C. Favuzzi
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View article: Search for stellar collapse with the MACRO detector at Gran Sasso
Search for stellar collapse with the MACRO detector at Gran Sasso Open
The first MACRO supermodule commenced data taking in February 1989. Two complementary trigger and readout systems have been used to monitor the horizontal scintillation counters, which contain 42 tonnes ({approximately}1 ktonne for the ful…
View article: Unresolved Gamma-Ray Sky through its Angular Power Spectrum
Unresolved Gamma-Ray Sky through its Angular Power Spectrum Open
The gamma-ray sky has been observed with unprecedented accuracy in the last decade by the Fermi -large area telescope (LAT), allowing us to resolve and understand the high-energy Universe. The nature of the remaining unresolved emission [u…
View article: A gamma-ray determination of the Universe’s star formation history
A gamma-ray determination of the Universe’s star formation history Open
Gamma rays reveal the Universe's history How many stars have formed in the Universe, and when did they do so? These fundamental questions are difficult to answer because there are systematic uncertainties in converting the light we observe…
View article: VERITAS and Fermi-LAT Observations of TeV Gamma-Ray Sources Discovered by HAWC in the 2HWC Catalog
VERITAS and Fermi-LAT Observations of TeV Gamma-Ray Sources Discovered by HAWC in the 2HWC Catalog Open
The High Altitude Water Cherenkov (HAWC) collaboration recently published their 2HWC catalog, listing 39 very high energy (VHE; >100 GeV) gamma-ray sources based on 507 days of observation. Among these, 19 sources are not associated with p…
View article: Investigating the Nature of Late-time High-energy GRB Emission through Joint Fermi/Swift Observations
Investigating the Nature of Late-time High-energy GRB Emission through Joint Fermi/Swift Observations Open
We use joint observations by the Swift X-ray Telescope (XRT) and the Fermi Large Area Telescope (LAT) of gamma-ray burst (GRB) afterglows to investigate the nature of the long-lived high-energy emission observed by Fermi LAT. Joint broadba…
View article: Fermi-LAT Observations of LIGO/Virgo Event GW170817
Fermi-LAT Observations of LIGO/Virgo Event GW170817 Open
We present the Fermi Large Area Telescope (LAT) observations of the binary neutron star merger event GW170817 and the associated short gamma-ray burst (SGRB) GRB 170817A detected by the Fermi Gamma-ray Burst Monitor. The LAT was entering t…
View article: Erratum: “Search for Gamma-Ray Emission from the Coma Cluster with Six Years of Fermi-LAT Data” (2016, ApJ, 819, 149)
Erratum: “Search for Gamma-Ray Emission from the Coma Cluster with Six Years of Fermi-LAT Data” (2016, ApJ, 819, 149) Open
The naming of the sources in Tables 3 and 4 in the Appendix of the published paper did not follow IAU conventions; the corrected nomenclature will enter the NASA Extragalactic Database. Tables 3 and 4 should thus read as follows. (Table Pr…
View article: Search for Gamma-Ray Emission from Local Primordial Black Holes with the Fermi Large Area Telescope
Search for Gamma-Ray Emission from Local Primordial Black Holes with the Fermi Large Area Telescope Open
Black holes with masses below approximately 10 15 g are expected to emit gamma-rays with energies above a few tens of MeV, which can be detected by the Fermi Large Area Telescope (LAT). Although black holes with these masses cannot be form…
View article: Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar Open
Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date, radio pulsations have been detected from all rotation-powered MSPs. In …
View article: 3FHL: The Third Catalog of Hard Fermi-LAT Sources
3FHL: The Third Catalog of Hard Fermi-LAT Sources Open
We present a catalog of sources detected above 10 GeV by the Fermi Large Area Telescope (LAT) in the first 7 years of data using the Pass 8 event-level analysis. This is the Third Catalog of Hard Fermi -LAT Sources (3FHL), containing 1556 …
View article: Fermi Observations of the LIGO Event GW170104
Fermi Observations of the LIGO Event GW170104 Open
We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger (BBH) event GW170104. No candidate electromagnetic counterpart was detected by either GBM or LAT. A detaile…
View article: Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV
Search for Extended Sources in the Galactic Plane Using Six Years of Fermi-Large Area Telescope Pass 8 Data above 10 GeV Open
The spatial extension of a γ -ray source is an essential ingredient to determine its spectral properties, as well as its potential multiwavelength counterpart. The capability to spatially resolve γ -ray sources is greatly improved by the n…
View article: The Fermi Galactic Center GeV Excess and Implications for Dark Matter
The Fermi Galactic Center GeV Excess and Implications for Dark Matter Open
The region around the Galactic Center (GC) is now well established to be brighter at energies of a few GeV than what is expected from conventional models of diffuse gamma-ray emission and catalogs of known gamma-ray sources. We study the G…
View article: Characterizing the population of pulsars in the inner Galaxy with the Fermi Large Area Telescope
Characterizing the population of pulsars in the inner Galaxy with the Fermi Large Area Telescope Open
An excess of $γ$-ray emission from the Galactic Center (GC) region with respect to predictions based on a variety of interstellar emission models and $γ$-ray source catalogs has been found by many groups using data from the {\it Fermi} Lar…
View article: Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope
Cosmic-ray electron-positron spectrum from 7 GeV to 2 TeV with the Fermi Large Area Telescope Open
We present a measurement of the cosmic-ray electron+positron spectrum between 7 GeV and 2 TeV performed with almost seven years of data collected with the Fermi Large Area Telescope. We find that the spectrum is well fit by a broken power …
View article: Search for Cosmic-Ray Electron and Positron Anisotropies with Seven Years of Fermi Large Area Telescope Data
Search for Cosmic-Ray Electron and Positron Anisotropies with Seven Years of Fermi Large Area Telescope Data Open
The Large Area Telescope on board the Fermi Gamma-ray Space Telescope has collected the largest ever sample of high-energy cosmic-ray electron and positron events since the beginning of its operation. Potential anisotropies in the arrival …
View article: Gamma-Ray Blazars within the First 2 Billion Years
Gamma-Ray Blazars within the First 2 Billion Years Open
The detection of high-redshift ( ) blazars enables the study of the evolution of the most luminous relativistic jets over cosmic time. More importantly, high-redshift blazars tend to host massive black holes and can be used to constrain th…
View article: Observations of M31 and M33 with the Fermi Large Area Telescope: A Galactic Center Excess in Andromeda?
Observations of M31 and M33 with the Fermi Large Area Telescope: A Galactic Center Excess in Andromeda? Open
The Fermi Large Area Telescope (LAT) has opened the way for comparative studies of cosmic rays (CRs) and high-energy objects in the Milky Way (MW) and in other, external, star-forming galaxies. Using 2 yr of observations with the Fermi LAT…
View article: Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares
Fermi-LAT Observations of High-energy Behind-the-limb Solar Flares Open
We report on the Fermi -LAT detection of high-energy emission from the behind-the-limb (BTL) solar flares that occurred on 2013 October 11, and 2014 January 6 and September 1. The Fermi -LAT observations are associated with flares from act…
View article: SEARCHING THE GAMMA-RAY SKY FOR COUNTERPARTS TO GRAVITATIONAL WAVE SOURCES: FERMI GAMMA-RAY BURST MONITOR AND LARGE AREA TELESCOPE OBSERVATIONS OF LVT151012 AND GW151226
SEARCHING THE GAMMA-RAY SKY FOR COUNTERPARTS TO GRAVITATIONAL WAVE SOURCES: FERMI GAMMA-RAY BURST MONITOR AND LARGE AREA TELESCOPE OBSERVATIONS OF LVT151012 AND GW151226 Open
We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger event GW151226 and candidate LVT151012. At the time of the LIGO triggers on LVT151012 and GW151226, GBM was…
View article: FERMI LARGE AREA TELESCOPE DETECTION OF EXTENDED GAMMA-RAY EMISSION FROM THE RADIO GALAXY FORNAX A
FERMI LARGE AREA TELESCOPE DETECTION OF EXTENDED GAMMA-RAY EMISSION FROM THE RADIO GALAXY FORNAX A Open
We report the Fermi Large Area Telescope detection of extended γ -ray emission from the lobes of the radio galaxy Fornax A using 6.1 years of Pass 8 data. After Centaurus A, this is now the second example of an extended γ -ray source attri…
View article: MINUTE-TIMESCALE >100 MeV γ-RAY VARIABILITY DURING THE GIANT OUTBURST OF QUASAR 3C 279 OBSERVED BY FERMI-LAT IN 2015 JUNE
MINUTE-TIMESCALE >100 MeV γ-RAY VARIABILITY DURING THE GIANT OUTBURST OF QUASAR 3C 279 OBSERVED BY FERMI-LAT IN 2015 JUNE Open
On 2015 June 16, Fermi -LAT observed a giant outburst from the flat spectrum radio quasar 3C 279 with a peak >100 MeV flux of ∼3.6 × 10 −5 photons cm −2 s −1 , averaged over orbital period intervals. It is historically the highest γ -ray f…
View article: FERMI-LAT OBSERVATIONS OF THE LIGO EVENT GW150914
FERMI-LAT OBSERVATIONS OF THE LIGO EVENT GW150914 Open
The Fermi Large Area Telescope (LAT) has an instantaneous field of view (FoV) covering of the sky and it completes a survey of the entire sky in high-energy gamma-rays every 3 hr. It enables searches for transient phenomena over time…
View article: FERMI LAT STACKING ANALYSIS OF SWIFT LOCALIZED GRBs
FERMI LAT STACKING ANALYSIS OF SWIFT LOCALIZED GRBs Open
We perform a comprehensive stacking analysis of data collected by the Fermi Large Area Telescope (LAT) of γ -ray bursts (GRBs) localized by the Swift spacecraft, which were not detected by the LAT but which fell within the instrument’s fie…
View article: THE FIRST FERMI LAT SUPERNOVA REMNANT CATALOG
THE FIRST FERMI LAT SUPERNOVA REMNANT CATALOG Open
To uniformly determine the properties of supernova remnants (SNRs) at high energies, we have developed the first systematic survey at energies from 1 to 100 GeV using data from the Fermi Large Area Telescope (LAT). Based on the spatial ove…
View article: DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA
DEVELOPMENT OF THE MODEL OF GALACTIC INTERSTELLAR EMISSION FOR STANDARD POINT-SOURCE ANALYSIS OF FERMI LARGE AREA TELESCOPE DATA Open
Most of the celestial γ rays detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope originate from the interstellar medium when energetic cosmic rays interact with interstellar nucleons and photons. Convent…
View article: Search for Spectral Irregularities due to Photon–Axionlike-Particle Oscillations with the Fermi Large Area Telescope
Search for Spectral Irregularities due to Photon–Axionlike-Particle Oscillations with the Fermi Large Area Telescope Open
We report on the search for spectral irregularities induced by oscillations between photons and axionlike-particles (ALPs) in the γ-ray spectrum of NGC 1275, the central galaxy of the Perseus cluster. Using 6 years of Fermi Large Area Tele…
View article: Resolving the Extragalactic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>γ</mml:mi></mml:math>-Ray Background above 50 GeV with the Fermi Large Area Telescope
Resolving the Extragalactic-Ray Background above 50 GeV with the Fermi Large Area Telescope Open
The Fermi Large Area Telescope (LAT) Collaboration has recently released a catalog of 360 sources detected above 50 GeV (2FHL). This catalog was obtained using 80 months of data re-processed with Pass 8, the newest event-level analysis, wh…
View article: Measurement of the high-energy gamma-ray emission from the Moon with the Fermi Large Area Telescope
Measurement of the high-energy gamma-ray emission from the Moon with the Fermi Large Area Telescope Open
We have measured the gamma-ray emission spectrum of the Moon using the data collected by the Large Area Telescope onboard the Fermi satellite during its first seven years of operation, in the energy range from 30 MeV up to a few GeV. We ha…