Description
Solar Energetic Particles
Tycho von Rosenvinge
(NASA/Goddard Space Flight Center)
30/07/2015, 11:00
SH-EX
Oral contribution
Using observations from the High Energy Telescopes on STEREO A and B and similar observations from SoHO, near-Earth, we have identified ~250 individual solar energetic particle events that include >14 MeV protons since the beginning of the STEREO mission (Richardson, et al., Solar Physics, 2014). Between the end of December 2009, when the STEREO A and B spacecraft were, respectively, ahead...
Prof.
Leon Kocharov
(University of Oulu, Finland)
30/07/2015, 11:15
SH-EX
Oral contribution
We perform a comparative study of the time-profile morphology of solar high-energy particle emissions including relativistic electrons in three energy channels of SOHO/EPHIN, relativistic protons as registered by the worldwide network of neutron monitors, and ~100 MeV/n protons and helium in several energy channels of SOHO/ERNE. Based on numerical modeling of the interplanetary transport, we...
Dr
Alessandro Bruno
(Department of Physics, University of Bari, I-70126 Bari, Italy)
30/07/2015, 11:30
SH-EX
Oral contribution
The PAMELA satellite experiment is providing the first direct measurements of Solar Energetic Particles (SEPs) with energies from about 80 MeV to several GeV in near-Earth space, bridging the low energy data from space-based instruments and the Ground Level Enhancement (GLE) data from the worldwide network of neutron monitors. Its unique observational capabilities include the possibility of...
Mihir Desai
(SwRI)
30/07/2015, 11:45
SH-EX
Oral contribution
Our Sun accelerates ions and electrons up to near-relativistic speeds in
at least two ways; magnetic reconnection during solar flares is believed
to produce the impulsive or $^3$He-rich solar energetic particles
(SEPs), while diffusive shock acceleration at fast coronal mass ejection
- or CME-driven shock waves are thought to produce the larger gradual
SEPs. Despite recent advances in our...
Amjad Al-Sawad
(Ministry of Higher Education and Scientific Research/Iraq)
30/07/2015, 12:00
SH-EX
Oral contribution
To understand what kind of solar or interplanetary events are capable of producing solar energetic particle (SEP) events with
proton energies > 90 MeV, and where and when acceleration of such protons starts. We have selected 40 energetic proton events with intensities > 10−3cm−2 sr−1 s−1 MeV−1 at 93.8–94 MeV, detected by
the Energetic and Relativistic Nuclei and Electrons (ERNE) instrument...
Eric Christian
(NASA/GSFC)
30/07/2015, 12:15
SH-EX
Oral contribution
Over the last seventy years, solar energetic particle (SEP) ground level events (GLEs) have been observed by ground-based neutron monitors and muon telescopes at a rate of slightly more than one per year. Ground-based detectors only measure secondary particles, and matching their observations with SEP in-situ measurements at lower energies from spacecraft has been difficult. Now, the Payload...
