Charge-Transfer induced EUV and Soft X-ray emissions in the Heliosphere

Abstract

We study the EUV/soft X-ray emission generated by charge transfer between solar wind heavy ions and interstellar H and He neutral atoms in the inner Heliosphere. We present heliospheric maps and spectra for stationary solar wind, depending on solar cycle phase, solar wind anisotropies and composition, line of sight direction and observer position. A time-dependant simulation of the X-ray intensity variations due to temporary solar wind enhancement is compared to XMM Newton recorded data of the Hubble Deep Field North observation (Snowden et al. 2004). Results show that the heliospheric component can explain a large fraction of the line intensity below 1.3 keV, strongly attenuating the need for soft X-ray emission from the Local Interstellar Bubble.

18 pages, 13 figures (5 in online material,for colour figures contact the authors), 3 tables, accepted in A&A

Cited by in corpus (22)

• Constraining the Milky Way's Hot Gas Halo with OVII and OVII Emission Lines
• The Boundary Conditions of the Heliosphere: Photoionization Models Constrained by Interstellar and In Situ Data
• OVII and OVIII line emission in the diffuse soft X-ray background: heliospheric and galactic contributions
• The origin of the 'local' 1/4 keV X-ray flux in both charge exchange and a hot bubble
• The Structure of the Local Hot Bubble
• The Trouble with the Local Bubble
• The Interaction of the Fermi Bubbles with the Milky Way's Hot Gas Halo
• A disk-dominated and clumpy circumgalactic medium of the Milky Way seen in X-ray emission
• EBIT Charge-Exchange Measurements and Astrophysical Applications
• The Fractional Ionization of the Warm Neutral Interstellar Medium
• The Solar Wind Charge-eXchange contribution to the Local Soft X-ray Background. Model to data comparison in the 0.1-1.0 keV band
• Structual Study of Galactic Hot Gas toward Markarian 421 from X-Ray Absorption and Emission Lines
• Scientific Objectives of the Hot Universe Baryon Surveyor (HUBS) Mission
• Observed Limits on Charge Exchange Contributions to the Diffuse X-ray Background
• Rebirth of X-ray Emission from the Born-Again Planetary Nebula A 30
• The Solar-Cycle Temporal Variation of the Solar Wind Charge Exchange X-ray Lines
• The soft X-ray background with Suzaku: I. Milky Way halo
• Revising the Local Bubble Model due to Solar Wind Charge Exchange X-ray Emission
• X-ray morphology due to charge-exchange emissions used to study the global structure around Mars
• XMM-Newton Measurement of the Galactic Halo X-ray Emission using a Compact Shadowing Cloud
• The Origin of the X-ray Emission from the High-velocity Cloud MS30.7-81.4-118
• Modeling of geocoronal solar wind charge exchange events detected with Suzaku