Letter | Published:

Geomagnetic effect associated with X-ray flare from Sco X-1

Nature volume 257, pages 3536 (04 September 1975) | Download Citation

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Abstract

THE effect on the night-time lower ionosphere of X radiation from celestial sources is a topic of some controversy1–4. An X-ray flare from Sco X-1 has been shown to have a daytime effect on the ionosphere5 and it has also been reported6 that celestial X-ray sources have a nocturnal effect on the lower ionosphere in certain conditions. Galactic X-ray ionisation has been shown7–9 to affect night-time geomagnetic field components.

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Author information

Affiliations

  1. Indian Institute of Astrophysics, Kodaikanal 624103, India

    • J. HANUMATH SASTRI
    •  & B. SURYANARAYANA MURTHY

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DOI

https://doi.org/10.1038/257035a0

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