Russian Aviation and Space Agency

1
HENDs survey of solar flares.  Workshop The
First year of HEND operations on the NASA Odyssey
Mars Orbiter Moscow, Russia May 20-22, 2002
2
During a period since 05/01/2001 through
11/30/2001
186 gtM1 flares were observed by GOES
94 fell into HENDs data gaps
29 were observed by HEND
1 showed an apparent neutron signal
7 have a hint of fast neutrons
3
Earths and Mars orbits scheme
4
Comparison between the same 1h piece of data
taken by GOES-8 and HEND Outer Scintillator
(left).
5
The mysterious feature a flare with simultaneous
neutron signal as seen by GOES (below) and by
HEND.