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 7 A. Alexov 8 T. Coenen 9 Jean-Mathias Grießmeier 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 10, 15 M Pilia 13 C. Sobey 14 P. Weltevrede 5 K. Zagkouris 11 A. Asgekar 13 I. M. Avruch 1 F. Batejat 16 M.E. Bell 17 M.R. Bell 14 M. J. Bentum 13 G. Bernardi 18 P. Best 19 L. Birzan 20 A. Bonafede 21 F. Breitling 22 J. Broderick 17 M. Bruggen 21 H. R. Butcher 13 B. Ciardi 23 S. Duscha 13 J. Eisloffel 24 H. Falcke 13, 14, 25 R. Fender 17 C. Ferrari 26 W. Frieswijk 13 M.A. Garrett 13, 20 F. de Gasperin 27 E. de Geus 28 A. W. Gunst 13 G. Heald 13 M. Hoeft 24 A. Horneffer 23 M. Iacobelli 20 G. Kupper 13 P. Maat 13 G. Macario 26 S. Markoff 9 J. P. Mckean 13 M. Mevius 13 J. Miller-Jones 9 R. Morganti 29, 30 H Munk 31 E. Orrù 13 H. Paas 32 M Pandey-Pommier 33 V. N. Pandey 34 R. Pizzo 13 A. G. Polatidis 13 S. Rawlings 35 W. Reich 14 H. Rottgering 20 A. M. M. Scaife 36 A. Schoenmakers 13 A. Shulevski 30 J. Sluman 13 M. Steinmetz 37 Michel Tagger 10 Y. Tang 13 C. Tasse 38, 39 S. Ter Veen 40 R. Vermeulen 13 R.H. Van de Brink 13 R.J. Van Weeren 13 R. A. M. J. Wijers 9 M. W. Wise 9, 13 O. Wucknitz 41 S. Yatawatta 30 P. Zarka 42
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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