Event calendar file
3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
Support
OG 2.3
Place
Location: Merida, Mexico
Room: Uxmal + Tulum (Holiday Inn)
Date:
9 Jul 10:30 - 11:55
Timetable | Contribution List
Displaying 7
contributions
out of
7
Detection of very high energy gamma-rays from the BL Lac object PG 1553+113 with the MAGIC telescope
The MAGIC telescope has observed very high energy gamma-ray emission from the BL Lac
object PG 1553+113 in 2005 and 2006 at an overall significance is 8.8 sigma in 18.8h.
The light curve shows no significant flux variations on a daily time-scale. The flux
level during 2005 was, however, significantly higher compared to 2006. The
differential energy spectrum between ~90 GeV and 500 GeV is well
... More
Presented by Dr. Robert WAGNER
on
9/7/2007
at
15:30
Clusters of galaxies, the largest gravitationally bound objects in the
universe, are expected to contain a significant population of hadronic
and leptonic cosmic rays. Potential sources for these particles are
merger and accretion shocks, starburst driven galactic winds and radio
galaxies. Furthermore, since galaxy clusters confine cosmic ray protons
up to energies of at least 1 PeV for a tim
... More
Presented by Dr. Wilfried DOMAINKO
on
9/7/2007
at
16:30
The high-frequency peaked BL Lac PKS 2155-304, the lighthouse of the Southern
hemisphere sky at VHE gamma-ray energies, has been followed by the H.E.S.S. array of
atmospheric Cherenkov telescopes since the first light of the project, first with a
single telescope in 2002, then with two & three telescopes in 2003, and since 2004
with the full-sensitivity four-telescope array. In this mode, a n
... More
Presented by Dr. Michael PUNCH
on
9/7/2007
at
15:42
More than forty gamma-ray sources have been detected
by atmospheric Cherenkov telescopes at TeV energies.
However, no cluster of galaxies have been proved to be
a TeV gamma-ray emitter until now, though there
are many theoretical predictions on the possible
gamma-ray fluxes from these gigantic objects
assuming various emission mechanisms.
We have observed a couple of clusters of galaxies in
... More
Presented by Mr. Ryuta KIUCHI
on
9/7/2007
at
16:42
VHE observations of the distant (z=0.186) blazar 1ES 1101-232 with H.E.S.S. are used
to constrain the extragalactic background light (EBL) in the optical to near infrared
band. As the EBL traces the galaxy formation history of the universe, galaxy
evolution models can therefore be tested with the data. In order to measure the EBL
absorption effect on a blazar spectrum, we assume that usual con
... More
Presented by Dr. Gerd PUEHLHOFER
on
9/7/2007
at
16:18
Since 1983, the Whipple 10m Gamma-ray Telescope was operated with a
full observing program. During that time, five new sources of very
high energy (VHE; E > 100 GeV) emission were discovered; spectral and
temporal characteristics of five blazars were established and many
other potential sources were studied in detail. In September 2005, the
observing program was redefined and the 10m was dedi
... More
Presented by Dr. David STEELE
on
9/7/2007
at
15:54
The understanding of mechanisms in active galactic nuclei requires the detection of a
large sample of very high energy gamma-ray objects at varying redshifts. The
gamma-astronomical researches are carrying out with SHALON mirror telescope at the
Tien-Shan high-mountain observatory since 1992. The redshifts of SHALON very high
energy gamma-ray sources range from z=0.0183 to z=1.375. The most di
... More
Presented by Prof. Vera Georgievna SINITSYNA
on
9/7/2007
at
16:06
