Wavelet analysis of 'double quasar' flux data

Details Wavelet analysis of 'double quasar' flux data Wavelet analysis of 'double quasar' flux data

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...255l..20h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 255, no. 1-2, p. L20-L23.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Photometry, Gravitational Lenses, Quasars, Correlation Coefficients, Data Processing, Signal Analysis

Scientific paper

We have used a wavelet transform method to extract time delay information from the light curves of the gravitationally lensed quasar 0957+561 A,B. The time-frequency performance of wavelet transforms is different from that of, e.g., windowed Fourier transforms in allowing a better temporal resolution and localization of the multiple scales of the signal. It is shown that the discrepancies between the time delays derived by different authors may in part be ascribed to the choice of reduction method.

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