XMMNewton Studies of the Galactic Centre Region

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XMM-Newton Studies of the Galactic Centre Region
Bob Warwick University of Leicester, UK
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Main Collaborators
Anne Decourchelle CEA Saclay, France Masaaki
Sakano University of Leicester, UK Peter Predehl
MPE, Germany Andrea Goldwurm CEA Saclay, France
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XMM-Newton EPIC Instrument Large Effective
Area 2000 cm2 _at_ 1 keV Good Imaging
Capability PSF(FWHM) 6 arcsec Wide Field of
View 30 arcmin diameter Broad
Bandpass 0.3-12 keV Good Spectral
Resolution 120 eV _at_ 6 keV
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XMM-Newton Galactic Centre Survey MOS Exposure Map
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PN Combined MOS
GC6 Field
GC5 Field
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XMM-Newton Galactic Centre Survey Uncorrected
Counts (MOS only)
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XMM-Newton Galactic Centre Survey 0.4 - 9 keV MOS
Image
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XMM-Newton Galactic Centre Survey
Chandra Galactic Centre Survey
Wang, Gotthelf Lang (2002)
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Sgr A - Radio Arc Region
0.5-1.4 keV X-ray
Sgr A
1E 1743.1-2843
Galactic Latitude
-0.2o
Galactic Longitude
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Sgr A - Radio Arc Region
2-4.5 keV X-ray
Arches Cluster
Sgr A
1E 1743.1-2843
Galactic Latitude
Sgr A East SNR
-0.2o
Galactic Longitude
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Sgr A - Radio Arc Region
4.5-6 keV X-ray
Arches Cluster
Sgr A East SNR
Sgr A
1E 1743.1-2843
Galactic Latitude
NT X-ray Threads
-0.2o
Galactic Longitude
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Sgr A - Radio Arc Region
6-9 keV X-ray
Sgr A
Transient
Transient
Galactic Latitude
NT X-ray Threads
G0.13-0.13
Transient
-0.2o
Galactic Longitude
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Spectral Extraction Region
Galactic Longitude
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X-ray Spectrum from the Annular Region around Sgr
A
Si XIII
S XV
7-10 keV Thermal and/or
Non-Thermal
Ar XVII
Ca XIX
Fe
1-3 keV Thermal
Al Si Fluorescence Lines
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Fe-line Spectrum from the Annular Region around
Sgr A
6.4 keV 6.70 keV 6.96 keV
Fe XXV
Fe Neutral
Fe XXVI
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X-ray Spectra at positions along the Galactic
Plane
0o Longitude
1o Longitude
20o Longitude
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2-6 keV band
2.4 keV S line
6.4 keV Fe line
6.7 keV Fe line
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Sgr A - Radio Arc Region
Radio 20 90 cm
90 cm
Galactic Latitude
6.4 keV Fe fluorescence line
-0.2o
Galactic Longitude
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Sgr A - Radio Arc Region
CS (J1-0) 10-40 km/s
6.4 keV Fe line
Galactic Latitude
6.4 keV Fe fluorescence line
-0.2o
Galactic Longitude
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Sgr A - Radio Arc Region
X-ray Spectral Hardness
2-4.5 keV 4.5-6 keV
Galactic Latitude
6.4 keV Fe fluorescence line
-0.2o
Galactic Longitude
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X-ray Spectra of G0.13-0.13 Region extracted on
the basis of the X-ray spectral hardness
0.2o
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X-ray Spectra of G0.13-0.13 Region extracted on
the basis of the X-ray spectral hardness
Continuum x2.2 6.4 keV line flux
x2.4 6.7 keV line flux x1.1
Enhanced LECRe Interactions on Dense Molecular
Clouds (eg Valinia et al 2000Yusef-Zadeh et al
2002)
0.2o
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4.5-6 keV Continuum
Correlation of the 4.5-6 keV X-ray continuum and
the 6.4 keV line flux
6.4 keV Fe Line
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XX-ray Reflection Nebulosity in Sgr C Region
0.0o
Chandra 1-8 keV (b-w image) XMM-Newton
2-9 keV (contours)
-0.1o
-0.2o
-0.6o
-0.5o
Galactic Longitude
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XX-ray Reflection Nebulosity in Sgr C Region
CS (J1-0) -70 to 60 km/s
90 cm Radio Continuum
6.4 keV Fe line
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Arches Cluster
2-6 keV
0.0o
0.1o
Iron 6.7 keV line (black) Iron 6.4 keV line
(blue)
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XMM-Newton 2-9 keV
Chandra 1-8 keV
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XMM-Newton 2-6 keV February 2002
XMM-Newton 2-6 keV September 2001
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XMM-Newton Observations of X-ray flares from Sgr
A
September 2001
October 2002
Current Campaign March 2004 (276 ks) Sept.
2004 (276 ks)
Porquet et al. (2003)
Goldwurm et al. (2003)
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Conclusions

• The XMM-Newton Galactic Centre X-ray Survey is
  providing a wealth of new spectral, spatial and
  temporal information on
• The extensive hard emission in the GCR which
  arises from a complex web of diffuse thermal and
  non-thermal processes discrete sources
• The X-ray bright molecular cloud complexes in
  Sagittarius A, B2 C and the G0.013-0.13
  region
• An emergent population of intermediate
  luminosity transient X-ray sources
• X-ray flaring activity in Sgr A
• The XMM-Newton and Chandra data are highly
  complementary and the growing database provides
  a tremendous resource for Galactic Centre
  studies.