2025-07-08
11:49 |
VHE gamma-ray intranight variability from BL Lacertae during the extreme flaring state of 2022
/RE23/CTA-LST Collaboration
Context: BL Lacertae (BL Lac), the archetypal blazar of its subclass and one of the most studied blazars in the last decades, has gone through a series of major multi-wavelength outbursts since 2020, resulting in its highest gamma-ray flare up to date between September and November 2022 together with those from August 2021 and October 2024. Aims: We characterise the gamma-ray and multi-wavelength emission and spectral energy distribution (SED) of BL Lac as well as their evolution during the major and extended gamma-ray and multi-wavelength flare occurring between September and November 2022. [...]
CERN-RE23-2025-006.-
Geneva : CERN, 2025
BLLac_2022_flare_7July2025: PDF;
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2025-07-01
10:32 |
Extreme Blazars Observed with MAGIC: Second Catalog Release
/ Foffano, Luca (CERN)
/RE23/CTA-LST collaboration
Extremely high-peaked BL Lac objects - also named extreme blazars - are among the most energetic and persistent extragalactic accelerators in the Universe. These sources are defined by a synchrotron emission peaking above 1017 Hz (∼ 0.3 keV) in the X-ray band [...]
CERN-RE23-2025-005.-
Geneva : CERN, 2025
2nd_MAGIC_EHBL_catalog_v0_internalreferees_v1: PDF;
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2025-06-26
12:27 |
Camera calibration of the first CTAO Larged-Size Telescope
/ Cassol, Franca (Centre National de la Recherche Scientifique (FR))
/RE23/CTA-LST Collaboration
The Cherenkov Telescope Array Observatory (CTAO), a forthcoming very-high- energy gamma-ray facility, will use the Imaging Atmospheric Cherenkov Technique (IACT) to achieve unprecedented resolution from 20 GeV to 300 TeV. Large-Sized Telescopes (LSTs) are crucial for the low-energy range [...]
CERN-RE23-2025-004.-
Geneva : CERN, 2025
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2025-03-13
15:50 |
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2025-02-27
09:50 |
VHE γ-ray observations of bright BL Lacs with the Large-Sized Telescope prototype
/RE23/CTA-LST collaboration
Context. Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based γ-ray observatory operating in the energy range from 20 GeV up to 300 TeV, with two sites in La Palma (Spain) and Paranal (Chile). [...]
CERN-RE23-2025-002.-
Geneva : CERN, 2024
LST1_AGN_Zoo_Paper_review_v0: PDF; LST1_AGN_Zoo_Paper_review_v1: PDF; LST1_AGN_Zoo_Paper_review_v2: PDF; LST1_AGN_Zoo_Paper_review_v2_authors: PDF; LST1_AGN_Zoo_Paper_review_v4: PDF;
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2025-01-30
11:53 |
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2024-11-27
16:20 |
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2024-11-27
16:14 |
GRB 221009A: Observations with LST-1 of CTAO and implications for structured jets in long gamma-ray bursts
/RE23/CTA-LST collaboration
GRB 221009A was the brightest gamma-ray burst (GRB) observed to date. Extensive coverage of its afterglow emission across the electromagnetic spectrum was performed, providing the first strong evidence of a jet with nontrivial angular structure in a long GRB. [...]
CERN-RE23-2024-006.-
Geneva : CERN, 2024
BOAT_v0: PDF; Fulltext: PDF; IR_EB: PDF; LST_GRB221009A_observations_vApJL_0: PDF; LST_GRB221009A_observations_vApJL_1: PDF; LST_GRB221009A_observations_vCollab_0-2: PDF; LST_GRB221009A_observations_vCollab_1: PDF; LST_GRB221009A_observations_vIR_1: PDF; Reply_ApJL_review_report_1: PDF;
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2024-11-07
09:59 |
Constraining the TeV gamma-ray emission of SN 2024bch: a possible type IIn-L from a RSG progenitor
/RE23/CTA-LST collaboration
We present very-high-energy, optical photometry and spectroscopic observations of SN 2024bch. We use gamma-ray observations performed with the first CTAO Large-Sized Telescope (LST-1) and optical observations with the Liverpool Telescope (LT), combined with data from public repositories to evaluate general properties of the event and of the progenitor star. [...]
CERN-RE23-2024-005.-
Geneva : CERN, 2024
A&A - referee comments: ; Fulltext: PDF; SN2024bch_Revision_journal: PDF; SN2024bch_v1: PDF; SN2024bch_v2: PDF; SN2024bch_v3-1-1: PDF; SN2024bch_v4: PDF;
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2024-10-30
19:03 |
Detection of the Geminga pulsar at energies down to 20 GeV with the LST-1 of CTAO
/RE23/CTA-LST collaboration
Context. Geminga is the third gamma-ray pulsar detected at a significance level above 5σ by Imaging Atmospheric Cherenkov Telescopes (IACTs) after the Crab and the Vela pulsars. [...]
CERN-RE23-2024-004.-
Geneva : CERN, 2024
Fulltext: PDF; Geminga_paper_after1stRevision: PDF; Geminga_paper_v3: PDF; Geminga_paper_v4: PDF; Geminga_paper_v5_comments_DM: PDF; Geminga_paper_v6: PDF; Geminga_paper_v7: PDF; Version 1 of the LST Geminga paper: PDF; Version 2 of the LST Geminga paper: PDF; coverLetter_revision1_Geminga: PDF;
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