Brightest Explosion Ever Observed Overwhelms Telescopes

[Orstio]

http://www.everything-science.com/index.php?option=com_content&task=view&id=111&Itemid=2

Scientists have detected a flash of light from across the Galaxy so powerful that it bounced off the Moon and lit up the Earth's upper atmosphere. This giant flare was the brightest explosion ever detected from beyond the Solar System. For over a tenth of a second the remarkable . . .

[sethur]

Is it possible that this event was preceded by some sort of gravity wave, and if so, could this have triggered the earthquake that led to the tsunami just a few hours earlier?

Steve W

[Dingo1]

No, what triggered the earthquake was a fault slippage, a common occurance along fault-lines

[Qazaq2003]

Dingo,
 The fault line where the earthquake that triggered the tsunami in the eastern Indian Ocean is a subduction fault, where one plate slides under another, and is marked by a trench.  Q