scholarly journals The Energy Spectrum of TeV Gamma Rays from the Crab Nebula as Measured by the HEGRA System of Imaging Air Cerenkov Telescopes

2000 ◽  
Vol 539 (1) ◽  
pp. 317-324 ◽  
Author(s):  
F. A. Aharonian ◽  
A. G. Akhperjanian ◽  
J. A. Barrio ◽  
K. Bernlohr ◽  
H. Bojahr ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

scholarly journals The Spectrum of TeV Gamma Rays from the Crab Nebula

1998 ◽  
Vol 503 (2) ◽  
pp. 744-759 ◽  
Author(s):  
A. M. Hillas ◽  
C. W. Akerlof ◽  
S. D. Biller ◽  
J. H. Buckley ◽  
D. A. Carter‐Lewis ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

scholarly journals The spectrum of TeV gamma rays from the Crab Nebula

1997 ◽  
Author(s):  
J. P. Finley ◽  
S. Biller ◽  
P. J. Boyle ◽  
J. H. Buckley ◽  
A. Burdett ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

Search for steady emission of 10-TeV gamma rays from the Crab Nebula, Cygnus X-3, and Hercules X-1 using the Tibet air shower array

1992 ◽  
Vol 69 (17) ◽  
pp. 2468-2471 ◽  
Author(s):  
M. Amenomori ◽  
Z. Cao ◽  
L. K. Ding ◽  
Z. Y. Feng ◽  
K. Hibino ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Air Shower ◽  
Tev Gamma Rays ◽  
The Crab Nebula ◽  
Shower Array ◽  
Air Shower Array

Observation of TeV Gamma-rays from the Crab Nebula

1989 ◽  
pp. 245-252
Author(s):  
P. W. Kwok ◽  
M. F. Cawley ◽  
D. J. Fegan ◽  
K. G. Gibbs ◽  
A. M. Hillas ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

Observation of TeV Gamma-rays from the Crab Nebula and PSR 0531

1989 ◽  
pp. 375-382
Author(s):  
P. W. Kwok ◽  
M. F. Cawley ◽  
D. J. Fegan ◽  
K. G. Gibbs ◽  
A. M. Hillas ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

scholarly journals Observation of TeV gamma rays from the Crab nebula using the atmospheric Cerenkov imaging technique

1989 ◽  
Vol 342 ◽  
pp. 379 ◽  
Author(s):  
T. C. Weekes ◽  
M. F. Cawley ◽  
D. J. Fegan ◽  
K. G. Gibbs ◽  
A. M. Hillas ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Imaging Technique ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula

scholarly journals Observation of TeV Gamma Rays from the Crab Nebula with Milagro Using a New Background Rejection Technique

2003 ◽  
Vol 595 (2) ◽  
pp. 803-811 ◽  
Author(s):  
R. Atkins ◽  
W. Benbow ◽  
D. Berley ◽  
E. Blaufuss ◽  
J. Bussons ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Crab Nebula ◽  
Background Rejection ◽  
Tev Gamma Rays ◽  
The Crab Nebula

Hard X-ray emission from pulsar-wind nebulae

2016 ◽  
Vol 82 (5) ◽  
Author(s):  
Stephen P. Reynolds
Keyword(s):  
Energy Distribution ◽  
Gamma Rays ◽  
Crab Nebula ◽  
Cosmic Ray ◽  
Spectral Structure ◽  
Particle Spectrum ◽  
Pulsar Wind Nebulae ◽  
Pulsar Wind ◽  
Tev Gamma Rays ◽  
The Crab Nebula

Pulsar-wind nebulae emit an extremely broad spectrum of continuum radiation, from low radio frequencies to TeV gamma rays. The part of the spectral energy distribution (SED) from radio through MeV gamma rays is due to synchrotron emission from a distribution of relativistic electrons (or pairs) which can be described by one or more power laws. This spectrum exhibits that particle energy distribution, responsible also for the higher-energy (GeV–TeV) part of the SED, due to inverse-Compton upscattering of one of three photon fields: the synchrotron spectrum, the cosmic microwave background, or ambient optical/infrared photons. However, in a few sources, primary hadrons may produce GeV–TeV gamma rays through the decay of neutral pions produced in inelastic cosmic-ray collisions with thermal gas. The higher-energy end of the particle spectrum, producing synchrotron photons above approximately 10 keV, holds clues to the particle acceleration process. However, its detailed study requires imaging spectroscopy in this energy range, not available until the NuSTAR mission beginning in 2012, which performs true imaging between 3 and 78 keV with ${\sim}1^{\prime }$ angular resolution. I review NuSTAR observations of the first three pulsar-wind nebulae (PWNe) to be examined in this way: the Crab Nebula, G21.5–0.9 and MSH 15–52. All three show spectral structure not previously known: spectral steepening in certain locations and overall source shrinkage with increasing photon energy. The Crab Nebula has different shrinkage rates along the torus and along the northwest counter-jet. The latter rate is similar to that for both the other sources (FWHM $\propto E^{m}$ with $m\sim -0.2$). I discuss implications of these results for models of particle transport in PWNe.

New observations of TeV gamma-rays from the Crab Nebula using the Whipple Observatory High Resolution Camera

1990 ◽  
Vol 14 (1) ◽  
pp. 165-168 ◽  
Author(s):  
M.J. Lang ◽  
M.F. Cawley ◽  
D.J. Fegan ◽  
A.M. Hillas ◽  
P. Kwok ◽  
...  
Keyword(s):  
High Resolution ◽  
Gamma Rays ◽  
Crab Nebula ◽  
Tev Gamma Rays ◽  
The Crab Nebula
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