| Name: | Aru Beri |
| Affiliation: | IISER Mohali |
| Conference ID : | ASI2024_18 |
| Title : | Fast Timing and Broadband Look at Neutron Star X-ray Binaries - Discovery of an Accreting Millisecond X-ray Pulsar |
| Authors : | Aru Beri1, Rahul Sharma1,2, Vishal Gaur1, Diego Altamirano3, Nils Andersson4, Fabian Gittins4, Thomas Celora4
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| Authors Affiliation: | 1. Aru Beri, Rahul Sharma, Vishal Gaur (IISER Mohali, Mohali, Punjab-140306, India),
2. Rahul Sharma (Raman Research Institute, Bangalore-560080, India)
3. Diego Altramirano (School of Physics and Astronomy, University of Southampton, Southampton, Hampshire-SO17 1BJ, United Kingdom)
4. Nils Andersson, Fabian Gittins, Thomas Celora (Mathematical Sciences and STAG Research Centre, University of Southampton, Southampton, Hampshire- SO17 1BJ, United Kingdom) |
| Mode of Presentation: | Oral |
| Abstract Category : | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract : | Low-mass X-ray binary systems (LMXBs) consist of a neutron star (NS) or a black hole (BH) that accretes matter from a low-mass (< 1 M☉) companion star via Roche-lobe overflow, forming an accretion disc. Accretion-powered millisecond X-ray pulsars (AMXPs) and nuclear-powered X-ray millisecond pulsars (NMXPs) belong to this class of NS-LMXBs. To date, only 25 AMXPs and about 20 confirmed NMXPs are known. All these AMXPs are transient, meaning they spend most of their time in quiescence with X-ray luminosity of Lx > 10^30 - 10^33 erg s^-1, interrupted by an occasional outburst episode. A partial overlap exists between AMXPs and NMXPs, which means some AMXPs are also NMXPs, and vice versa. Thus, AMXPs are perceived as astrophysical laboratories that could be essential to our understanding of thermonuclear burst processes. In this talk, I will present our observational results from the pilot survey of AMXPs with AstroSat, and the discovery of an intermittent AMXP. |
