soft gamma repeater (SGR) bâzgaršgar-e gâmmâ-ye narm Fr.: répéteur gamma mou A member of a small class of objects which emit intense bursts of → gamma rays and → X-rays (> 100 keV) at irregular intervals. The bursts last for some 100 milli-seconds. It is conjectured that they are → magnetars. See also → starquake. → soft; → gamma rays; → repeater. |