3-11 July 2007
Merida, Mexico
Mexico/General timezone
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OG 2.1, OG 2.2

Place

Location: Merida, Mexico
Room: Uxmal + Tulum (Holiday Inn)
Date: 4 Jul 08:30 - 10:00

Timetable | Contribution List

Displaying 7 contributions out of 7
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.1
We searched for gamma-ray sources in the EGRET data from cycle 1 to cycle 9. We used a 2D maximum likelihood method similar to that developed for the Egret 3EG catalog. Two interstellar background models, due to cosmic-ray interactions in the Milky Way, were used: a model where the most recent HI, CO, and inverse Compton maps were linearly fitted to the EGRET gamma rays and a model obtained fr ... More
Presented by Mr. Jean-Marc CASANDJIAN on 4/7/2007 at 13:30
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.1
Milagro is a TeV gamma-ray observatory with a ~2 sr field of view and a >90% duty factor. The large field of view and long observation time make Milagro ideal for surveying large regions of the Northern Hemisphere sky. A previous all-sky survey searched for point sources (Atkins, R, et al., 2004, ApJ, 608, 680-685), but the analysis is easily adaptable to look for intermediate-scale (~10 deg ... More
Presented by Gary WALKER on 4/7/2007 at 14:30
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.2
Recent results from the HESS gamma-ray telescope have shown the presence of both a diffuse, extended flux of gamma rays above ~0.4 TeV and discrete sources in and near the Galactic Centre. Here, we put forward a possible explanation in terms of the diffusion of cosmic-ray protons from a succession of supernova remnants ( SNR ) in the SgrA* region of the Galaxy plus a probable contribution from ... More
Presented by Prof. Anatoly ERLYKIN on 4/7/2007 at 13:42
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.2
The detection of TeV gamma-rays from the direction of the Galactic Centre is one of the most exciting discoveries in recent years. Observations by the H.E.S.S. system of imaging atmospheric Cherenkov telescopes provide the most precise available data on this source in the energy range 150 GeV - 30 TeV. The vicinity of the kinetic centre of our galaxy harbours numerous objects which could poten ... More
Presented by Christopher VAN ELDIK on 4/7/2007 at 13:54
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.1
Diffuse gamma radiation produced in the interaction of cosmic-ray particles with matter and radiation in the Galaxy can be used for probing the origin of cosmic rays. The large field of view and long observation time of the Milagro Gamma-Ray Observatory-- a water Cherenkov detector that operates continuously, detecting extensive air showers from the overhead sky -- is an ideal instrument f ... More
Presented by Dr. Petra HUENTEMEYER on 4/7/2007 at 14:18
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.2
The rapidly varying non-thermal X-ray emission observed from Sgr A* points to particle acceleration taking place close to the supermassive black hole. The TeV gamma-ray source HESS J1745-290 is coincident with Sgr A* and may be closely related to the X-ray emission. Simultaneous X-ray and TeV observations are required to elucidate the relationship between these two objects. Here we report on j ... More
Presented by Dr. Jim HINTON on 4/7/2007 at 14:06
Type: Oral Session: OG 2.1, OG 2.2
Track: OG.2.2
Recent all-sky surveys by the Tibet AS and the MILAGRO Observatories have identified several new potential TeV Gamma-Ray sources.One of these sources (MGRO J2019+37) is positionally coincident with a Pulsar Wind Nebula G75.1+0.1, ,and the second source (MGRO J1909+06) is nearby the Supernova Remnant G40.5-0.5. MGRO J2019+37 was observed by the VERITAS Observatory during November 2006, a ... More
Presented by Prof. David KIEDA on 4/7/2007 at 14:42
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