Polarized QPOs from the INTEGRAL polar IGRJ14536-5522 (=Swift J1453.4-5524)
| Autor: | Potter, Stephen B., Buckley, David A. H., O'Donoghue, Darragh, Romero-Colmenero, Encarni, O'Connor, James, Fourie, Piet, Evans, Geoff, Sass, Craig, Crause, Lisa, Still, Martin, Butters, O. W., Norton, A. J., Mukai, Koji |
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| Rok vydání: | 2009 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1111/j.1365-2966.2009.15944.x |
| Popis: | We report optical spectroscopy and high speed photometry and polarimetry of the INTEGRAL source IGRJ14536-5522 (=Swift J1453.4-5524). The photometry, polarimetry and spectroscopy are modulated on an orbital period of 3.1564(1) hours. Orbital circularly polarized modulations are seen from 0 to -18 per cent, unambiguously identifying IGRJ14536-5522 as a polar. Some of the high speed photometric data show modulations that are consistent with quasi-periodic oscillations (QPOs) on the order of 5-6 minutes. Furthermore, for the first time, we detect the (5-6) minute QPOs in the circular polarimetry. We discuss the possible origins of these QPOs. We also include details of HIPPO, a new high-speed photo-polarimeter used for some of our observations. Comment: Accepted for publication by MNRAS. The paper contains 7 figures and 1 table |
| Databáze: | arXiv |
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