PG 1553+113: Five years of observations with MAGIC
| dc.contributor.author | Antoranz Canales, Pedro | |
| dc.contributor.author | Barrio Uña, Juan Abel | |
| dc.contributor.author | Contreras González, José Luis | |
| dc.contributor.author | Fonseca González, María Victoria | |
| dc.contributor.author | Miranda Pantoja, José Miguel | |
| dc.contributor.author | Scapin, Valeria | |
| dc.date.accessioned | 2023-06-20T03:32:37Z | |
| dc.date.available | 2023-06-20T03:32:37Z | |
| dc.date.issued | 2012-03-20 | |
| dc.description | © The American Astronomical Society. Supported by INFN Padova.We thank the Instituto de Astrofisica de Canarias for the excellent working conditions at the Observatorio del Roque de los Muchachos in La Palma. The support of the German BMBF and MPG, the Italian INFN, the Swiss National Fund SNF, and the Spanish MICINN is gratefully acknowledged. This work was also supported by the Marie Curie program, by the CPAN CSD2007-00042 and MultiDark CSD2009-00064 projects of the Spanish Consolider-Ingenio 2010 programme, by the grant DO02-353 of the Bulgarian NSF, by the grant 127740 of the Academy of Finland, by the YIP of the Helmholtz Gemeinschaft, by the DFG Cluster of Excellence "Origin and Structure of the Universe," by the DFG Collaborative Research Centers SFB823/C4 and SFB876/C3, and by the Polish MNiSzW grant 745/N-HESS-MAGIC/2010/0.The Fermi LAT Collaboration acknowledges generous ongoing support from a number of agencies and institutes that have supported both the development and the operation of the LAT as well as scientific data analysis. These include the National Aeronautics and Space Administration and the Department of Energy in the United States, the Commissariat a l'Energie Atomique and the Centre National de la Recherche Scientifique/Institut National de Physique Nucleaire et de Physique des Particules in France, the Agenzia Spaziale Italiana and the Istituto Nazionale di Fisica Nucleare in Italy, the Ministry of Education, Culture, Sports, Science and Technology (MEXT), High Energy Accelerator Research Organization (KEK) and Japan Aerospace Exploration Agency (JAXA) in Japan, and the K. A. Wallenberg Foundation, the Swedish Research Council and the Swedish National Space Board in Sweden.Additional support for science analysis during the operations phase is gratefully acknowledged from the Istituto Nazionale di Astrofisica in Italy and the Centre National d' Etudes Spatiales in France. | |
| dc.description.abstract | We present the results of five years (2005-2009) of MAGIC observations of the BL Lac object PG 1553+113 at very high energies (VHEs; E > 100 GeV). Power-law fits of the individual years are compatible with a steady mean photon index Gamma = 4.27 +/- 0.14. In the last three years of data, the flux level above 150 GeV shows a clear variability (probability of constant flux < 0.001%). The flux variations are modest, lying in the range from 4% to 11% of the Crab Nebula flux. Simultaneous optical data also show only modest variability that seems to be correlated with VHE gamma-ray variability. We also performed a temporal analysis of (all available) simultaneous Fermi/Large Area Telescope data of PG 1553+113 above 1 GeV, which reveals hints of variability in the 2008-2009 sample. Finally, we present a combination of the mean spectrum measured at VHEs with archival data available for other wavelengths. The mean spectral energy distribution can be modeled with a one-zone synchrotron self-Compton model, which gives the main physical parameters governing the VHE emission in the blazar jet. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | INFN Padova | |
| dc.description.sponsorship | German BMBF | |
| dc.description.sponsorship | German MPG | |
| dc.description.sponsorship | Italian INFN | |
| dc.description.sponsorship | Swiss National Fund SNF | |
| dc.description.sponsorship | Spanish MICINN | |
| dc.description.sponsorship | Marie Curie program | |
| dc.description.sponsorship | Spanish Consolider-Ingenio 2010 programme | |
| dc.description.sponsorship | Bulgarian NSF | |
| dc.description.sponsorship | Academy of Finland | |
| dc.description.sponsorship | YIP of the Helmholtz Gemeinschaft | |
| dc.description.sponsorship | DFG Cluster of Excellence | |
| dc.description.sponsorship | DFG Collaborative Research Centers | |
| dc.description.sponsorship | Polish MNiSzW | |
| dc.description.sponsorship | Istituto Nazionale di Astrofisica in Italy | |
| dc.description.sponsorship | Centre National d' Etudes Spatiales in France | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/21279 | |
| dc.identifier.doi | 10.1088/0004-637X/748/1/46 | |
| dc.identifier.issn | 0004-637X | |
| dc.identifier.officialurl | http://dx.doi.org/10.1088/0004-637X/748/1/46 | |
| dc.identifier.relatedurl | http://iopscience.iop.org | |
| dc.identifier.relatedurl | http://arxiv.org/abs/1101.2764v4 | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/43807 | |
| dc.issue.number | 1 | |
| dc.journal.title | Astrophysical journal | |
| dc.language.iso | eng | |
| dc.publisher | IOP Publishing | |
| dc.relation.projectID | CSD2007-00042 | |
| dc.relation.projectID | CSD2009-00064 | |
| dc.relation.projectID | DO02-353 | |
| dc.relation.projectID | 127740 | |
| dc.relation.projectID | SFB823/C4 | |
| dc.relation.projectID | SFB876/C3 | |
| dc.relation.projectID | 745/N-HESS-MAGIC/2010/0 | |
| dc.rights.accessRights | open access | |
| dc.subject.cdu | 537 | |
| dc.subject.cdu | 539.1 | |
| dc.subject.keyword | Extragalactic Background Light | |
| dc.subject.keyword | Active Galactic Nuclei | |
| dc.subject.keyword | BL Lacertae Objects | |
| dc.subject.keyword | Gamma-Ray Emission | |
| dc.subject.keyword | Lac Objects | |
| dc.subject.keyword | TEV Blazars | |
| dc.subject.keyword | Multiwavelength Observations | |
| dc.subject.keyword | Sky Survey | |
| dc.subject.keyword | Telescope | |
| dc.subject.keyword | Fermi. | |
| dc.subject.ucm | Electrónica (Física) | |
| dc.subject.ucm | Electricidad | |
| dc.subject.ucm | Física nuclear | |
| dc.subject.unesco | 2202.03 Electricidad | |
| dc.subject.unesco | 2207 Física Atómica y Nuclear | |
| dc.title | PG 1553+113: Five years of observations with MAGIC | |
| dc.type | journal article | |
| dc.volume.number | 748 | |
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