Event calendar file
3-11 July 2007
Merida, Mexico
Mexico/General timezone
- icrc2007@icrc2007.unam.mx
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OG 2.3
Place
Location: Merida, Mexico
Room: Uxmal + Tulum (Holiday Inn)
Date:
9 Jul 08:30 - 10:00
Timetable | Contribution List
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The Very Energetic Radiation Imaging Telescope Array System (VERITAS) is an array of
four 12m diameter Imaging Atmospheric Cherenkov Technique (IACT) telescopes operated
at the base of Mt. Hopkins in southern Arizona. The four-telescope experiment started
operation in February, 2007. GeV and TeV gamma-ray observations of blazars can be
used to probe the structure and composition of their jets,
... More
Presented by Prof. Henric KRAWCZYNSKI
on
9/7/2007
at
13:30
Since the new generation of imaging atmospheric Cherenkov telescopes
came online with the commissioning of the four telescopes of the
H.E.S.S. experiment in 2004, the number of known extragalactic gamma-
ray emitters in the very high energy (VHE) domain has more than doubled.
All of the sources detected so far are active galactic nuclei and all
but one belong to the class of BL Lac objects. T
... More
Presented by Mr. Martin RAUE
on
9/7/2007
at
14:06
The low-frequency peaked BL Lac (LBL) object BL Lacertae was observed with the MAGIC telescope from August to
December 2005 (22.2 hrs), and from July to September 2006 (26.0 hrs). A very high energy (VHE) gamma-ray
signal was discovered with a 5.1 sigma excess in the 2005 data. Above 200 GeV, an integral flux of approximate by
3% of the Crab flux was measured. The differential spectrum between
... More
Presented by Mr. Masaaki HAYASHIDA
on
9/7/2007
at
14:30
The high luminosity blazar 3c279 has been discovered by the EGRET instrument on board
the CGRO. Later, intensive simultaneous monitoring of this object was done in low
energy gamma rays, X-rays and optical to probe crucial questions regarding the
emission mechanism and structure of jets. However, no ground based VHE gamma ray
experiment has been able to detect a signal from it due to its high
... More
Presented by Prof. Masahiro TESHIMA
on
9/7/2007
at
14:42
Up to now, nearly all the detected extragalactic VHE gamma-ray sources belong to the
class of high-frequency peaked BL Lac objects (HBL), which show a pronounced peak in
the hard X-ray band. All detected VHE sources show a comparable luminosity at TeV
energies.
MAGIC has started a systematic scan on X-ray bright HBL objects in the northern sky
during its cycle1 observations from January 2005
... More
Presented by Mr. Markus MEYER
on
9/7/2007
at
13:42
The VERITAS collaboration has observed the high-frequency-peaked BL Lac object 1ES 1218 +30.4 using an array
of several imaging Cherenkov telescopes located at the Fred Laurence Whipple Observatory in Southern Arizona. A
gamma-ray signal was detected with high significance for the observations taken during several months in the
2006-2007 observing season. Here we present the detection of 1ES
... More
Presented by Dr. Pascal FORTIN
on
9/7/2007
at
13:54
We have observed the BL Lac object Mrk 501, during the period Feb. 2006 - May
2006 for a total on- source duration of 65 hours using the TACTIC gamma-ray
telescope at Mt. Abu Rajasthan India. During these observations the telescope was
used in a tracking mode of its operation in order to collect maximum possible data
on the source. Detailed analysis of 65 hours of data s
... More
Presented by Dr. R. C. RANNOT
The blazar Markarian 501 (Mrk 501) was observed at energies above 100 GeV with the
MAGIC Telescope from May through July 2005. The high sensitivity of the instrument enabled
the determination of the flux and spectrum of the source on a night-by-night basis.
Throughout our observational campaign, the flux from Mrk 501 was found to vary by an
order of magnitude, and to be correlated with spe
... More
Presented by Dr. Antonio STAMERRA
on
9/7/2007
at
14:18
