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SUMMARY:Observation of orbital modulation of the VHE emission from the bin
 ary system LS 5039 with HESS
DTSTART;VALUE=DATE-TIME:20070706T143000Z
DTEND;VALUE=DATE-TIME:20070706T144200Z
DTSTAMP;VALUE=DATE-TIME:20261016T112734Z
UID:indico-contribution-1305@cern.ch
DESCRIPTION:Speakers: Mr. DE NAUROIS\, Mathieu (LPNHE IN2P3/CNRS - Univers
 ités Paris VI/VII)\nThe binary system LS 5039 was serendipously with the 
 High Energy\nStereoscopic system (H.E.S.S.)\nduring the scan of the inner 
 galactic plane in 2004. Deeper observations\nwere carried out in 2005\, an
 d brought clear evidence for TeV emission\nperodicity. This is the highest
  energy periodic source known so far.\nThe observed flux modulation is att
 ributed to a modulated absorption\nof the VHE  gamma-ray emission of the c
 ompact object through pair\ncreation on the stellar photosphere.\nSpectral
  modulation is also observed in this system\; this might have\nseveral ori
 gins such as modulation of particle acceleration or reprocessing\nof high 
 energy photons towards lower energy through cascading.\n\nWe will present 
 detailed studies of the source variability (flux and\nspectral shape)\, th
 e timescales compared to other wavelengths\, and\nbriefly review the impli
 cations for existing\nemission models.\n\nhttps://indico.nucleares.unam.mx
 /event/4/session/104/contribution/1305
LOCATION:Merida\, Mexico Uxmal + Tulum (Holiday Inn)
URL:https://indico.nucleares.unam.mx/event/4/session/104/contribution/1305
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