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116 papers · 1 filter
Intensity Conserving Spectral Fitting
James A. Klimchuk, Spiros Patsourakos, Durgesh Tripathi
The detailed shapes of spectral line profiles provide valuable information about the emitting plasma, especially when the plasma contains an unresolved mixture of velocities, tempe…
Testing the Early Mars H2-CO2 Greenhouse Hypothesis with a 1-D Photochemical Model
Natasha Batalha, Shawn D. Domagal-Goldman, Ramses Ramirez +1
A recent study by Ramirez et al. (2014) demonstrated that an atmosphere with 1.3-4 bar of CO2 and H2O, in addition to 5-20% H2, could have raised the mean annual and global surface…
The composition of the protosolar disk and the formation conditions for comets
K. Willacy, C. Alexander, M. Ali-Dib +12
Conditions in the protosolar nebula have left their mark in the composition of cometary volatiles, thought to be some of the most pristine material in the solar system. Cometary co…
25 Years of Self-Organized Criticality: Numerical Detection Methods
R. T. James McAteer, Markus J. Aschwanden, Michaila Dimitropoulou +5
The detection and characterization of self-organized criticality (SOC), in both real and simulated data, has undergone many significant revisions over the past 25 years. The explos…
Search for Early Gamma-ray Production in Supernovae Located in a Dense Circumstellar Medium with the Fermi LAT
M. Ackermann, I. Arcavi, L. Baldini +108
Supernovae (SNe) exploding in a dense circumstellar medium (CSM) are hypothesized to accelerate cosmic rays in collisionless shocks and emit GeV gamma rays and TeV neutrinos on a t…
Space Detectors for Gamma Rays (100 MeV - 100 GeV): from EGRET to Fermi LAT
David J. Thompson
The design of spaceborne high-energy (E>100 MeV) gamma-ray detectors depends on two principal factors: (1) the basic physics of detecting and measuring the properties of the gamma…