decompress .tar.Z file

zcat filename.Z | tar -xvf -

swift data analysis.

http://www.hp.phys.titech.ac.jp/ymori/xrt_analysis.html
http://www.swift.ac.uk/user_objects/

new stellar mass black holes

http://arxiv.org/pdf/1011.1459v2
http://www.eso.org/public/archives/releases/sciencepapers/eso1004/eso1004.pdf
http://arxiv.org/pdf/0802.2716v2