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Frazin, R.A.; Vásquez, A.M.; Thompson, W.T.; Hewett, R.J.; Lamy, P.; Llebaria, A.; Vourlidas, A.; Burkepile, J. "Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs" (2012) Solar Physics. 280(1):273-293
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Abstract:

In order to assess the reliability and consistency of white-light coronagraph measurements, we report on quantitative comparisons between polarized brightness [pB] and total brightness [B] images taken by the following white-light coronagraphs: LASCO-C2 on SOHO, SECCHI-COR1 and -COR2 on STEREO, and the ground-based MLSO-Mk4. The data for this comparison were taken on 16 April 2007, when both STEREO spacecraft were within 3. 1 {ring operator} of Earth's heliographic longitude, affording essentially the same view of the Sun for all of the instruments. Due to the difficulties of estimating stray-light backgrounds in COR1 and COR2, only Mk4 and C2 produce reliable coronal-hole values (but not at overlapping heights), and these cannot be validated without rocket flights or ground-based eclipse measurements. Generally, the agreement between all of the instruments' pB values is within the uncertainties in bright streamer structures, implying that measurements of bright CMEs also should be trustworthy. Dominant sources of uncertainty and stray light are discussed, as is the design of future coronagraphs from the perspective of the experiences with these instruments. © 2012 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs
Autor:Frazin, R.A.; Vásquez, A.M.; Thompson, W.T.; Hewett, R.J.; Lamy, P.; Llebaria, A.; Vourlidas, A.; Burkepile, J.
Filiación:Dept. of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI 48109, United States
Instituto de Astronomía y Física del Espacio, ONICET-UBA and FCEN (UBA), CC 67 - Suc 28, Ciudad de Buenos Aires, Argentina
Adnet Systems, Inc., NASA Goddard Space Flight Center, Code 671, Greenbelt, MD 20771, United States
Dept. of Computer Science, University of Illinois, Urbana, IL 61801, United States
Laboratoire d'Astrophysique de Marseille, UMR6110, CNRS/Université de Provence, 38 rue Frédéric Joliot-Curie, 13388 Marseille Cedex 13, France
Naval Research Laboratory, Code 7663, Washington, DC 20375, United States
High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307, United States
Dept. of Mathematics, Massachusetts Institute of Technology, Cambridge, MA, 02139, United States
Palabras clave:Coronagraph; Electron density; Solar corona
Año:2012
Volumen:280
Número:1
Página de inicio:273
Página de fin:293
DOI: http://dx.doi.org/10.1007/s11207-012-0028-3
Título revista:Solar Physics
Título revista abreviado:Sol. Phys.
ISSN:00380938
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00380938_v280_n1_p273_Frazin

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Citas:

---------- APA ----------
Frazin, R.A., Vásquez, A.M., Thompson, W.T., Hewett, R.J., Lamy, P., Llebaria, A., Vourlidas, A.,..., Burkepile, J. (2012) . Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs. Solar Physics, 280(1), 273-293.
http://dx.doi.org/10.1007/s11207-012-0028-3
---------- CHICAGO ----------
Frazin, R.A., Vásquez, A.M., Thompson, W.T., Hewett, R.J., Lamy, P., Llebaria, A., et al. "Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs" . Solar Physics 280, no. 1 (2012) : 273-293.
http://dx.doi.org/10.1007/s11207-012-0028-3
---------- MLA ----------
Frazin, R.A., Vásquez, A.M., Thompson, W.T., Hewett, R.J., Lamy, P., Llebaria, A., et al. "Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs" . Solar Physics, vol. 280, no. 1, 2012, pp. 273-293.
http://dx.doi.org/10.1007/s11207-012-0028-3
---------- VANCOUVER ----------
Frazin, R.A., Vásquez, A.M., Thompson, W.T., Hewett, R.J., Lamy, P., Llebaria, A., et al. Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs. Sol. Phys. 2012;280(1):273-293.
http://dx.doi.org/10.1007/s11207-012-0028-3