Fermi-LAT data shows gamma-ray emission from low-luminosity AGN with the subthreshold population signal consistent with star-formation dominance and individually detected sources likely powered by jets via synchrotron self-Compton emission under weakly magnetized particle-dominated conditions.
hub
Fermi-LAT improved Pass~8 event selection
12 Pith papers cite this work. Polarity classification is still indexing.
12
Pith papers citing it
abstract
The current version of the Fermi Large Area Telescope data (P8R2) has been publicly available since June 2015, with the caveat that the residual background of all event classes, except ULTRACLEANVETO, was not fully isotropic: it was enhanced by a factor ~2 at 1-3 GeV within ~20 deg of the Ecliptic compared to the poles. By investigating the residual background using data only, we were able to find two sources of residual background: one due to non-interacting heavy ions and one due to cosmic-ray electrons leaking through the ribbons of the Anti-Coincidence Detector, the latter source being responsible for the background anisotropy. A set of simple cuts allows us to reject these events while losing less than 1% of the SOURCE class acceptance. This new selection has been used to produce a new version of the LAT data (P8R3).
hub tools
citation-role summary
method 1
citation-polarity summary
roles
method 1polarities
use method 1representative citing papers
Fermi LAT data analysis detects a time-evolving ~162-day periodic GeV signal from 4FGL J1913.2+0512 linked to SS 433, prominent in 2008-2018 but diminished afterward, indicating multi-year evolution in gamma-ray production efficiency or geometry.
Multi-tracer cross-correlations of Fermi gamma-ray data with DES galaxies and weak lensing detect the unresolved gamma-ray background at 10.31 sigma, confirming its extragalactic origin with source properties distinct from resolved populations.
Fermi-LAT and CO data support a hadronic PeVatron scenario for LHAASO J1912+1014u with proton index ~2.2 and total energy (1-5) x 10^49 erg above 1 GeV.
PSR J2101-4802 is a transitional millisecond pulsar with a ~1-day orbit, 0.15 solar mass He-WD companion, and large orbital period derivative that links redback-like systems to detached binaries.
Reanalysis of Fermi-LAT observations indicates that gamma-ray emission from NGC 2403 and NGC 3424 originates from supernova ejecta and an obscured AGN, respectively, rather than star formation activity.
Fermi-LAT data show Vela Jr GeV emission matches the H.E.S.S. shell template with index 1.77, and a hybrid model statistically outperforms pure leptonic for the broadband SED.
High-significance measurement of EBL optical depth in 19 redshift bins from Fermi-LAT blazar spectra, consistent with existing models.
The 4FGL-DR4 catalog updates the prior release with 14 years of Fermi-LAT observations, adding 546 new point sources and revising parameters, associations, and light curves for a total of 7194 gamma-ray sources.
HAWC data extend the VHE gamma-ray spectrum of gamma Cygni SNR to higher energies, tightening constraints on the maximum particle acceleration energy.
Analysis of an unidentified Fermi gamma-ray source shows inconclusive results with a mild spectral preference for dark matter annihilation over a pulsar origin.
citing papers explorer
-
Characterizing the Gamma-ray Emission from Low-Luminosity AGN
Fermi-LAT data shows gamma-ray emission from low-luminosity AGN with the subthreshold population signal consistent with star-formation dominance and individually detected sources likely powered by jets via synchrotron self-Compton emission under weakly magnetized particle-dominated conditions.
-
Temporal evolution of the periodic GeV signal from 4FGL J1913.2+0512 and analysis of the SS 433 / W50 lobes
Fermi LAT data analysis detects a time-evolving ~162-day periodic GeV signal from 4FGL J1913.2+0512 linked to SS 433, prominent in 2008-2018 but diminished afterward, indicating multi-year evolution in gamma-ray production efficiency or geometry.
-
Multi-Tracer Cross-Correlations of the Unresolved $\gamma$-Ray Sky
Multi-tracer cross-correlations of Fermi gamma-ray data with DES galaxies and weak lensing detect the unresolved gamma-ray background at 10.31 sigma, confirming its extragalactic origin with source properties distinct from resolved populations.
-
Hadronic Scenario for Galactic PeVatron LHAASO J1912+1014u Supported by Fermi-LAT $\gamma$-ray Data and FUGIN CO Data
Fermi-LAT and CO data support a hadronic PeVatron scenario for LHAASO J1912+1014u with proton index ~2.2 and total energy (1-5) x 10^49 erg above 1 GeV.
-
The GMRT High-Resolution Southern Sky Survey for pulsars and transients -- VIII: Orbital Variability and the Evolution of a 1-Day He-WD Millisecond Pulsar J2101-4208
PSR J2101-4802 is a transitional millisecond pulsar with a ~1-day orbit, 0.15 solar mass He-WD companion, and large orbital period derivative that links redback-like systems to detached binaries.
-
Probing the $\gamma$-ray Emission Origin of Two Star-forming Galaxies NGC 2403 and NGC 3424 with the Fermi-LAT
Reanalysis of Fermi-LAT observations indicates that gamma-ray emission from NGC 2403 and NGC 3424 originates from supernova ejecta and an obscured AGN, respectively, rather than star formation activity.
-
GeV gamma-ray emission in the field of the shell-type supernova remnant Vela Jr revisited
Fermi-LAT data show Vela Jr GeV emission matches the H.E.S.S. shell template with index 1.77, and a hybrid model statistically outperforms pure leptonic for the broadband SED.
-
A New Measurement of the Extragalactic Background Light using 15\,yr of {\it Fermi}-Large Area Telescope Data
High-significance measurement of EBL optical depth in 19 redshift bins from Fermi-LAT blazar spectra, consistent with existing models.
-
Fermi Large Area Telescope Fourth Source Catalog Data Release 4 (4FGL-DR4)
The 4FGL-DR4 catalog updates the prior release with 14 years of Fermi-LAT observations, adding 546 new point sources and revising parameters, associations, and light curves for a total of 7194 gamma-ray sources.
-
Modeling the non-thermal emission of the gamma Cygni Supernova Remnant up to the highest energies
HAWC data extend the VHE gamma-ray spectrum of gamma Cygni SNR to higher energies, tightening constraints on the maximum particle acceleration energy.
-
Deeper analysis of Fermi-LAT unassociated 4FGL J2112.5-3043 for possible identification
Analysis of an unidentified Fermi gamma-ray source shows inconclusive results with a mild spectral preference for dark matter annihilation over a pulsar origin.
- A Precise Measurement of the Fermi-LAT Galactic Center Excess Morphology and Spectrum