The mode-switching pulsar PSR B0943+10 has been extensively studied in the radio band for many years and, more recently, it has been found to vary also in X-rays, with a flux anticorrelated with the radio emission. Here we review the results of long observations of PSR B0943+10 carried out with XMM-Newton and the LOFAR, LWA and Arecibo radio telescopes in 2014. These results support a scenario in which both unpulsed non-thermal emission, likely of magnetospheric origin, and pulsed thermal emission from a small polar cap (∼1500 m 2 ) with a strong non-dipolar magnetic field (∼ 10 14 G), are present during both radio modes and vary in intensity in a correlated way.
Mereghetti, S., Kuiper, L., Tiengo, A., Hessels, J., Hermsen, W., Stovall, K., et al. (2017). X-ray properties of the mode-switching pulsar PSR B0943+10. Intervento presentato a: International Conference Physics of Neutron Stars 2017, St. Petersburg; Russian Federation [10.1088/1742-6596/932/1/012009].
X-ray properties of the mode-switching pulsar PSR B0943+10
Rigoselli M.
2017
Abstract
The mode-switching pulsar PSR B0943+10 has been extensively studied in the radio band for many years and, more recently, it has been found to vary also in X-rays, with a flux anticorrelated with the radio emission. Here we review the results of long observations of PSR B0943+10 carried out with XMM-Newton and the LOFAR, LWA and Arecibo radio telescopes in 2014. These results support a scenario in which both unpulsed non-thermal emission, likely of magnetospheric origin, and pulsed thermal emission from a small polar cap (∼1500 m 2 ) with a strong non-dipolar magnetic field (∼ 10 14 G), are present during both radio modes and vary in intensity in a correlated way.
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