2008A&A...489..837C


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.14CET08:45:36

2008A&A...489..837C - Astronomy and Astrophysics, volume 489, 837-848 (2008/10-2)

Identifying XMM-Newton observations affected by solar wind charge exchange. Part I.

CARTER J.A. and SEMBAY S.

Abstract (from CDS):

We describe a method for identifying XMM-Newton observations that have been affected by solar wind charge exchange (SWCX) emission and present preliminary results of previously unidentified cases of such emission within the XMM-Newton Science Archive. The method is based on detecting temporal variability in the diffuse X-ray background. We judge the variability of a low energy band, taken to represent the key indicators of charge exchange emission. We compare this to the variability of a continuum band, which is expected to be non-varying, even in the case when SWCX enhancement has occurred. We discuss previously published results with SWCX contamination that have been tested with the above method. We present a selection of observations that we consider to show previously unpublished SWCX enhancements, and further investigate these observations for correlation with data from the solar wind observatory, ACE. We also consider the geometry and viewing angle of XMM-Newton at the time of the observation to examine the origin of the charge exchange emission, whether it be from interactions with geocoronal neutrals in Earth's magnetosheath or from the heliosphere and heliopause.

Abstract Copyright:

Journal keyword(s): X-rays: diffuse background - methods: data analysis - Sun: solar-terrestrial relations

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14344 1
2 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1808 1

    Equat.    Gal    SGal    Ecl

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2019.11.14-08:45:36

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