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Constraining the location of rapid gamma-ray flares in the FSRQ 3C 273
B. Rani, B. Lott, T. P. Krichbaum +2
We present a γ-ray photon flux and spectral variability study of the flat-spectrum radio quasar 3C 273 over a rapid flaring activity period between September 2009 to April 2010. Fi…
Gamma-ray blazars near equipartition and the origin of the GeV spectral break in 3C 454.3
Matteo Cerruti, Charles D. Dermer, Benoit Lott +2
Observations performed with the Fermi-LAT telescope have revealed the presence of a spectral break in the GeV spectrum of flat-spectrum radio quasars (FSRQs) and other low- and int…
The Fermi All-sky Variability Analysis: A list of flaring gamma-ray sources and the search for transients in our Galaxy
LAT Collaboration
In this paper we present the Fermi All-sky Variability Analysis (FAVA), a tool to systematically study the variability of the gamma-ray sky measured by the Large Area Telescope (LA…
Impulsive and Long Duration High-Energy Gamma-ray Emission From the Very Bright 2012 March 7 Solar Flares
LAT collaboration
The Fermi Large Area Telescope (LAT) observed two bright X-class solar flares on 2012 March 7, and detected gamma-rays up to 4 GeV. We detected gamma-rays both during the impulsive…
High-Energy Gamma-Ray Emission From Solar Flares: Summary of Fermi LAT Detections and Analysis of Two M-Class Flares
LAT collaboration
We present the detections of 19 solar flares detected in high-energy gamma rays (above 100 MeV) with the Fermi Large Area Telescope (LAT) during its first four years of operation.…
Equipartition Gamma-Ray Blazars and the Location of the Gamma-Ray Emission Site in 3C 279
Charles D. Dermer, Matteo Cerruti, Benoit Lott +2
Blazar spectral models generally have numerous unconstrained parameters, leading to ambiguous values for physical properties like Doppler factor delta or fluid magnetic field B'. T…
Rapid Variability: What do we learn from correlated mm-/gamma-ray variability in jets ?
B. Rani, T. P. Krichbaum, L. Fuhrmann +3
Densely time sampled multi-frequency flux measurements of the extreme BL Lac object S5 0716+714 over the past three years allow us to study its broad-band variability, and the deta…
S5 0716+714 : GeV variability study
B. Rani, T. P. Krichbaum, B. Lott +2
The GeV observations by Fermi-LAT give us the opportunity to characterize the high-energy emission (100 MeV - 300 GeV) variability properties of the BL Lac object S5 0716+714. In t…
Radio to gamma-ray variability study of blazar S5 0716+714
B. Rani, T. P. Krichbaum, L. Fuhrmann +34
We present the results of a series of radio, optical, X-ray and gamma-ray observations of the BL Lac object S50716+714 carried out between April 2007 and January 2011. The multi-fr…