Author/Authors :
K. Watanabe، نويسنده , , Y. Muraki، نويسنده , , Y. Matsubara، نويسنده , , K. Murakami، نويسنده , , T. Sako، نويسنده , , P. Miranda، نويسنده , , R. Ticona، نويسنده , , A. Velarde، نويسنده , , F. Kakimoto، نويسنده , , S. Ogio، نويسنده , , H. Tokuno، نويسنده , , H. Tsuchiya، نويسنده , , S. Shibata، نويسنده , , T. Sakai، نويسنده , , Carla Y. Mizumoto ، نويسنده , , R. Ogasawara، نويسنده , , M. Nakagiri، نويسنده , , A. Miyashita، نويسنده , , C. Lopate، نويسنده ,
Abstract :
The Sun was intensely active from late October to the beginning of November 2003. A series of 11 X class solar flares occurred in NOAA regions 484, 486 and 488. Unique among this series of flares were those occurring on November 2 and 4 in which solar neutrons were observed by the ground based neutron monitors located at Mt. Chacaltaya, Bolivia and Haleakala, Hawaii, respectively. In these flares, intense emission of hard X-rays and γ-rays have been observed by the satellites. It seems that production of solar neutrons coincided with the production of the hard electromagnetic radiations of these two flares.
