RT Journal Article
T1 MAGIC very large zenith angle observations of the Crab Nebula up to 100 TeV
A1 Barrio Uña, Juan Abel
A1 Contreras González, José Luis
A1 Fidalgo, David Friedrich Carreto
A1 Fonseca González, Mª Victoria
A1 Hoang, Kim Dinh
A1 López Moya, Marcos
A1 Peñil del Campo, Pablo
A1 Saha, Lab
A1 otros, ...
AB Aims. We measure the Crab Nebula gamma-ray spectral energy distribution in the 100 TeV energy domain and test the validity of existing leptonic emission models at these high energies.Methods. We used the novel very large zenith angle observations with the MAGIC telescope system to increase the collection area above 10 TeV. We also developed an auxiliary procedure of monitoring atmospheric transmission in order to assure proper calibration of the accumulated data. This employs recording optical images of the stellar field next to the source position, which provides a better than 10% accuracy for the transmission measurements.Results. We demonstrate that MAGIC very large zenith angle observations yield a collection area larger than a square kilometer. In only 56 h of observations, we detect the gamma-ray emission from the Crab Nebula up to 100 TeV, thus providing the highest energy measurement of this source to date with Imaging Atmospheric Cherenkov Telescopes. Comparing accumulated and archival MAGIC and Fermi/LAT data with some of the existing emission models, we find that none of them provides an accurate description of the 1 GeV to 100 TeV gamma-ray signal.
PB EDP Sciencies
SN 0004-6361
YR 2020
FD 2020-03-30
LK https://hdl.handle.net/20.500.14352/6232
UL https://hdl.handle.net/20.500.14352/6232
LA eng
NO © MAGIC Collaboration 2020. Artículo firmado por 307 autores. We would like to thank the Instituto de Astrofísica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The financial support of the German BMBF and MPG, the Italian INFN and INAF, the Swiss National Fund SNF, the ERDF under the Spanish MINECO (FPA2015-69818-P, FPA2012-36668, FPA2015-68378-P, FPA2015-69210-C6-2-R, FPA2015-69210-C6-4-R, FPA2015-69210C6-6-R, AYA2015-71042-P, AYA2016-76012-C3-1-P, ESP2015-71662-C2-2-P, FPA2017-90566-REDC), the Indian Department of Atomic Energy, the Japanese JSPS and MEXT, the Bulgarian Ministry of Education and Science, National RI Roadmap Project DO1-153/28.08.2018 and the Academy of Finland grant nr. 320045 is gratefully acknowledged. This work was also supported by the Spanish Centro de Excelencia "Severo Ochoa" SEV-2016-0588 and SEV-2015-0548, and Unidad de Excelencia "María de Maeztu" MDM-2014-0369, by the Croatian Science Foundation (HrZZ) Project IP-2016-06-9782 and the University of Rijeka Project 13.12.1.3.02, by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, the Polish National Research Centre grant UMO-2016/22/M/ST9/00382 and by the Brazilian MCTIC, CNPq and FAPERJ. This research has made use of the CTA instrument response functions provided by the CTA Consortium and Observatory, see http://www.cta-observatory.org/science/cta-performance/(version prod3b-v1) for more details.
NO ERDF under the Spanish MINECO
NO Centro de Excelencia Severo Ochoa
NO Unidad de Excelencia María de Maeztu
NO German BMBF Federal Ministry of Education & Research (BMBF)
NO MPG Max Planck Society
NO Italian INFN Istituto Nazionale di Fisica Nucleare
NO Italian INAF
NO Swiss National Fund SNF Swiss National Science Foundation (SNSF)
NO Indian Department of Atomic Energy
NO Japanese JSPS Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Japan Society for the Promotion of Science
NO MEXT Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT)
NO Bulgarian Ministry of Education and Science, National RI Roadmap Project
NO Academy of Finland
NO Croatian Science Foundation (HrZZ)
NO University of Rijeka Project
NO DFG Collaborative Research Centers German Research Foundation (DFG)
NO Polish National Research Centre
NO Brazilian MCTIC
NO CNPq National Council for Scientific and Technological Development (CNPq)
NO FAPERJ Carlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ)
DS Docta Complutense
RD 18 may 2024