「児童館における子どもの未来応援事業」への協力についての報告 : 学校教育学科SAT の活動報告

教育人間科学部学校教育学科公認サークルSAT（Student Assistant Teacher）では，地域貢献活動を通して，教員に求められる「社会性・コミュニケーション能力・企画調整力」を高めるとともに教員になる意欲向上につなげることをねらいとして活動に取り組んでいる．足立区が取り組む「未来へつなぐあだちプロジェクト」の一事業である「児童館における子どもの未来応援事業」の協力依頼を受け，SATとして協力させていただいた．参加した学生にとって，打合せや事前準備等を通し，その重要性を感じたり，子どもたちとのふれあいを通して教員になる意欲向上につながったりと有意義な活動となった．学生から出された課題を今後に生かし，活動をさらに拡充させていきたい

Observation results by the TAMA300 detector on gravitational wave bursts from stellar-core collapses

We present data-analysis schemes and results of observations with the TAMA300 gravitational-wave detector, targeting burst signals from stellar-core collapse events. In analyses for burst gravitational waves, the detection and fake-reduction schemes are different from well-investigated ones for a chirp-wave analysis, because precise waveform templates are not available. We used an excess-power filter for the extraction of gravitational-wave candidates, and developed two methods for the reduction of fake events caused by non-stationary noises of the detector. These analysis schemes were applied to real data from the TAMA300 interferometric gravitational wave detector. As a result, fake events were reduced by a factor of about 1000 in the best cases. The resultant event candidates were interpreted from an astronomical viewpoint. We set an upper limit of 2.2x10^3 events/sec on the burst gravitational-wave event rate in our Galaxy with a confidence level of 90%. This work sets a milestone and prospects on the search for burst gravitational waves, by establishing an analysis scheme for the observation data from an interferometric gravitational wave detector