spectrum from 10GeV to 3TeV measured by CALET on the ISS journal January 2019
The Spectrum of the Universe journal February 2018
Constraints on decaying dark matter from the extragalactic gamma-ray background text January 2015
IceCube neutrinos from hadronically powered gamma-ray galaxies text January 2019
Open Questions in Cosmic-Ray Research at Ultrahigh Energies journal June 2019
Evidence against Star-forming Galaxies as the Dominant Source of Icecube Neutrinos journal February 2017
KASCADE-Grande Limits on the Isotropic Diffuse Gamma-Ray Flux between 100 TeV and 1 EeV journal October 2017
Bow Ties in the Sky. II. Searching for Gamma-Ray Halos in the Fermi Sky Using Anisotropy journal November 2017
Deriving the Contribution of Blazars to the Fermi -LAT Extragalactic γ -ray Background at E > 10 GeV with Efficiency Corrections and Photon Statistics journal March 2018
Ships Passing in the Night: Spectroscopic Analysis of Two Ultra-faint Satellites in the Constellation Carina journal April 2018
Cumulative Neutrino and Gamma-Ray Backgrounds from Halo and Galaxy Mergers journal April 2018
A Multimessenger Picture of the Flaring Blazar TXS 0506+056: Implications for High-energy Neutrino Emission and Cosmic-Ray Acceleration journal August 2018
Transient High-energy Gamma-Rays and Neutrinos from Nearby Type II Supernovae journal February 2019
The Extragalactic Gamma-Ray Background from Core-dominated Radio Galaxies journal July 2019
On High-energy Particles in Accretion Disk Coronae of Supermassive Black Holes: Implications for MeV Gamma-rays and High-energy Neutrinos from AGN Cores journal July 2019
Deciphering Residual Emissions: Time-dependent Models for the Nonthermal Interstellar Radiation from the Milky Way journal December 2019
CROSS-CORRELATING THE γ -RAY SKY WITH CATALOGS OF GALAXY CLUSTERS journal January 2017
Signatures of Intra-binary Shock Emission in the Black Widow Pulsar Binary PSR J2241−5236 journal November 2018
Fermi -LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection journal August 2019
High-Energy Neutrino Astrophysics book December 2018
IceCube neutrinos from hadronically powered gamma-ray galaxies journal September 2019
Constraints on dark matter annihilation and decay from the isotropic gamma-ray background journal April 2017
Modeling evolution of dark matter substructure and annihilation boost journal February 2020
Contribution of starburst nuclei to the diffuse gamma-ray and neutrino flux journal March 2020
Measurement of redshift-dependent cross-correlation of HSC clusters and Fermi γ-rays journal February 2019
Prospects of type-II seesaw models at future colliders in light of the DAMPE e + e excess journal May 2018
Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube journal August 2015
Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data journal November 2015
Measurement of cosmic-ray electrons at TeV energies by VERITAS text January 2018
Fermi-LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection text January 2019
Constraints on Gamma-Ray and Neutrino Emission from NGC 1068 with the MAGIC Telescopes text January 2019
SED Constraints on the Highest- z Blazar Jet: QSO J0906+6930 journal March 2018
Ultrahard spectra of PeV neutrinos from supernovae in compact star clusters text January 2015
The Fermi-LAT GeV excess as a tracer of stellar mass in the Galactic bulge journal August 2018
Constraints on decaying dark matter from the extragalactic gamma-ray background journal May 2015
Carpet-2 Search for pev Gamma rays Associated with Icecube High-Energy Neutrino Events
  • Dzhappuev, D. D.; Dzaparova, I. M.; Gorbacheva, E. A.
  • ПИСЬМА В ЖУРНАЛ ЭКСПЕРИМЕНТАЛЬНОЙ И ТЕОРЕТИЧЕСКОЙ ФИЗИКИ, Vol. 109, Issue 3-4 https://doi.org/10.1134/s0370274x19040039
journal January 2019
Constraints on Ultrahigh-Energy Cosmic-Ray Sources from a Search for Neutrinos above 10 PeV with IceCube text January 2016
The e-ASTROGAM mission text January 2017
Differential limit on the extremely-high-energy cosmic neutrino flux in the presence of astrophysical background from nine years of IceCube data text January 2018
Unresolved Gamma-Ray Sky through its Angular Power Spectrum text January 2018
Using the Extragalactic Gamma-Ray Background to Constrain the Hubble Constant and Matter Density of the Universe journal September 2019
Open Questions in Cosmic-Ray Research at Ultrahigh Energies text January 2019
Gamma-ray astrophysics journal August 1983
Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S text January 2016
Acceleration and Propagation of Ultra High Energy Cosmic Rays conference January 2005
Resolving the Extragalactic $\gamma$-Ray Background above 50 GeV with the Fermi Large Area Telescope text January 2016
Open Questions in Cosmic-Ray Research at Ultrahigh Energies text January 2019
Constraints on Gamma-Ray and Neutrino Emission from NGC 1068 with the MAGIC Telescopes journal September 2019
The Origin of the Extragalactic Gamma-Ray Background and Implications for Dark-Matter Annihilation text January 2015
Limits on Dark Matter Annihilation Signals from the Fermi LAT 4-year Measurement of the Isotropic Gamma-Ray Background text January 2015
Testing the Dark Matter Scenario for PeV Neutrinos Observed in IceCube text January 2015
WIMP searches with gamma rays in the Fermi era: challenges, methods and results text January 2015
Dark matter searches in the gamma-ray extragalactic background via cross-correlations with galaxy catalogues text January 2015
IceCube neutrinos, decaying dark matter, and the Hubble constant text January 2015
Ultrahard spectra of PeV neutrinos from supernovae in compact star clusters text January 2015
Hidden Cosmic-Ray Accelerators as an Origin of TeV-PeV Cosmic Neutrinos text January 2015
Evidence against star-forming galaxies as the dominant source of IceCube neutrinos text January 2015
A Composite Model for the 750 GeV Diphoton Excess text January 2016
Extragalactic Background Light: Measurements and Applications preprint January 2016
Production of keV Sterile Neutrinos in Supernovae: New Constraints and Gamma Ray Observables text January 2016
A Case for Radio Galaxies as the Sources of IceCube's Astrophysical Neutrino Flux text January 2016
Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube text January 2016
Cosmological constraints on dark matter annihilation and decay: Cross-correlation analysis of the extragalactic $γ$-ray background and cosmic shear text January 2016
Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S text January 2016
Testing decay of astrophysical neutrinos with incomplete information text January 2016
The e-ASTROGAM mission (exploring the extreme Universe with gamma rays in the MeV-GeV range) text January 2016
Cross-correlation of weak lensing and gamma rays: implications for the nature of dark matter text January 2016
Bow Ties in the Sky II: Searching for Gamma-ray Halos in the Fermi Sky Using Anisotropy text January 2017
Linking High-Energy Cosmic Particles by Black-Hole Jets Embedded in Large-Scale Structures text January 2017
Active Galactic Nuclei: what's in a name? text January 2017
Extragalactic Gamma-ray Background from Star-forming Galaxies: Will Empirical Scalings Suffice? text January 2017
Imprints of Cosmic Rays in Multifrequency Observations of the Interstellar Emission text January 2017
Cumulative Neutrino and Gamma-Ray Backgrounds from Halo and Galaxy Mergers text January 2017
New synthesis models of consistent extragalactic background light over cosmic time text January 2018
SED constraints on the highest-$z$ blazar jet: QSO J0906+6930 text January 2018
Unexpected Dip in the Solar Gamma-Ray Spectrum text January 2018
A Multimessenger Picture of the Flaring Blazar TXS 0506+056: implications for High-Energy Neutrino Emission and Cosmic Ray Acceleration text January 2018
Neutrinophilic Dark Matter in the epoch of IceCube and Fermi-LAT text January 2018
Cosmic infrared background excess from axion-like particles and implications for multi-messenger observations of blazars text January 2018
The Giant Radio Array for Neutrino Detection (GRAND): Science and Design text January 2018
Escape of cosmic rays from the Galaxy and effects on the circumgalactic medium text January 2019
Background for a gamma-ray satellite on a low-Earth orbit text January 2019
The Extragalactic Gamma-Ray Background from Core Dominated Radio Galaxies text January 2019
Searching for gamma-ray emission from galaxy clusters at low redshift text January 2019
Detection of cross-correlation between gravitational lensing and gamma rays text January 2019
{\it Fermi}-LAT Stacking Analysis Technique: An Application to Extreme Blazars and Prospects for their CTA Detection text January 2019
Breaking a dark degeneracy: The gamma-ray signature of early matter domination text January 2019


Figures / Tables (26)


Similar Records

THE SPECTRUM OF ISOTROPIC DIFFUSE GAMMA-RAY EMISSION BETWEEN 100 MeV AND 820 GeV
Journal Article · Tue Jan 20 00:00:00 EST 2015 · Astrophysical Journal · OSTI ID:1355173

Diffuse γ-ray emission from unresolved BL Lac objects
Journal Article · Sat May 10 00:00:00 EDT 2014 · Astrophysical Journal · OSTI ID:1355173

Fermi-LAT observations of the diffuse γ-ray emission: Implications for cosmic rays and the interstellar medium
Journal Article · Mon Apr 09 00:00:00 EDT 2012 · The Astrophysical Journal · OSTI ID:1355173