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CTA - A Project for a New Generation of Cherenkov Telescopes
Instrumentation and Methods for Astrophysics · Submitted 10 Aug 2009
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Gamma-ray spectra of astrophysical origin are rather soft thus hardly one single size telescope can cover more than 1.5 decades in energy, therefore an array of telescopes of 2,3 different sizes is required.
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The abstract, sentence by sentence
Gamma-rays provide a powerful insight into the non-thermal universe and perhaps a unique probe for new physics beyond the standard model. Current experiments are already giving results in the physics of acceleration of cosmic rays in supernova remnants, pulsar and active galactic nuclei with almost a hundred sources detected at very-high-energies so far. Despite its relatively recent appearance, very high-energy gamma-ray astronomy has proven to have reached a mature technology with fast assembling, relatively cheap and reliable telescopes. The goal of future installation is to increase the sensitivity by a factor ten compared to current installations, and enlarge the energy domain from few tens of GeV to a hundred TeV. Gamma-ray spectra of astrophysical origin are rather soft thus hardly one single size telescope can cover more than 1.5 decades in energy, therefore an array of telescopes of 2,3 different sizes is required. Hereafter, we present design considerations for a Cherenkov Telescope Array (CTA), a project for a new generation of highly automated telescopes for gamma-ray astronomy. The status of the project, technical solutions and an insight in the involved physics will be presented.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Gamma-rays provide a powerful insight into the non-thermal universe and perhaps a unique probe for new physics beyond the standard model. | background 1.00 | 0.04 | 0.05 | asserted 0.54 |
| s1 | Current experiments are already giving results in the physics of acceleration of cosmic rays in supernova remnants, pulsar and active galactic nuclei with almost a hundred sources detected at very-high-energies so far. | background 0.99 | 0.05 | 0.04 | asserted 1.00 |
| s2 | Despite its relatively recent appearance, very high-energy gamma-ray astronomy has proven to have reached a mature technology with fast assembling, relatively cheap and reliable telescopes. | background 1.00 | 0.10 | 0.05 | asserted 1.00 |
| s3 | The goal of future installation is to increase the sensitivity by a factor ten compared to current installations, and enlarge the energy domain from few tens of GeV to a hundred TeV. | future work 0.73 | 0.12 | 0.18 | asserted 0.98 |
| s4 | Gamma-ray spectra of astrophysical origin are rather soft thus hardly one single size telescope can cover more than 1.5 decades in energy, therefore an array of telescopes of 2,3 different sizes is required. | background 0.90 | 0.15 | 0.11 | asserted 1.00 |
| s5 | Hereafter, we present design considerations for a Cherenkov Telescope Array (CTA), a project for a new generation of highly automated telescopes for gamma-ray astronomy. | contribution 1.00 | 0.45 | 0.10 | asserted 0.84 |
| s6 | The status of the project, technical solutions and an insight in the involved physics will be presented. | contribution 0.96 | 0.23 | 0.06 | asserted 0.81 |
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The paper
Original abstract
Gamma-rays provide a powerful insight into the non-thermal universe and perhaps a unique probe for new physics beyond the standard model. Current experiments are already giving results in the physics of acceleration of cosmic rays in supernova remnants, pulsar and active galactic nuclei with almost a hundred sources detected at very-high-energies so far. Despite its relatively recent appearance, very high-energy gamma-ray astronomy has proven to have reached a mature technology with fast assembling, relatively cheap and reliable telescopes. The goal of future installation is to increase the sensitivity by a factor ten compared to current installations, and enlarge the energy domain from few tens of GeV to a hundred TeV. Gamma-ray spectra of astrophysical origin are rather soft thus hardly one single size telescope can cover more than 1.5 decades in energy, therefore an array of telescopes of 2,3 different sizes is required. Hereafter, we present design considerations for a Cherenkov Telescope Array (CTA), a project for a new generation of highly automated telescopes for gamma-ray astronomy. The status of the project, technical solutions and an insight in the involved physics will be presented.
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References
How the literature uses it
8 arXiv papers cite this in 8 sentences
Papers citing it · 4 sentences without a confident label
Uses its data or values 2 papers
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Assuming the projected point source sensitivity ($5σ$, 50h) of the future Cherenkov telescope array (CTA) of $F_γ(>E_γ) = (4×10^-11, 2×10^-12, 2×10^-14) ph cm^-2 s^-1$ at energies of $E_γ=(10 GeV, 100 GeV, 1 TeV)$ [ref] , we note that it will be very challenging to detect the DM annihilation signal from clusters without a Sommerfeld boost by Cherenkov telescopes.
Prospects of detecting gamma-ray emission from galaxy clusters: cosmic rays and dark matter annihilations · DM annihilation · 0.97
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We also plot in those panels the sensitivity lines for Draco of the MAGIC telescopes in stereoscopic mode [ref] and of the CTA project [ref] as given by Montecarlo simulations for 50 hours of observation time and a 5$σ$ detection level.
Impact of internal bremsstrahlung on the detection of gamma-rays from neutralinos · Introduction · 0.80
Cites it as background 2 papers
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A new era of outstanding precision will begin with the future Cherenkov Telescope Array (CTA) - the next generation of highly automated telescopes for gamma-ray astrophysics [ref] .
A Site Evaluation Campaign for a Ground Based Atmospheric Cherenkov Telescope in Romania · Introduction · 0.87
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We may conclude that it is not expected to observe any such high redshift ($z∼1$) multi-TeV $γ$-ray photons from blazars with the current or even next telescope generation such as the Cherenkov Telescope Array (CTA, [ref] ) or the Advanced Gamma-ray Imaging System (AGIS, [ref] ), but we indeed expect a promising future for sub-TeV detections at these high redshifts.
Extragalactic Background Light Inferred from AEGIS Galaxy SED-type Fractions · Summary and conclusions · 0.80
What it cites · 1 sentence without a confident label
Uses data or values from 1 paper
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On the other hand, only around 60 pulsars were recently observed by Fermi at HE GRs [ref] , and only the Crab pulsar was observed by MAGIC at VHE energies [ref] .
Fermi Large Area Telescope Bright Gamma-ray Source List · Low-energy physics (sub-50 GeV) · 0.83
Cites as background 1 paper
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Current theoretical limits are discussed in [ref] .
Performance Limits for Cherenkov Instruments · Improved angular and energy resolution · 0.92
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