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

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          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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          Most cited references28

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          Pair formation above pulsar polar caps - Structure of the low altitude acceleration zone

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            THE FIRSTFERMILARGE AREA TELESCOPE CATALOG OF GAMMA-RAY PULSARS

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              Long-term timing observations of 374 pulsars

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                Author and article information

                Journal
                01 February 2013
                Article
                10.1126/science.1230960
                1302.0203
                c4f317d8-65dc-4bbe-9a0b-6d4183eaef29

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

                History
                Custom metadata
                Science 339, 436-439, Jan. 25, 2013
                Paper published in Science including supplementary material
                astro-ph.HE

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