PHYSICAL CONDITIONS IN A CORONAL MASS EJECTION FROM HINODE, STEREO, AND SOHO OBSERVATIONS

Journal Article · Mon Mar 01 00:00:00 EST 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/711/1/75· OSTI ID:21394394

Landi, E ^[1]; Raymond, J C; Miralles, M P ^[2]; Hara, H ^[3]

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1. Naval Research Laboratory, Washington, DC 20375 (United States)
2. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)
3. National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588 (Japan)

In the present work, we analyze multiwavelength observations from Hinode, Solar and Heliospheric Observatory (SOHO), and STEREO of the early phases of a coronal mass ejection (CME). We use Hinode/EIS and SOHO/UVCS high-resolution spectra to measure the physical properties of the CME ejecta as a function of time at 1.1 and 1.9 solar radii. Hinode/XRT images are used in combination with EIS spectra to constrain the high temperature plasma properties of the ejecta. SECCHI/EUVI, SECCHI/COR 1, SOHO/EIT, and SOHO/LASCO images are used to measure the CME trajectory, velocity, and acceleration. The combination of measurements of plane of the sky velocities from two different directions allows us to determine the total velocity of the CME plasma up to 5 solar radii. Plasma properties, dynamical status, thermal structure, and brightness distributions are used to constrain the energy content of the CME plasma and to determine the heating rate. We find that the heating is larger than the kinetic energy, and compare it to theoretical predictions from models of CME plasma heating and acceleration.

• OSTI ID: 21394394
• Journal Information: Astrophysical Journal, Vol. 711, Issue 1; Other Information: DOI: 10.1088/0004-637X/711/1/75; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCELERATION
BRIGHTNESS
HEATING RATE
HOT PLASMA
KINETIC ENERGY
MASS
PLASMA HEATING
SOLAR ACTIVITY
SOLAR CORONA
SPECTRA
SUN
TIME DEPENDENCE
ULTRAVIOLET RADIATION
ATMOSPHERES
ELECTROMAGNETIC RADIATION
ENERGY
HEATING
MAIN SEQUENCE STARS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLASMA
RADIATIONS
SOLAR ATMOSPHERE
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR CORONAE