Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24740
Campo DC | Valore | Lingua |
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dc.contributor.author | MEREGHETTI, Sandro | en_US |
dc.contributor.author | Kuiper, L. | en_US |
dc.contributor.author | Tiengo, A. | en_US |
dc.contributor.author | Hessels, J. | en_US |
dc.contributor.author | Hermsen, W. | en_US |
dc.contributor.author | Stovall, K. | en_US |
dc.contributor.author | POSSENTI, ANDREA | en_US |
dc.contributor.author | Rankin, J. | en_US |
dc.contributor.author | Esposito, P. | en_US |
dc.contributor.author | Turolla, R. | en_US |
dc.contributor.author | Mitra, D. | en_US |
dc.contributor.author | Wright, G. | en_US |
dc.contributor.author | Stappers, B. | en_US |
dc.contributor.author | Horneffer, A. | en_US |
dc.contributor.author | Oslowski, S. | en_US |
dc.contributor.author | Serylak, M. | en_US |
dc.contributor.author | Grießmeier, J. -M. | en_US |
dc.date.accessioned | 2020-05-12T13:51:21Z | - |
dc.date.available | 2020-05-12T13:51:21Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24740 | - |
dc.description.abstract | Observations of PSR B0943+10 with XMM-Newton and the LOFAR, LWA, and Arecibo radio telescopes in 2014 November confirm the synchronous X-ray/radio switching between a radio-bright (B) mode and a radio-quiet (Q) mode, in which the X-ray flux is a factor ∼2.4 higher than in the B-mode. We discovered X-ray pulsations during the B-mode (0.5-2 keV pulsed fraction of (38 ± 5)%) and confirm their presence in the Q-mode, where the pulsed fraction increases with energy from ∼20% to ∼65% at 2 keV. We found marginal evidence for an increase in the X-ray pulsed fraction during the B-mode on a timescale of hours. The X-ray spectrum during the Q-mode requires a fit with either a power law plus blackbody or the sum of two blackbodies, while in the B-mode it is well fit by a single blackbody (a single power law is rejected). In the Q-mode, the pulsed emission has a blackbody spectrum with temperature ∼ 3.4× {10}<SUP>6</SUP> K and the unpulsed emission is a power law with photon index ∼2.5, while during the B-mode both the pulsed and unpulsed emission can be fit by either a blackbody or a power law with similar values of temperature and index. A Chandra image does not show diffuse X-ray emission. These results support a scenario in which unpulsed non-thermal emission, likely magnetospheric, and pulsed thermal emission from a small polar cap (∼1500 m<SUP>2</SUP>) with a non-dipolar field (∼10<SUP>14</SUP> G) are present during both modes and vary in a correlated way. This is broadly consistent with the partially screened gap model and does not necessarily imply global magnetospheric rearrangements to explain the mode switching. | en_US |
dc.language.iso | eng | en_US |
dc.title | A Deep Campaign to Characterize the Synchronous Radio/X-Ray Mode Switching of PSR B0943+10 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/831/1/21 | en_US |
dc.identifier.scopus | 2-s2.0-84994654253 | en_US |
dc.identifier.isi | 000387024900003 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/831/1/21 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 831 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 21 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...831...21M | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0003-3259-7801 | - |
crisitem.author.orcid | 0000-0001-5902-3731 | - |
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