SPENDER autoencoder plus k-d tree nearest-neighbor classification on DESI spectra identifies AGN and broad-line AGN at accuracies 0.952 and 0.965, recovering sources missed by single-line diagnostics.
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Science with the Cherenkov Telescope Array
15 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
The Cherenkov Telescope Array, CTA, will be the major global observatory for very high energy gamma-ray astronomy over the next decade and beyond. The scientific potential of CTA is extremely broad: from understanding the role of relativistic cosmic particles to the search for dark matter. CTA is an explorer of the extreme universe, probing environments from the immediate neighbourhood of black holes to cosmic voids on the largest scales. Covering a huge range in photon energy from 20 GeV to 300 TeV, CTA will improve on all aspects of performance with respect to current instruments. The observatory will operate arrays on sites in both hemispheres to provide full sky coverage and will hence maximize the potential for the rarest phenomena such as very nearby supernovae, gamma-ray bursts or gravitational wave transients. With 99 telescopes on the southern site and 19 telescopes on the northern site, flexible operation will be possible, with sub-arrays available for specific tasks. CTA will have important synergies with many of the new generation of major astronomical and astroparticle observatories. Multi-wavelength and multi-messenger approaches combining CTA data with those from other instruments will lead to a deeper understanding of the broad-band non-thermal properties of target sources. The CTA Observatory will be operated as an open, proposal-driven observatory, with all data available on a public archive after a pre-defined proprietary period. Scientists from institutions worldwide have combined together to form the CTA Consortium. This Consortium has prepared a proposal for a Core Programme of highly motivated observations. The programme, encompassing approximately 40% of the available observing time over the first ten years of CTA operation, is made up of individual Key Science Projects (KSPs), which are presented in this document.
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Filtering unidentified Fermi sources and comparing to repopulated VL-II simulations yields upper limits of 4e-26 cm3/s (10 GeV) and 5e-25 cm3/s (100 GeV) on tau-pair annihilation.
The LUPM Raman lidar prototype measures aerosol extinction and backscatter at 355/532 nm and is reported to satisfy CTAO-South atmospheric-monitoring requirements after OHP field tests.
Only the hypercharge-zero fermionic electroweak triplet dark matter survives current relic density, direct detection, and indirect detection constraints among the minimal triplet extensions considered.
Simulations indicate that CTA's angular resolution and LHAASO-KM2A's large area will improve morphological separation of diffusion-based pulsar halos from simpler spatial models.
Sensitivity study forecasts that CTA can measure EBL absorption with high precision, detect IGMF signatures, and explore new parameter space for ALPs and LIV.
The Fermi-LAT second GRB catalog reports 186 detections from 2008-2018, confirming delayed high-energy emission with some events lasting over 10 ks and sampling lower fluences than before.
PKS 0346-27 displayed a prolonged 2018 gamma-ray high state with ~1.5-hour variability, harder spectrum, and SED transition from LSP to ISP class, with one-zone leptonic modeling indicating lower magnetic field, larger radius, and higher electron energies than in quiescence.
NectarCAM camera for CTAO medium-sized telescopes reports time and charge resolution performance plus calibration updates with first unit shipment planned for summer 2026.
CTAO simulations exclude Cassiopeia A, RX J1713.7-3946, and HESS J1731-347 as PeVatrons via PTS metric while HAWC J2227+610 stays inconclusive, with 100 hours required to resolve proton cut-offs near 600 TeV.
Monte Carlo simulations provide the first performance estimates for CTA in divergent pointing mode to increase field of view.
Monte Carlo simulations predict CTA sensitivity for gamma-ray detection from 20 GeV to over 300 TeV at the La Palma and Paranal sites.
The paper outlines the planned capabilities of CTA and its role in multi-messenger astronomy through synergies with other observatories.
Architecture description of a distributed storage system based on the SWMR model for combining data from KASCADE and TAIGA experiments with file and event aggregation access via web and API.
Magnetic monopoles are theoretically well-motivated but remain unobserved after extensive searches in cosmic rays and at particle colliders such as the LHC.
citing papers explorer
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Beyond traditional emission-line diagnostics: using autoencoders to uncover active galactic nuclei in DESI spectra
SPENDER autoencoder plus k-d tree nearest-neighbor classification on DESI spectra identifies AGN and broad-line AGN at accuracies 0.952 and 0.965, recovering sources missed by single-line diagnostics.
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Unidentified Gamma-ray Sources as Targets for Indirect Dark Matter Detection with the Fermi-Large Area Telescope
Filtering unidentified Fermi sources and comparing to repopulated VL-II simulations yields upper limits of 4e-26 cm3/s (10 GeV) and 5e-25 cm3/s (100 GeV) on tau-pair annihilation.
-
Development of a Raman Lidar for the Southern Site of the Cherenkov Telescope Array Observatory
The LUPM Raman lidar prototype measures aerosol extinction and backscatter at 355/532 nm and is reported to satisfy CTAO-South atmospheric-monitoring requirements after OHP field tests.
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Twilight of the WIMP: Comprehensive Phenomenology of Electroweak Triplet Dark Matter
Only the hypercharge-zero fermionic electroweak triplet dark matter survives current relic density, direct detection, and indirect detection constraints among the minimal triplet extensions considered.
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Resolving diffusion signatures in distant pulsar halos with current and future experiments
Simulations indicate that CTA's angular resolution and LHAASO-KM2A's large area will improve morphological separation of diffusion-based pulsar halos from simpler spatial models.
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Testing cosmology and fundamental physics with the Cherenkov Telescope Array
Sensitivity study forecasts that CTA can measure EBL absorption with high precision, detect IGMF signatures, and explore new parameter space for ALPs and LIV.
-
A decade of Gamma-Ray Bursts observed by $Fermi$-LAT: The 2$^{nd}$ GRB catalog
The Fermi-LAT second GRB catalog reports 186 detections from 2008-2018, confirming delayed high-energy emission with some events lasting over 10 ks and sampling lower fluences than before.
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The large gamma-ray flare of the FSRQ PKS 0346-27
PKS 0346-27 displayed a prolonged 2018 gamma-ray high state with ~1.5-hour variability, harder spectrum, and SED transition from LSP to ISP class, with one-zone leptonic modeling indicating lower magnetic field, larger radius, and higher electron energies than in quiescence.
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Towards the Deployment of the First NectarCAM, a Medium-Sized-Telescope Camera for the Cherenkov Telescope Array Observatory
NectarCAM camera for CTAO medium-sized telescopes reports time and charge resolution performance plus calibration updates with first unit shipment planned for summer 2026.
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CTAO Simulations for Potential PeVatron Candidates
CTAO simulations exclude Cassiopeia A, RX J1713.7-3946, and HESS J1731-347 as PeVatrons via PTS metric while HAWC J2227+610 stays inconclusive, with 100 hours required to resolve proton cut-offs near 600 TeV.
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The Cherenkov Telescope Array Performance in Divergent Mode
Monte Carlo simulations provide the first performance estimates for CTA in divergent pointing mode to increase field of view.
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Performance of the Cherenkov Telescope Array
Monte Carlo simulations predict CTA sensitivity for gamma-ray detection from 20 GeV to over 300 TeV at the La Palma and Paranal sites.
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Cherenkov Telescope Array Science: Multi-wavelength and multi-messenger perspectives
The paper outlines the planned capabilities of CTA and its role in multi-messenger astronomy through synergies with other observatories.
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Distributed data storage for modern astroparticle physics experiments
Architecture description of a distributed storage system based on the SWMR model for combining data from KASCADE and TAIGA experiments with file and event aggregation access via web and API.
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Magnetic Monopoles -- From Dirac to the Large Hadron Collider
Magnetic monopoles are theoretically well-motivated but remain unobserved after extensive searches in cosmic rays and at particle colliders such as the LHC.