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Record W2962792719 · doi:10.22323/1.358.0696

Multiwavelength observation of MAXI J1820+070 with MAGIC, VERITAS and H.E.S.S.

2019· article· en· W2962792719 on OpenAlex
John Hoang, E. Molina, Marcos López, M. Ribó, O. Blanch, J. Cortina, G. Maier, Nahee Park, M. de Naurois, E. de Oña Wilhelmi, Jean-Pierre ERNENWEIN, D. Malyshev, Alison Mitchell, S. Ohm, R. Zanin

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

fundA Canadian funder is recorded on the work.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueProceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019) · 2019
Typearticle
Languageen
FieldPhysics and Astronomy
TopicAstrophysical Phenomena and Observations
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of CanadaInstituto de Astrofísica de CanariasBundesministerium für Bildung, Wissenschaft und ForschungAustralian Research CouncilMinistério da Ciência, Tecnologia, Inovações e ComunicaçõesNational Commission on Research, Science and TechnologyCentre National de la Recherche ScientifiqueMax-Planck-GesellschaftNational Energy Research Scientific Computing CenterCommissariat à l'Énergie Atomique et aux Énergies AlternativesJapan Society for the Promotion of ScienceConselho Nacional de Desenvolvimento Científico e TecnológicoNational Research FoundationAustrian Science FundOffice of ScienceAcademy of FinlandFundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de JaneiroUniversiteit van AmsterdamMinistry of Education, Culture, Sports, Science and TechnologyUniversity of NamibiaSchweizerischer Nationalfonds zur Förderung der Wissenschaftlichen ForschungEGI FederationDeutsche ForschungsgemeinschaftInstitut National de Physique Nucléaire et de Physique des ParticulesScience and Technology Facilities CouncilHrvatska Zaklada za ZnanostKnut och Alice Wallenbergs StiftelseNarodowym Centrum NaukiEuropean Regional Development FundBundesministerium für Bildung und ForschungNational Research CentreU.S. Department of EnergySmithsonian InstitutionAlexander von Humboldt-StiftungNational Science Foundation
KeywordsPhysicsMAGIC (telescope)AstrophysicsSkyPixelAstronomyOptics

Abstract

fetched live from OpenAlex

MAXI J1820+070 is a new low-mass microquasar hosting a black hole recently discovered in X-rays by the MAXI instrument. It is the counterpart of ASASSN-18ey, discovered in optical a few days before by ASAS-SN. This source underwent a major outburst in 2018, during which it completed the typical "q-shaped" path in the hardness-intensity diagram. MAGIC, VERITAS and H.E.S.S. gamma-ray telescopes observed the sky position of MAXI J1820+070 for a total of more than 90 hours in 2018. In addition, some observations were carried out using MAGIC Central Pixel - a dedicated central pixel capable of detecting fast optical signals (10 kHz sampling rate, peak sensitivity in the U-band). This contribution presents the methods used to search for transient optical and very high energy gamma-ray emission from MAXI J1820+070, as well as the latest results in these energy ranges.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.295
Threshold uncertainty score0.808

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.014
GPT teacher head0.221
Teacher spread0.207 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it