397 citations · 863 across the 8 of their papers we have counts for
8 papers
First detection of >100 MeV gamma rays associated with a behind-the-limb solar flare
Melissa Pesce-Rollins, Nicola Omodei, Vahe' Petrosian +4
We report the first detection of >100 MeV gamma rays associated with a behind-the-limb solar flare, which presents a unique opportunity to probe the underlying physics of high-ener…
Determination of Acceleration Mechanism Characteristics Directly and Non-Parametrically from Observations: Application to Supernova Remnants
Vahé Petrosian, Qingrong Chen
We have developed an inversion method for determination of the characteristics of the acceleration mechanism directly and non-parametrically from observations, in contrast to the u…
Determination of Stochastic Acceleration Model Characteristics in Solar Flares
Qingrong Chen, Vahé Petrosian
Following our recent paper (Petrosian & Chen 2010), we have developed an inversion method to determine the basic characteristics of the particle acceleration mechanism directly and…
Plasmoid Ejections and Loop Contractions in an Eruptive M7.7 Solar Flare: Evidence of Particle Acceleration and Heating in Magnetic Reconnection Outflows
Wei Liu, Qingrong Chen, Vahe' Petrosian
Where particle acceleration and plasma heating take place in relation to magnetic reconnection is a fundamental question for solar flares. We report analysis of an M7.7 flare on 20…
A Non-radial Eruption in a Quadrupolar Magnetic Configuration with a Coronal Null
Xudong Sun, Todd Hoeksema, Yang Liu +2
We report one of several homologous non-radial eruptions from NOAA active region (AR) 11158 that are strongly modulated by the local magnetic field as observed with the Solar Dynam…
Impulsive Phase Coronal Hard X-ray Sources in an X3.9 Class Solar Flare
Qingrong Chen, Vahe Petrosian
[Abridged]We present analysis of a pair of unusually energetic coronal hard X-ray (HXR) sources detected by RHESSI during the impulsive phase of an X3.9 class solar flare on 2003 N…
Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation
Xudong Sun, J. Todd Hoeksema, Yang Liu +4
We report the evolution of magnetic field and its energy in NOAA active region 11158 over 5 days based on a vector magnetogram series from the Helioseismic and Magnetic Imager (HMI…
Derivation of Stochastic Acceleration Model Characteristics for Solar Flares From RHESSI Hard X-Ray Observations
Vahe Petrosian, Qingrong Chen
The model of stochastic acceleration of particles by turbulence has been successful in explaining many observed features of solar flares. Here we demonstrate a new method to obtain…