ATLAS: Turning Dopplergram images into frequency shift measurements

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Ada Coda
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ATLAS: Turning Dopplergram images into frequency shift measurements

Post by Ada Coda » Wed Dec 04, 2019 10:51 pm

ATLAS: Turning Dopplergram images into frequency shift measurements

Abstract: ATLAS performs the tracking, projecting, power-spectrum-making, and ring-fitting needed to turn a set of Dopplergram images into a set of frequency shift measurements. This code is essentially a combination of three codes, FRACK (FORTRAN Tracking), PSPEC (Power SPECtrum), and MRF (Multi-Ridge Fitting), included in the ATLAS package. ATLAS reads in a list of longitude/latitude coordinates corresponding to the desired tile centers and a set of full-disk Dopplergram images and outputs frequency shift measurements from each wave mode of each tile. The code relies on both distributed-memory (MPI) and shared-memory (OpenMP) parallelism to scale up to around 1000 processes. Due to the immense volume of data produced by the tracking and projecting steps, the intermediate data products (tiles, power spectra) are never written out.

Credit: Greer, Benjamin J.

Site: http://lcd-www.colorado.edu/bgreer/codes/ATLAS/
https://ui.adsabs.harvard.edu/abs/2019arXiv191107772N

Bibcode: 2019ascl.soft11013G

ID: ascl:1911.013

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