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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 34 Michel Tagger 9 Y. Tang 13 C. Tasse 35, 36 S. ter Veen 37 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 38 S. Yatawatta 28 P. Zarka 36
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.
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W. Hermsen, J. W. T. Hessels, L. Kuiper, J. van Leeuwen, D. Mitra, et al.. Synchronous X-ray and Radio Mode Switches: a Rapid Global Transformation of the Pulsar Magnetosphere. Science, American Association for the Advancement of Science, 2013, 339 (6118), pp.436-439. ⟨10.1126/science.1230960⟩. ⟨insu-01288734⟩

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