ICRC2015

Session

Parallel GA02 GAL

30 Jul 2015, 11:00

World Forum

849. Study of the diffuse gamma ray emission from the Galactic plane with ARGO-YBJ

Dr Lingling Ma (Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences,)

30/07/2015, 11:00

GA-EX

Oral contribution

The data recorded by ARGO-YBJ in more than 5 years have been analyzed todetermine the diffuse gamma ray emission from the Galactic plane. The spatial distribution of the diffuse gamma rays and their energy spectra at Galactic longitudes 25^o < l <100^o o and Galactic latitudes |b|<5^o have been studied. The regions with 40^o< l <100^o and 65^o < l <85^o have been focused, where Milagro...

247. TeV Gamma-Ray Emission Observed from Geminga by HAWC

Joshua Wood (University of Maryland, College Park)

30/07/2015, 11:15

GA-EX

Oral contribution

Geminga is a radio-quiet pulsar ~250 parsecs from Earth that was first discovered as a GeV gamma-ray source and then identified as a pulsar. Milagro observed an extended TeV source spatially consistent with Geminga. HAWC observes a similarly extended source. Observations of Geminga’s flux and extension will be presented.

737. TeV Observations of the Galactic Plane with HAWC and Joint Analysis of GeV Data from Fermi

Mr Hao Zhou (Michigan Technological University)

30/07/2015, 11:30

GA-EX

Oral contribution

A number of Galactic sources emit GeV-TeV gamma rays that are produced through leptonic and/or hadronic mechanisms. Spectral analysis in this energy range is crucial in order to understand the emission mechanisms. The HAWC Gamma-Ray Observatory, with a large field of view and location at 19º N latitude, is surveying the Galactic Plane from high Galactic longitudes down to near the Galactic...

1268. RCW 86 - A shell-type supernova remnant in TeV gamma-rays

Ira Jung-Richardt

30/07/2015, 11:45

GA-EX

Oral contribution

RCW 86 (also known as G315.4-2.3 or MSH 14-3) is a young supernova remnant about 1800 years old with a shell-like structure in the optical, radio, infrared and X-rays regimes with a diameter of about 40'. We will show detailed morphological and spectral studies of the TeV gamma-ray data measured with the H.E.S.S. telescope system. These studies reveal for the first time a shell-like...

423. RCW 86 an extended SNR viewed at high energy with the new Fermi-LAT Pass 8 event reconstruction

Benjamin Condon (CNRS)

30/07/2015, 12:00

GA-EX

Oral contribution

Supernovae Remnants (SNRs) are thought to be the primary source of galactic cosmic rays observed on Earth. Detected in radio, infrared, X-rays and at high (GeV) and very high energy (TeV) gamma rays, RCW 86 is a good candidate for efficient particle acceleration and might be the remnant of the historical supernova SN 185. Using more than 6 years of data acquired by the Fermi Large Area...

1299. Search for new supernova remnant shells in the Galactic plane with H.E.S.S.

Gerd Puehlhofer (IAAT)

30/07/2015, 12:15

GA-EX

Oral contribution

Amongst the population of TeV gamma-ray sources detected with the High Energy Stereoscopic System (H.E.S.S.) in the Galactic plane, clearly identified supernova remnant (SNR) shells constitute a small but precious source class. TeV-selected SNRs are prime candidates for efficient cosmic-ray acceleration. In this work, we present new SNR candidates that have been identified in the entire...