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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20160121T103000
DTEND;TZID=Atlantic/Canary:20160121T113000
UID:iactalks-864
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/864
CREATED:2016-01-21T10:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:A message from Crab pulsar in Teraelectronvolt fonts
DESCRIPTION:A message from Crab pulsar in Teraelectronvolt fonts\nDr. Marin
 a Manganaro\n\nUsing ~320h of good-quality Crab data from Feb 2007 to Apr 
  2014 the MAGIC telescopes measured the most energetic pulsed photons  fro
 m a pulsar to date. The new results obtained probe the Crab Pulsar as the 
 most compact TeV  accelerator known to date. The remarkable detection of p
 ulsed emission up to 1.5 TeV revealed by  MAGIC imposes severe constraints
  on where and how the underlying  electron  population produces 
  gamma-rays  at  these  energies. Such TeV pulsed photons  
 require a parent population of electrons with a Lorentz factor of at  leas
 t 5E6. These results strongly suggest IC scattering off low-energy photons
  as  the emission mechanism and a gamma-ray production region in the vicin
 ity  of the light cylinder, requiring a revision of the state-of-the-art m
 odels proposed to explain  how and where gamma-ray pulsed emission from 10
 0 MeV to 1.5 TeV are  produced. Investigating the extension of the very hi
 gh-energy spectral tail of the  Crab Pulsar at energies above 400 GeV, the
  pulse profile was found to  show two narrow peaks synchronized with those
  measured in the GeV energy range.  The spectra of the two peaks follow tw
 o different power-law functions from 70 GeV up to 1.5 TeV and connect smoo
 thly with the spectra measured  above 10 GeV by the Large Area Telescope (
 LAT) on board the Fermi satellite.
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