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 T. E. Hassall 5 A. Karastergiou 10 E. Keane 11 V. I. Kondratiev 12 M. Kramer 13 M. Kuniyoshi 13 A. Noutsos 13 M Serylak 9, 14 M Pilia 12 C. Sobey 13 P. Weltevrede 5 K. Zagkouris 10 A. Asgekar 12 I. M. Avruch 1 F. Batejat 15 M.E. Bell 16 M.R. Bell 13 M. J. Bentum 12 G. Bernardi 17 P. Best 18 L. Birzan 19 A. Bonafede 20 F. Breitling 21 J. Broderick 16 M. Bruggen 20 H. R. Butcher 12 B. Ciardi 22 S. Duscha 12 J. Eisloffel 23 H. Falcke 12, 13, 24 R. Fender 16 C. Ferrari 25 W. Frieswijk 12 M.A. Garrett 12, 19 F. de Gasperin 26 E. de Geus 27 A. W. Gunst 12 G. Heald 12 M. Hoeft 23 A. Horneffer 22 M. Iacobelli 19 G. Kupper 12 P. Maat 12 G. Macario 25 S. Markoff 8 J. P. Mckean 12 M. Mevius 12 J. Miller-Jones 8 R. Morganti 28, 29 H Munk 30 E. Orrù 12 H. Paas 31 M Pandey-Pommier 32 V. N. Pandey 33 R. Pizzo 12 A. G. Polatidis 12 S. Rawlings 34 W. Reich 13 H. Rottgering 19 A. M. M. Scaife 35 A. Schoenmakers 12 A. Shulevski 29 J. Sluman 12 M. Steinmetz 36 Michel Tagger 9 Y. Tang 12 C. Tasse 37, 38 S. ter Veen 39 R. Vermeulen 12 R.H. van de Brink 12 R.J. van Weeren 12 R. A. M. J. Wijers 8 M. W. Wise 8, 12 O. Wucknitz 40 S. Yatawatta 29 P. Zarka 41
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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