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http://hdl.handle.net/20.500.12386/27283
Title: | Transitional Millisecond Pulsar Binaries | Authors: | DE MARTINO, Domitilla PAPITTO, ALESSANDRO |
Issue Date: | 2017 | Volume: | The X-ray Universe 2017 | First Page: | 7 | Abstract: | The extremely fast rotation of millisecond pulsars is the outcome of a Gyr-long accretion phase onto a neutron star of material transferred through an accretion disc from a low mass late-type companion star. After this phase during which the binary shines as a bright low-mass X-ray binary (LMXB), the mass transfer rate declines allowing the activation of a radio/gamma-ray pulsar (MSP) powered by the rapid rotation of its magnetic field. The tight link between LMXBs and MSPs was first testified in 2009 by PSRJ1023+0038 that years before was in an accretion state. The recent suprising discovery of three binary systems, dubbed transitional MSPs, switching from accretion to rotation-powered emission and viceversa has shown the existence of a peculiar intermediate evolutionary phase during which LMXB and MSP states interchange on timescales compatible with those of the variations of the mass-inflow. Transitions were observed during outburst but also in an extremely peculiar sub-luminous disc state during which both accretion and ejection may take place. The main observational properties of known and candidate systems in both disc and disc-free states and ongoing efforts to understand the coupling of accretion and ejection and the role of magnetic fields in driving outflows will be presented. | Conference Name: | The X-ray Universe 2017 | Conference Place: | Roma | Conference Date: | 6-9 giugno, 2017 | URI: | http://hdl.handle.net/20.500.12386/27283 | URL: | https://www.cosmos.esa.int/documents/332006/1402684/Dde_Martino_t.pdf https://www.cosmos.esa.int/web/xmm-newton/2017-symposium |
Bibcode ADS: | 2017xru..conf....7D | Fulltext: | open |
Appears in Collections: | 4.09 Prodotti multimediali |
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File | Description | Size | Format | |
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Dde_Martino_t.pdf | Talk | 9.12 MB | Adobe PDF | View/Open |
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