scholarly journals High‐Energy Gamma‐Ray Observations of the Crab Nebula and Pulsar with the Solar Tower Atmospheric Cerenkov Effect Experiment

2001 ◽  
Vol 547 (2) ◽  
pp. 949-958 ◽  
Author(s):  
S. Oser ◽  
D. Bhattacharya ◽  
L. M. Boone ◽  
M. C. Chantell ◽  
Z. Conner ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Crab Nebula ◽  
High Energy ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
The Crab Nebula ◽  
Cerenkov Effect ◽  
Effect Experiment

scholarly journals High‐Energy Gamma‐Ray Observations of W Comae with the Solar Tower Atmospheric Cerenkov Effect Experiment (STACEE)

2004 ◽  
Vol 607 (2) ◽  
pp. 778-787 ◽  
Author(s):  
R. A. Scalzo ◽  
L. M. Boone ◽  
D. Bramel ◽  
J. Carson ◽  
C. E. Covault ◽  
...  
Keyword(s):  
Gamma Ray ◽  
High Energy ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
Cerenkov Effect ◽  
Effect Experiment

The ultra-high energy gamma-ray burst from the Crab Nebula observed by the Baksan EAS array

1992 ◽  
Vol 18 (4) ◽  
pp. L83-L88 ◽  
Author(s):  
V V Alexeenko ◽  
Y M Andreyev ◽  
A E Chudakov ◽  
Y S Elensky ◽  
A S Lidvansky ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Crab Nebula ◽  
High Energy ◽  
Ultra High Energy ◽  
Gamma Ray Burst ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
The Crab Nebula

A Search for Ultra–High‐Energy Gamma‐Ray Emission from the Crab Nebula and Pulsar

1997 ◽  
Vol 481 (1) ◽  
pp. 313-326 ◽  
Author(s):  
A. Borione ◽  
M. A. Catanese ◽  
M. C. Chantell ◽  
C. E. Covault ◽  
J. W. Cronin ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Crab Nebula ◽  
High Energy ◽  
Ultra High Energy ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
Gamma Ray Emission ◽  
The Crab Nebula

scholarly journals Ultra-high-energy Gamma-Ray Radiation from the Crab Pulsar Wind Nebula

2022 ◽  
Vol 924 (2) ◽  
pp. 42
Author(s):  
Lin Nie ◽  
Yang Liu ◽  
Zejun Jiang ◽  
Xiongfei Geng
Keyword(s):  
Gamma Ray ◽  
Crab Nebula ◽  
High Energy ◽  
Model Parameters ◽  
Wave Band ◽  
Crab Pulsar ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
Pulsar Wind ◽  
The Crab Nebula

Abstract It has been long debated whether the high-energy gamma-ray radiation from the Crab Nebula stems from leptonic or hadronic processes. In this work, we investigate the multiband nonthermal radiation from the Crab pulsar wind nebula with the leptonic and leptonic–hadronic hybrid models, respectively. Then we use the Markov Chain Monte Carlo sampling technology and method of sampling trace to study the stability and reasonability of the model parameters according to the recently observed results and obtain the best-fitting values of parameters. Finally, we calculate different radiative components generated by the electrons and protons in the Crab Nebula. The modeling results indicate that the pure leptonic origin model with the one-zone only can partly agree with some segments of the data from various experiments (including the PeV gamma-ray emission reported by the LHAASO and the other radiation ranging from the radio to very-high-energy gamma-ray wave band), and the contribution of hadronic interaction is hardly constrained. However, we find that the hadronic process may also contribute, especially in the energy range exceeding the PeV. In addition, it can be inferred that the higher energy signals from the Crab Nebula could be observed in the future.

Detection of High-Energy Gamma Rays from the Crab Nebula

1972 ◽  
Vol 175 ◽  
pp. L117 ◽  
Author(s):  
G. G. Fazio ◽  
H. F. Helmken ◽  
E. O'Mongain ◽  
T. C. Weekes
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
High Energy ◽  
High Energy Gamma ◽  
Energy Gamma ◽  
The Crab Nebula

scholarly journals New Constraints on Hidden Photons using Very High Energy Gamma-Rays from the Crab Nebula

2008 ◽  
Author(s):  
Hannes-Sebastian Zechlin ◽  
Dieter Horns ◽  
Javier Redondo ◽  
Felix A. Aharonian ◽  
Werner Hofmann ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
High Energy ◽  
High Energy Gamma ◽  
Very High Energy ◽  
Energy Gamma ◽  
The Crab Nebula ◽  
Very High

scholarly journals Impact of H.E.S.S. Lidar profiles on Crab Nebula data

2019 ◽  
Vol 197 ◽  
pp. 01001 ◽  
Author(s):  
Justine Devin ◽  
Johan Bregeon ◽  
Georges Vasileiadis ◽  
Yves Gallant
Keyword(s):  
Energy Range ◽  
Photon Energy ◽  
Gamma Ray ◽  
Crab Nebula ◽  
Systematic Errors ◽  
High Energy ◽  
Atmospheric Composition ◽  
Direct Impact ◽  
Energy Gamma ◽  
The Crab Nebula

The H.E.S.S. experiment in Namibia is a high-energy gamma-ray telescope sensitive in the energy range from 30 GeV to a several tens of TeV, that uses the atmospheric Cherenkov technique to detect showers developed within the atmosphere. The elastic lidar, installed on the H.E.S.S. site, allows to reduce the systematic errors related to the atmospheric composition uncertainties thanks to the estimation of the extinction profile for the Cherenkov light (300-650 nm). The latter has a direct impact on the reconstructed parameters, such as the photon energy and the source flux. In this paper we report on physics results obtained on the Crab Nebula spectrum using the lidar profiles obtained at the H.E.S.S. site.

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