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TAPIR Seminar

Friday, February 7, 2020
2:00pm to 3:00pm
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Cahill 370
X-ray polarization of neutron stars and black holes
Ilaria Caiazzo, Burke Fellow, TAPIR, Caltech,

X-ray polarimetry is quickly becoming a reality: the ISRO POLIX and the NASA IXPE are planned to launch in 2021, while eXTP, the Chinese X-ray observatory, has recently entered its phase B and will be in orbit by the end of 2025. The emission from accreting neutron stars and black holes, as well as from the highly magnetized neutron stars called magnetars, is dominated by X-rays, and therefore, compact objects will be among the main targets for these upcoming polarimeters. Modeling of the X-ray emission from these objects is complicated by the presence of strong magnetic and gravitational fields, and of rapid bulk motions of the emitting plasma; however, observations of the polarized emission can provide insight on the accretion geometry and on the structure and strength of the magnetic field.

For more information, please contact JoAnn Boyd by phone at x4280 or by email at joann@caltech.edu.