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MOS 3x3 mode MOS 3x3 mode
slow slew surveyslow slew surveyRichard SaxtonRichard Saxton
October 2006October 2006
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 22
MOS 3x3 modeMOS 3x3 mode
SAS for simplicity remaps raw pixels from the 203x201back onto the original 610 x 602 grid randomising to avoid gaps.
emchain emenergy:rejectbade3e4=NO emenergy:detectbadoffset=NO
Use events with #XMMEA_EM && PATTERN==0
203
201
New SAS mode
PRIMEFULLWIN3X3
0.4 s
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 33
MOS-2 full slew, first leg (242/3),30 degrees/hour
MOS-2 PN
Slow survey mode
1E 1746.7-3224 – MOS position 10’ off
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 44
Energy scaleEnergy scale
Spectrum of all pattern 0 events Al = 1492 +/- 7 eV
Looks good
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 55
Light curve Light curve
IGR J17497-2821
Full band background = 3c/s (per ¼ sq deg)
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 66
PSFPSF
Extension=12” in slew
direction due to frame
time of 400 ms
• PSF needs to be modeled fully for correct ARF
• Experience with PN eFF mode (18” extension)
shows that sources aren’t missed but are falsely
flagged as extended
1E 1746.7-3224
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 77
PSF comparison for IGR J17497PSF comparison for IGR J17497--28212821
PN
Mos-1
MOS-2
Quite off-axis, PSF broader
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 88
Exposure mapExposure map
MOS-2 mean on-axis exposure time = 21.5sMOS-1 mean exposure time = 17.3s
MOS-2 exp map MOS-2 exposure histogramMOS-1 exposure histogram
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 99
Light curveLight curve
Shows vignetting effect of movement through detector
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1010
SpectraSpectra
1E 1746.7-3224 – LMXB, NH=6E21
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1111
Current problemsCurrent problems
� FLAGs – currently all events marked bad� All frames are marked as ‘extended’ because not enough time to read a frame while next one is looking at the sky (need 500ms?)� E3/E4 background determination problematic� Bad pixels need remapping onto 203x201 grid ?� Pattern 0 only - but need to calculate pattern fractions� Position errors of a few arc minutes
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1212
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1313
Hardness ratiosHardness ratios
The bulk spectral properties
of the EPIC_pn catalogue
detections.
HR1 = (F2 - F1) / (F2 + F1)
HR2 = (F3 - F2) / (F3 + F2)
HR3 = (F4 - F3) / (F4 + F3)
Left panels are for high
galactic latitude, right
panels are for low galactic
latitude.
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1414
How to access the catalogueHow to access the catalogueo Fits file from http://xmmssc-www.star.le.ac.uk/
o The XSA http://xmm.vilspa.esa.es/xsa/
o SCI-DB http://xcatdb.u-strasbg.fr/xcat-db/
o User documentation: http://xmmssc-
www.star.le.ac.uk/newpages/UserGuide_1xmm.html
o LEDAS http://ledas-www.star.le.ac.uk
Current ref: Watson et al. 2003, Astron. Nachr., 324, 89
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1515
2XMM 2XMM –– coming sooncoming soon
��~3000 observations~3000 observations
��~150,000 sources ~150,000 sources –– largest Xlargest X--ray ray
catalogue evercatalogue ever
�� Similar flux limits to 1XMMSimilar flux limits to 1XMM
�� Finds extended sourcesFinds extended sources
��Release planned for 2006 Release planned for 2006 –– possible possible
prepre--release in Sept.release in Sept.
�� Bright sources (>500 counts) will Bright sources (>500 counts) will
have associated spectra and time have associated spectra and time
series.series.
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1616
XMM slew survey: XMMSL1XMM slew survey: XMMSL1
��Released May 2006Released May 2006
�� Shallow survey of wide part of sky Shallow survey of wide part of sky
(6000 deg^2)(6000 deg^2)
�� Flux limits, Flux limits, FF0.20.2--1212=1x10=1x10--1212 ergs sergs s--1 1
cmcm--22
��~4000 sources, of which 40% are ~4000 sources, of which 40% are
unidentifiedunidentified
��Good for large extended sources, Good for large extended sources,
hard band survey, variability studies.hard band survey, variability studies.
�� Available from XSA, Available from XSA,
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1717
Correlations with ROSAT
- 55% of sources correlate with ROSAT (non-extended, DET_ML>10)- 1% show variability by > factor of ten
Mean rate : XMM-slew/ROSAT~10
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1818
Vela Supernova Remnant
~½ hour observing time !XMM-Newton SlewROSAT
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 1919
Oct 25Oct 25--27 200627 2006EPIC cal, EPIC cal, MallorcaMallorca
MOS 3x3 slew surveyMOS 3x3 slew survey 2020
SummarySummary
�� 1XMM, XMMSL1 relatively unexplored 1XMM, XMMSL1 relatively unexplored
at present.at present.
��Data is publicData is public
�� 2XMM available within months and 2XMM available within months and
containing samples at medium flux containing samples at medium flux
for most source types.for most source types.
