Periodic Acceleration of Electrons in the 1998 November 10 Solar Flare

• DOI: 10.1086/338052
• Publication Date: 2002-07-26T17:29:04Z
• Authors: A. Asai; M. Shimojo; H. Isobe; T. Morimoto; T. Yokoyama; K. Shibasaki; H. Nakajima
• Keywords: Flare; Solar flare; Coronal loop; Transit time

We present an examination of the multiwavelength observation a C7.9 flare that occurred on 1998 November 10. This is first imaging quasi-periodic pulsations (QPPs). Four bursts were observed with hard X-ray telescope aboard Yohkoh and Nobeyama Radioheliograph during impulsive phase flare. In second burst, microwave time profiles clearly showed QPP. estimated Alfvén transit along loop using images soft photospheric magnetograms found was almost equal to period therefore suggest, based shock acceleration model, variations macroscopic magnetic structures, such as oscillations coronal loops, affect efficiency particle injection/acceleration.