Event calendar file
3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
Support
SH 1.8
Place
Location: Merida, Mexico
Room: Yucatan I (Fiesta Americana)
Date:
6 Jul 12:05 - 13:30
Conveners
-
- Dr. Vashenyuk, Eduard (Polar Geophysical Institute of RAS)
Timetable | Contribution List
Displaying 6
contributions
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6
Ground Level Enhancements (GLE) are more likely to occur when the Sun is
very active. The most recent GLE was a maverick. It occurred near solar
minimum, but it was a large event by historical standards, with a peak increase
exceeding 100% at some stations. This talk reports initial observations and
modeling of the GLE of December 13, 2006 based on data returned by
the “Spaceship Earth
... More
Presented by Prof. John BIEBER
on
6/7/2007
at
17:05
Observations of the Ground Level Enhancement (GLE) of 20 January 2005 are
used to investigate a commonly observed, but poorly understood feature of
this class of event. The Sanae neutron monitor observed three distinct peaks
during this event. The observations were augmented by a neutron moderated
detector, from which we could determine that the first, ephemeral peak had a
harder spectrum tha
... More
Presented by Prof. Harm MORAAL
on
6/7/2007
at
17:29
It is known from long ago that solar energetic charged particles, driven by the
geomagnetic field, are able to produce ionization at different altitudes of the
terrestrial atmosphere. Moreover, they can initiate catalytic cycles for the ozone
depletion, involving NOx (N+NO+NO2) and HOx (H, OH, HO2) components.
Nevertheless, only in recent years it was possible to compare chemical models
... More
Presented by Dr. MARISA STORINI
on
6/7/2007
at
17:53
Milagro is a ground-based TeV gamma-ray telescope in the Jemez mountains
near Los Alamos NM. Designed to image TeV gamma-ray sources, it is also
sensitive to energetic solar particles above the local geomagnetic cutoff.
It sits relatively close to the Climax neutron monitor in Colorado. Because
of their geomagnetic proximity, these two instruments can be jointly used to
construct a time-dep
... More
Presented by Mr. Trevor MORGAN
on
6/7/2007
at
18:05
Using a solar proton database for the past five solar cycles (1954-2007) we
have determined the total solar proton fluence above 10 and 30 MeV and the
number of discrete events that occurred each cycle. We find:
(1) The number of discrete events in cycles 19-22 were essentially the same;
(2) Cycles 20 and 21,at the beginning of the space era, were relatively benign
with respect to solar
... More
Presented by Dr. Margaret SHEA
on
6/7/2007
at
17:17
The previous paper showed that particles in the 20 January 2005 GLE were
probably accelerated in two distinct regions. X- and gamma-ray observations
of the RHESSI spacecraft identify these regions as a loop-like, bipolar
structure in the lower corona which accelerates the particles on a short,
ephemeral time scale to several GeV in energy, and the shock around the CME
emanating from the paren
... More
Presented by Dr. Ken MCCRACKEN
on
6/7/2007
at
17:41
