Searching for Large-scale flows around Active Regions with Hinode

Details Searching for Large-scale flows around Active Regions with Hinode Searching for Large-scale flows around Active Regions with Hinode

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsp43c..08h&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SP43C-08

Physics

7522 Helioseismology, 7524 Magnetic Fields, 7529 Photosphere

Scientific paper

Heliosiemic studies have suggested that active regions are surrounded by large-scale inflows (Haber et al. 2004), and it has recently been hypothesized by Hurlburt and DeRosa (2008,HD) that these are due to the enhanced surface cooling resulting from plage and faculae. We seek confirmation of these results using Hinode observations of Active Regions using a variety of methods to infer inflow velocities from of continuum images and Dopplergrams. These flow patterns are then compared to the HD hypothesis. This work has been supported by NASA through contracts NNM07AA01C and NNG06GD45G. References: Haber, D., Hindman, B., Toomre, J. and Thompson, M. 2004, ÐOrganized Subsurface Flows near Active Regions,î Sol. Phys. 220,371. Hurlburt & DeRosa, 2008 ÐOn the longevity of Active Regions,î Ap.J. Lett., submitted

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