XMM-NEWTON OBSERVATIONS OF MBM 12: MORE CONSTRAINTS ON THE SOLAR WIND CHARGE EXCHANGE AND LOCAL BUBBLE EMISSIONS

Journal Article · Mon Jan 10 00:00:00 EST 2011 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/726/2/91· OSTI ID:21567669

Koutroumpa, Dimitra; Snowden, Steven L ^[1]; Smith, Randall K; Edgar, Richard J; Plucinsky, Paul P ^[2]; Kuntz, Kip D ^[3]

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1. NASA/Goddard Space Flight Center, Code 662, Greenbelt, MD 20771 (United States)
2. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138 (United States)
3. Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States)

We present the first analysis of an XMM-Newton observation of the nearby molecular cloud MBM 12. We find that in the direction of MBM 12 the total O VII (0.57 keV) triplet emission is 1.8{sup +0.5}{sub -0.6} photons cm{sup -2} s{sup -1} sr{sup -1} (or line units, LU) while for the O VIII (0.65 keV) line emission we find a 3{sigma} upper limit of <1 LU. We use a heliospheric model to calculate the O VII and O VIII emission generated by Solar Wind Charge-eXchange (SWCX) which we compare to the XMM-Newton observations. This comparison provides new constraints on the relative heliospheric and Local Bubble contributions to the local diffuse X-ray background. The heliospheric SWCX model predicts 0.82 LU for O VII, which accounts for {approx}46% {+-} 15% of the observed value, and 0.33 LU for the O VIII line emission consistent with the XMM-Newton observed value. We discuss our results in combination with previous observations of MBM 12 with Chandra and Suzaku.

• OSTI ID: 21567669
• Journal Information: Astrophysical Journal, Vol. 726, Issue 2; Other Information: DOI: 10.1088/0004-637X/726/2/91; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BUBBLES
CHARGE EXCHANGE
CLOUDS
EMISSION
HELIOSPHERE
SOLAR WIND
SUPERNOVA REMNANTS
X RADIATION
ATMOSPHERES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
RADIATIONS
SOLAR ACTIVITY
SOLAR ATMOSPHERE
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR WINDS