Ultraluminous X-ray Source in starbuUltraluminous X-ray Source in starburst galaxy M82rst galaxy M82

X-Ray Data Analysis Workshop PresentationFeb. 7, 2007

謝佩穎 林凱楊 呂雅瀾 吳秉勳 楊怡蓉

Data analysisData analysis Data lists Data lists

Time ID Exposure Time ID Exposure timetime

1999/09 361 33.68ks1999/09 361 33.68ks

2002/06 2933 18.25ks2002/06 2933 18.25ks

2005/05 6097 58.19ks2005/05 6097 58.19ks

2005/08 5644 75.13ks2005/08 5644 75.13ks

ProceduresProcedures

Retrieve dataRetrieve data

Extract Light curveExtract Light curve

Construct Energy Construct Energy

spectrumspectrum

Fit spectrum with Fit spectrum with

absorbed power law & absorbed power law &

calculate fluxcalculate flux

Our PI : Tod Strohmayer Our PI : Tod Strohmayer

Data analysisData analysisM82 X-1 2005/08M82 X-1 2005/08

Light curves Light curves

1999 2002

Light CurvesLight Curves

2005/05 2005/08

Different backgroundDifferent background

spectrumspectrum

BONUS!!BONUS!!

1999 33.68ks 2000 9.05ks

New source Light curveNew source Light curve

Background including diffused emission Background excluding diffused emission

Energy Spectrum of New SourceEnergy Spectrum of New SourceWith less diffused emission background source

Energy spectrum of new Energy spectrum of new sourcesource

With diffused emission background source