4
Conferences
false
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ICN-UNAM
1482bc95ee34f0461176da21871284c8
3
icrc2007@icrc2007.unam.mx
30th International Cosmic Ray Conference
The 30th International Cosmic Ray Conference will be held from July 3, 2007 to July 11, 2007 in Merida, Yucatan, Mexico.
True
Merida, Mexico
2007-07-03T08:00:00
2007-07-11T19:00:00
2005-09-26T05:04:53
2024-04-12T17:46:55
Mexico/General
Dr.
IGeof-UNAM
40af9343b8bb9d18708b4f0252d5f53c
1305
false
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0
Oral
Observation of orbital modulation of the VHE emission from the binary system LS 5039 with HESS
Mr.
LPNHE IN2P3/CNRS - Universités Paris VI/VII
0d6d690ce59d8be513eb410d1d022d19
Mr.
LPNHE IN2P3/CNRS - Universités Paris VI/VII
0d6d690ce59d8be513eb410d1d022d19
Merida, Mexico
Uxmal + Tulum (Holiday Inn)
2007-07-06T09:30:00
2007-07-06T09:42:00
00:12
The binary system LS 5039 was serendipously with the High Energy
Stereoscopic system (H.E.S.S.)
during the scan of the inner galactic plane in 2004. Deeper observations
were carried out in 2005, and brought clear evidence for TeV emission
perodicity. This is the highest energy periodic source known so far.
The observed flux modulation is attributed to a modulated absorption
of the VHE gamma-ray emission of the compact object through pair
creation on the stellar photosphere.
Spectral modulation is also observed in this system; this might have
several origins such as modulation of particle acceleration or reprocessing
of high energy photons towards lower energy through cascading.
We will present detailed studies of the source variability (flux and
spectral shape), the timescales compared to other wavelengths, and
briefly review the implications for existing
emission models.
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More information about the venue
http://www.icrc2007.unam.mx/
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