COMPARISON OF HINODE/XRT AND RHESSI DETECTION OF HOT PLASMA IN THE NON-FLARING SOLAR CORONA

Journal Article · Sat Oct 10 00:00:00 EDT 2009 · Astrophysical Journal (Online)

DOI:https://doi.org/10.1088/0004-637X/704/1/L58· OSTI ID:21367408

Reale, Fabio ^[1]; McTiernan, James M ^[2]; Testa, Paola ^[3]

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1. Dipartimento di Scienze Fisiche and Astronomiche, Universita di Palermo, Sezione di Astronomia, Piazza del Parlamento 1, 90134 Palermo (Italy)
2. Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States)
3. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)

We compare observations of the non-flaring solar corona made simultaneously with Hinode/XRT and RHESSI. The analyzed corona is dominated by a single active region on 2006 November 12. The comparison is made on emission measures. We derive emission measure distributions versus temperature of the entire active region from multifilter XRT data. We check the compatibility with the total emission measure values estimated from the flux measured with RHESSI if the emission comes from isothermal plasma. We find that RHESSI and XRT data analyses consistently point to the presence of a minor emission measure component peaking at log T approx 6.8-6.9. The discrepancy between XRT and RHESSI results is within a factor of a few and indicates an acceptable level of cross-consistency.

• OSTI ID: 21367408
• Journal Information: Astrophysical Journal (Online), Vol. 704, Issue 1; Other Information: DOI: 10.1088/0004-637X/704/1/L58; ISSN 1538-4357
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DATA ANALYSIS
EMISSION
FLARING
GAMMA RADIATION
HOT PLASMA
SOLAR CORONA
SUN
X RADIATION
ATMOSPHERES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
MAIN SEQUENCE STARS
PLASMA
RADIATIONS
SOLAR ATMOSPHERE
STARS
STELLAR ATMOSPHERES
STELLAR CORONAE