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Volume 35, issue 3
Ann. Geophys., 35, 345–351, 2017
https://doi.org/10.5194/angeo-35-345-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: The 14th International Symposium on Equatorial Aeronomy

Ann. Geophys., 35, 345–351, 2017
https://doi.org/10.5194/angeo-35-345-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 07 Mar 2017

Regular paper | 07 Mar 2017

Ionospheric response to magnetar flare: signature of SGR J1550–5418 on coherent ionospheric Doppler radar

Ayman Mahrous
Cited articles  
Bellm, E., Smith, D. M., and Hurley, K.: AXP 1E 1547.0–5408: RHESSI observations up to 400 keV, GCN Circ., http://gcn.gsfc.nasa.gov/gcn/gcn3/8857.gcn3 (last access: March 2017), 2009.
Bracewell, R. N. and Straker, T. W.: The study of solar flares by means of very long radio waves, Mon. Not. R. Astron. Soc., 109, 28–45, 1949.
Camilo, F., Ransom, S. M., Halpern, J. P., and Reynolds, J.: 1E 1547.0–5408: A Radio-emitting Magnetar with a Rotation Period of 2 Seconds, Astrophys. J., 666, L93, https://doi.org/10.1086/521826, 2007.
Connaughton, V. and Briggs, M.: AXP 1E1547.0–5408: Fermi GBM observations, GRB Coordinates Network, http://gcn.gsfc.nasa.gov/other/A.gcn3 (last access: March 2017), 2009.
Dib, R., Kaspi, V. M., Scholz, P., and Gavriil, F. P.: RXTE Observation of Anomalous X-Ray Pulsar 1E 1547.0–5408 During and its 2008 and 2009 Outbursts, Astrophys. J., 748, 3, https://doi.org/10.1088/0004-637X/748/1/3, 2012.
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Short summary
This is the first time a traveling ionospheric disturbance caused by an extraterrestrial source like a magnetar has been detected. The source entered an active phase on 22 January 2009, during which a large number of bursts were observed by several satellites. We detected its ionospheric signature using the coherent ionospheric Doppler radar system. In general, the Earth's ionosphere is a gigantic detector that responds to the ionizing radiation emitted through high-energy astrophysical objects.
This is the first time a traveling ionospheric disturbance caused by an extraterrestrial source...
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