LAT Light Curve Analysis: Aperture Photometry and ... - Fermi - NASA

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R. Corbet Aperture Photometry The simplest form of photometry is aperture photometry. You just measure the flux collected inside a particular region of the sky. This is originally done with optical telescopes by using a physical aperture (e.g. a hole in a piece of metal). Now, with imaging instruments, it is possible to use a software defined aperture. COSPAR CBW 2010 4
R. Corbet LAT Photometry LAT light curves can be obtained in two basic ways: Likelihood analysis (B. Lott presentation) Aperture photometry Likelihood analysis has the potential for greater sensitivity and absolute flux measurements. Aperture photometry is easier, faster, and has the benefit of model independence. This presentation only deals with aperture photometry. COSPAR CBW 2010 5
Page 1 and 2: R. Corbet LAT Light Curve Analysis:
Page 3: R. Corbet What is Photometry? Phot
Page 7 and 8: LAT Aperture Optimization In optic
Page 9 and 10: Tools Used for Aperture Photometry
Page 11 and 12: Get Photon File Start/Stop Times $
Page 13 and 14: R. Corbet Calculate GTIs (Good Time
Page 15 and 16: Calculate Exposures of Time Bins $
Page 17 and 18: R. Corbet COSPAR CBW 2010 17
Page 19 and 20: R. Corbet barycentering barycenter
Page 21 and 22: R. Corbet Crude Approach to Low-Cou
Page 23 and 24: Looking for Binary Orbital Periods
Page 25: Power Spectrum of a Note Played R.
Page 28 and 29: R. Corbet Calculating Power Spectra
Page 30 and 31: • What should be done if data poi
Page 32 and 33: Weighting Can Reveal Orbital Period
Page 34 and 35: How should LAT data be weighted? W
Page 36 and 37: Exposure Weighted Rates vs. Unweigh
Page 38: Results of Looking for Binary Orbit

LAT Light Curve Analysis: Aperture Photometry and ... - Fermi - NASA

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