On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044
The <i>INTEGRAL</i> and <i>Swift</i> hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3-2050, IGR J12123-5802 and...
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| Autores principales: | , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2013
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85382 |
| Aporte de: |
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I19-R120-10915-85382 |
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dspace |
| institution |
Universidad Nacional de La Plata |
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I-19 |
| repository_str |
R-120 |
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SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas X-rays: individual: IGR J19552+0044 X-rays: individual: Swift J1212.3-5806 (also known as: IGR J12123-5802 and 1RXS J121222.7-580118) X-rays: individual: Swift J1907.3-2050 (also known as: V1082 Sgr) X-rays: individual: WISE J195512.47+004536.6 |
| spellingShingle |
Ciencias Astronómicas X-rays: individual: IGR J19552+0044 X-rays: individual: Swift J1212.3-5806 (also known as: IGR J12123-5802 and 1RXS J121222.7-580118) X-rays: individual: Swift J1907.3-2050 (also known as: V1082 Sgr) X-rays: individual: WISE J195512.47+004536.6 Bernardini, Federico Martino, D. de Mukai, K. Falanga, Maurizio Andruchow, Ileana Bonnet Bidaud, J. M. Masetti, N. Gonzalez Buitrago, D. H. Mouchet, M. Tovmassian, Gagik On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| topic_facet |
Ciencias Astronómicas X-rays: individual: IGR J19552+0044 X-rays: individual: Swift J1212.3-5806 (also known as: IGR J12123-5802 and 1RXS J121222.7-580118) X-rays: individual: Swift J1907.3-2050 (also known as: V1082 Sgr) X-rays: individual: WISE J195512.47+004536.6 |
| description |
The <i>INTEGRAL</i> and <i>Swift</i> hard X-ray surveys have identified a large number of new sources, among which many are proposed as Cataclysmic Variables (CVs). Here, we present the first detailed study of three X-ray-selected CVs, Swift J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 based on <i>XMM-Newton</i>, <i>Suzaku</i>, <i>Swift</i> observations and groundbased optical and archival (near-IR) nIR/IR data. Swift J1907.3-2050 is highly variable from hours to months-years at all wavelengths. No coherent X-ray pulses are detected but rather transient features. The X-ray spectrum reveals a multitemperature optically thin plasma absorbed by complex neutral material and a soft blackbody component arising from a small area. These characteristics are remarkably similar to those observed inmagnetic CVs. A suprasolar abundance of nitrogen could arise from nuclear processed material from the donor star. Swift J1907.3-2050 could be a peculiar magnetic CV with the second longest (20.82 h) binary period. IGR J12123-5802 is variable in the X-rays on a time-scale of ≳ 7.6 h. No coherent pulsations are detected, but its spectral characteristics suggest that it could be a magnetic CV of the Intermediate Polar (IP) type. IGR J19552+0044 shows two X-ray periods, ~1.38 h and ~1.69 h and an X-ray spectrum characterized by a multitemperature plasma with little absorption. We derive a low accretion rate, consistent with a CV below the orbital period gap. Its peculiar nIR/IR spectrum suggests a contribution from cyclotron emission. It could either be a pre-polar or an IP with the lowest degree of asynchronism. |
| format |
Articulo Articulo |
| author |
Bernardini, Federico Martino, D. de Mukai, K. Falanga, Maurizio Andruchow, Ileana Bonnet Bidaud, J. M. Masetti, N. Gonzalez Buitrago, D. H. Mouchet, M. Tovmassian, Gagik |
| author_facet |
Bernardini, Federico Martino, D. de Mukai, K. Falanga, Maurizio Andruchow, Ileana Bonnet Bidaud, J. M. Masetti, N. Gonzalez Buitrago, D. H. Mouchet, M. Tovmassian, Gagik |
| author_sort |
Bernardini, Federico |
| title |
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| title_short |
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| title_full |
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| title_fullStr |
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| title_full_unstemmed |
On the nature of the hard X-ray sources SWIFT J1907.3-2050, IGR J12123-5802 and IGR J19552+0044 |
| title_sort |
on the nature of the hard x-ray sources swift j1907.3-2050, igr j12123-5802 and igr j19552+0044 |
| publishDate |
2013 |
| url |
http://sedici.unlp.edu.ar/handle/10915/85382 |
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