X-rays from the mode-switching PSR B0943+10

Authors :: Mereghetti, S.
Kuiper, L.
Tiengo, A.
Hessels, J.
Hermsen, W.
Stovall, K.
Possenti, A.
Rankin, J.
Esposito, P.
Turolla, R.
Mitra, D.
Wright, G.
Stappers, B.
Horneffer, A.
Oslowski, S.
Serylak, M.
Griessmeier, J. -M.
Rigoselli, M.
Publication Year :: 2017
Abstract: New simultaneous X-ray and radio observations of the archetypal mode-switching pulsar PSR B0943+10 have been carried out with XMM-Newton and the LOFAR, LWA and Arecibo radio telescopes in November 2014. They allowed us to better constrain the X-ray spectral and variability properties of this pulsar and to detect, for the first time, the X-ray pulsations also during the X-ray-fainter mode. The combined timing and spectral analysis indicates that unpulsed non-thermal emission, likely of magnetospheric origin, and pulsed thermal emission from a small polar cap are present during both radio modes and vary in a correlated way.<br />Comment: 4 pages, 1 figure, 1 table - To appear in the proceedings of "IAUS 337: Pulsar Astrophysics - The Next 50 Years" eds: P. Weltevrede, B.B.P. Perera, L. Levin Preston & S. Sanidas