Indian Journal of Physics

, Volume 84, Issue 11, pp 1461–1466 | Cite as

First VLF detections of ionospheric disturbances due to Soft Gamma Ray Repeater SGR J1550-5418 and Gamma Ray Burst GRB 090424

  • Sandip K. Chakrabarti
  • Sushanta K. Mandal
  • Sudipta Sasmal
  • Debashis Bhowmick
  • Asit K. Choudhury
  • Narendra N. Patra
Article

Abstract

We present the first report of the detection of sudden ionospheric disturbances (SIDs) due to a Soft Gamma Ray Repeater (SGR) SGR J1550-5418 and a Gamma Ray Burst (GRB) GRB 090424. These detections were made with receiving stations of Indian Centre for Space Physics which were monitoring Very Low Frequency signals (VLFs) from the VTX transmitter located at the southern tip of Indian sub-continent. These positive detections add to the list of a handful of similar detections of other GRBs and SGRs throughout the world.

Keywords

Sudden Ionospheric Disturbances Gamma Ray Bursts Soft Gamma Ray repeaters-Xrays and Gamma Ray Astronomy 

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Copyright information

© Indian Association for the Cultivation of Science 2010

Authors and Affiliations

  • Sandip K. Chakrabarti
    • 1
    • 2
  • Sushanta K. Mandal
    • 2
  • Sudipta Sasmal
    • 2
  • Debashis Bhowmick
    • 2
  • Asit K. Choudhury
    • 3
  • Narendra N. Patra
    • 4
  1. 1.S N Bose National Centre for Basic Sciences, JD-Block, Sector-IIISalt Lake, KolkataIndia
  2. 2.Indian Centre for Space PhysicsKolkataIndia
  3. 3.Indian Centre for Space Physics, Malda Branch, Atul MarketMaldaIndia
  4. 4.NCRA/TIFRGaneshkhind, PuneIndia

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