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

Published online by Cambridge University Press:  04 June 2018

S. Mereghetti ,
L. Kuiper ,
A. Tiengo ,
J. Hessels ,
W. Hermsen ,
K. Stovall ,
A. Possenti ,
J. Rankin ,
P. Esposito  and
R. Turolla
...Show all authors
S. Mereghetti
Affiliation:
INAF-IASF Milano, Italy
L. Kuiper
Affiliation:
SRON, Utrecht, The Netherlands
A. Tiengo
Affiliation:
INAF-IASF Milano, Italy Scuola Universitaria Superiore IUSS Pavia, Italy INFN, Sezione di Pavia, Italy
J. Hessels
Affiliation:
ASTRON, Dwingeloo, The Netherlands Anton Pannekoek Institute for Astronomy, Univ. of Amsterdam, The Netherlands
W. Hermsen
Affiliation:
SRON, Utrecht, The Netherlands Anton Pannekoek Institute for Astronomy, Univ. of Amsterdam, The Netherlands
K. Stovall
Affiliation:
Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USA
A. Possenti
Affiliation:
INAF - Osservatorio Astronomico di Cagliari, Selargius, Italy
J. Rankin
Affiliation:
Physics Department, University of Vermont, Burlington, VT 05405, USA
P. Esposito
Affiliation:
Anton Pannekoek Institute for Astronomy, Univ. of Amsterdam, The Netherlands
R. Turolla
Affiliation:
Dipart. di Fisica e Astronomia, Università di Padova, Italy MSSL-UCL, Holmbury St. Mary, Dorking, UK
D. Mitra
Affiliation:
Physics Department, University of Vermont, Burlington, VT 05405, USA National Centre for Radio Astrophysics, Ganeshkhind, Pune, India Janusz Gil Institute of Astronomy, Univ. of Zielona Góra, Poland
G. Wright
Affiliation:
Jodrell Bank Centre for Astrophysics, Univ. of Manchester, UK
B. Stappers
Affiliation:
Jodrell Bank Centre for Astrophysics, Univ. of Manchester, UK
A. Horneffer
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany
S. Oslowski
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany Fakultät für Physik, Universität Bielefeld, Germany currently at Swinburne Univ. of Technology, Australia
M. Serylak
Affiliation:
Dept. of Physics & Astronomy, Univ. of the Western Cape, Bellville, South Africa Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS, Nançay, France
J.-M. Griessmeier
Affiliation:
Station de Radioastronomie de Nançay, Observatoire de Paris, CNRS, Nançay, France LPC2E - Université d’Orléans, France
M. Rigoselli
Affiliation:
INAF-IASF Milano, Italy Università di Milano Bicocca, Milano, Italy
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Abstract

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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.

Keywords

pulsars: generalX-rays: individual (PSR B0943+10)stars: neutron

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