Journal articles

Synchronous X-ray and Radio Mode Switches: a Rapid Global Transformation of the Pulsar Magnetosphere

W. Hermsen ¹ J. W. T. Hessels ² L. Kuiper ¹ J. van Leeuwen ² D. Mitra ³ J. de Plaa ¹ J. M. Rankin ⁴ B. W. Stappers ⁵ G. A. E. Wright ⁶ R. Basu ³ A. Alexov ⁷ T. Coenen ⁸ Jean-Mathias Griessmeier ^{9, 10} T. E. Hassall ⁵ A. Karastergiou ¹¹ E. Keane ¹² V. I. Kondratiev ¹³ M. Kramer ¹⁴ M. Kuniyoshi ¹⁴ A. Noutsos ¹⁴ M Serylak ^{9, 10} M Pilia ¹³ C. Sobey ¹⁴ P. Weltevrede ⁵ K. Zagkouris ¹¹ A. Asgekar ¹³ I. M. Avruch ¹ F. Batejat ¹⁵ M.E. Bell ¹⁶ M.R. Bell ¹⁴ M. J. Bentum ¹³ G. Bernardi ¹⁷ P. Best ¹⁸ L. Birzan ¹⁹ A. Bonafede ²⁰ F. Breitling ²¹ J. Broderick ¹⁶ M. Bruggen ²⁰ H. R. Butcher ¹³ B. Ciardi ²² S. Duscha ¹³ J. Eisloffel ²³ H. Falcke ^{13, 14, 24} R. Fender ¹⁶ C. Ferrari ²⁵ W. Frieswijk ¹³ M.A. Garrett ^{13, 19} F. de Gasperin ²⁶ E. de Geus ²⁷ A. W. Gunst ¹³ G. Heald ¹³ M. Hoeft ²³ A. Horneffer ²² M. Iacobelli ¹⁹ G. Kupper ¹³ P. Maat ¹³ G. Macario ²⁵ S. Markoff ⁸ J. P. Mckean ¹³ M. Mevius ¹³ J. Miller-Jones ⁸ R. Morganti ^{13, 28} H Munk ¹³ E. Orrù ¹³ H. Paas ²⁹ M Pandey-Pommier ³⁰ V. N. Pandey ³¹ R. Pizzo ¹³ A. G. Polatidis ¹³ S. Rawlings ³² W. Reich ¹⁴ H. Rottgering ¹⁹ A. M. M. Scaife ³³ A. Schoenmakers ¹³ A. Shulevski ²⁸ J. Sluman ¹³ M. Steinmetz ²¹ Michel Tagger ⁹ Y. Tang ¹³ C. Tasse ^{34, 35} S. ter Veen ³⁶ R. Vermeulen ¹³ R.H. van de Brink ¹³ R.J. van Weeren ¹³ R. A. M. J. Wijers ⁸ M. W. Wise ^{8, 13} O. Wucknitz ³⁷ S. Yatawatta ²⁸ P. Zarka ³⁵

1 SRON - SRON Netherlands Institute for Space Research

2 UvA - University of Amsterdam [Amsterdam]

3 NCRA - National Centre for Radio Astrophysics [Pune]

4 University of Vermont [Burlington]

5 Jodrell Bank Centre for Astrophysics

6 Astronomy Centre, University of Sussex

7 STSci - Space Telescope Science Institute

8 AI PANNEKOEK - Astronomical Institute Anton Pannekoek

9 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace

10 USN - Unité Scientifique de la Station de Nançay

11 Oxford Astrophysics

12 Centre for Astrophysics and Supercomputing

13 ASTRON - Netherlands Institute for Radio Astronomy

14 MPIFR - Max-Planck-Institut für Radioastronomie

15 OSO - Onsala Space Observatory

16 University of Southampton

17 CfA - Harvard-Smithsonian Center for Astrophysics

18 University of Edinburgh

19 Leiden Observatory [Leiden]

20 Jacobs University [Bremen]

21 AIP - Leibniz-Institut für Astrophysik Potsdam

22 Max Planck Institute for Astrophysics

23 TLS - Thüringer Landessternwarte Tautenburg

24 Radboud university [Nijmegen]

25 LAGRANGE - Joseph Louis LAGRANGE

26 Hamburger Sternwarte/Hamburg Observatory

27 Medstar Research Institute

28 Kapteyn Astronomical Institute [Groningen]

29 Center for Information Technology CIT

30 CRAL - Centre de Recherche Astrophysique de Lyon

31 NRAO - National Radio Astronomy Observatory [Charlottesville]

32 Oxford Astrophysics

33 School of Physics and Astronomy [Southampton]

34 SKA South Africa

35 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique

36 IMAPP - Institute for Mathematics, Astrophysics and Particle Physics

37 AlfA - Argelander-Institut für Astronomie

Abstract : Pulsars emit low-frequency radio waves through to high-energy gamma-rays that are generated anywhere from the surface out to the edges of the magnetosphere. Detecting correlated mode changes in the multi-wavelength emission is therefore key to understanding the physical relationship between these emission sites. Through simultaneous observations, we have detected synchronous switching in the radio and X-ray emission properties of PSR B0943+10. When the pulsar is in a sustained radio 'bright' mode, the X-rays show only an un-pulsed, non-thermal component. Conversely, when the pulsar is in a radio 'quiet' mode, the X-ray luminosity more than doubles and a 100%-pulsed thermal component is observed along with the non-thermal component. This indicates rapid, global changes to the conditions in the magnetosphere, which challenge all proposed pulsar emission theories.

Document type :

Journal articles

Domain :

Sciences of the Universe [physics]

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