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

Mahrous, Ayman

doi:10.5194/angeo-35-345-2017

Articles | Volume 35, issue 3

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

https://doi.org/10.5194/angeo-35-345-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 35, issue 3

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

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Latest update: 13 Mar 2026

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.