Parallel Session E
- Zhen CAO (IHEP, Beijing, China)
52. TeV gamma-ray variability and duty cycle of Mrk 421 as determined by 3 Years of Milagro monitoring
Dr Barbara Patricelli (Astronomy Institute - UNAM)
The blazar Mrk 421 is one of the brightest extragalactic TeV gamma-ray sources. Like the other TeV blazars, it presents flaring episodes in both X-rays and TeV gamma-rays. A correlation has been observed between the emissions in these two energy bands, although not all X-ray flares have been associated with a simultaneous increase in the TeV flux. Milagro was a TeV gamma-ray detector located...
Dr David Staszak (McGill)
VERITAS is an array of four imaging atmospheric Cherenkov telescopes near Tucson, Arizona and is one of the world's most sensitive detectors of very high energy (VHE: >100 GeV) gamma rays and cosmic rays. The scientific reach of VERITAS covers the study of both Extragalactic and Galactic objects and the search for astrophysical Dark Matter. In this talk I will discuss the status of VERITAS...
Dr Antonio Marinelli (UNAM - Physics Institute)
The High Altitude Water Cherenkov (HAWC) observatory is a TeV gamma-ray and cosmic-ray detector currently under construction at an altitude of 4100 m close to volcano Sierra Negra in the state of Puebla, Mexico. The HAWC observatory is an extensive air-shower array comprised of 300 optically-isolated water Cherenkov detectors (WCDs). Each WCD contains ~200,000 liters of filtered water and four...
Dr Silvia Vernetto (OATO - INAF)
A large fraction of unidentified TeV gamma-ray sources observed in the Galaxy are spatially extended, raising the question of why there are so few point-like VHE sources. The study of these objects is important because the extended emission could be the result of cosmic ray interactions with the ambient medium which provides the target to produce TeV gamma-rays. Since the instrument...
Dr Satyendra Thoudam (Department of Astrophysics, Radboud University Nijmegen, Nijmegen, The Netherlands)
Recent detailed analysis of the Fermi-LAT data has discovered two giant gamma-ray emission regions, the so-called Fermi bubbles, extending up to ~ 50 degree in Galactic latitude above and below the Galactic center with a width of ~ 40 degree in longitude. The origin of the gamma-ray emission is not clearly understood. Suggested explanations include injection of cosmic-ray nuclei from the...
Mr Edoardo Striani (INAF-IAPS, Università di Roma Tor Vergata & INFN Roma Tor Vergata)
The Crab Nebula, one of the most studied objects in high energy astrophysics, was discovered to produce strong and short gamma-ray flares by the AGILE satellite. More recently a slower and less intense component of enhanced emission was deteceted in gamma rays. This transient gamma-ray emission leads to substantially revise current models of particle acceleration in Pulsar Wind Nebulae. The...