Registro completo de metadatos
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Castelletti, Gabriela Marta | - |
| dc.creator | Dubner, Gloria Mabel | - |
| dc.date | 2017-08-08T19:40:58Z | - |
| dc.date | 2017-08-08T19:40:58Z | - |
| dc.date | 2005-12 | - |
| dc.date | 2017-08-08T14:32:05Z | - |
| dc.date.accessioned | 2019-04-29T15:52:52Z | - |
| dc.date.available | 2019-04-29T15:52:52Z | - |
| dc.date.issued | 2005-12 | - |
| dc.identifier | Castelletti, Gabriela Marta; Dubner, Gloria Mabel; A multi-frequency study of the spectral index distribution in the SNR CTB 80; EDP Sciences; Astronomy and Astrophysics; 440; 1; 12-2005; 171-177 | - |
| dc.identifier | 0004-6361 | - |
| dc.identifier | http://hdl.handle.net/11336/22052 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/304490 | - |
| dc.description | We have conducted a study at radio wavelengths of the spectral behaviour of the supernova remnant (SNR) CTB 80. Based on an homogenised data set of integrated flux densities, we calculated for the whole SNR a radio index alpha = -0.36 ± 0.02 . The shape of the global spectrum suggests absorption by ionized gas in the interstellar medium (ISM) along the line of sight. Spatial spectral variations across the SNR are investigated based on high-angular resolution data at 240, 324, 610, and 1380 MHz using different techniques. The three extended arms associated with this SNR show a clear indication of spectral steepening when moving outwards from the central nebula, with variations of up to delta alpha ~ - 0.9 . However, while the spectral steepening is smooth along the eastern arm, the northern and soutwestern arms include locally flatter structures, which in all cases coincide with radio, IR and optical emission enhancements. We interpret this spectral property as the result of the combination of two different particle populations: aging relativistic electrons injected by PSR B1951+32 and particles accelerated at the sites where the SNR shock front encounters interstellar gas inhomogeneities. Concerning the central nebula, the angular resolution of the available database does not permit a detailed spectral study of the core region, i.e. the 45´´ region around PSR B1951+32, where we can only confirm an average spectral index α = 0.0 . The surrounding 8´ plateau nebula has an alpha > - 0.25, with a peak of alpha = - 0.29 coincident with a secondary maximun located at the termination of a twisted filament that trails to the east, behind the pulsar. | - |
| dc.description | Fil: Castelletti, Gabriela Marta. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina | - |
| dc.description | Fil: Dubner, Gloria Mabel. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | EDP Sciences | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2005/34/aa2537-04/aa2537-04.html | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0507716 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361:20042537 | - |
| dc.rights | info:eu-repo/semantics/openAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.subject | CTB 80 | - |
| dc.subject | PSR B1951+32 | - |
| dc.subject | ISM: SUPERNOVA REMNANTS | - |
| dc.subject | RADIO CONTINUUM | - |
| dc.subject | Astronomía | - |
| dc.subject | Ciencias Físicas | - |
| dc.subject | CIENCIAS NATURALES Y EXACTAS | - |
| dc.title | A multi-frequency study of the spectral index distribution in the SNR CTB 80 | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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