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Prospects for a Broad-Band Effective Area Standard Candle

Steve Sembay EPIC-MOS Calibration Manager

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Compact MS2137 Crab

Stable

Simple

BroadBand

G21.5

Vela PWNe
Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06

XMM EPIC MOS


Some Clusters Observed by Chandra

All Chandra Images/Movies courtesy of... http://chandra.harvard.edu/photo/index.html
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


XMM-EPIC observation of MS 2137

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


XMM Exposure: 24 ksec total 10 ksec after flare removal MEKAL kT~4.9 keV

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


"Legacy Observation": 100 ksec XMM observation

Band

Statistical Precision

0.2-0.5 keV 0.5-1.0 keV 1.0-4.0 keV 4.0-10.0 keV
XMM EPIC MOS

0.6% 0.4% 0.3% 0.9%

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


"Our Standard Candle" - The Crab

Chandra
XMM EPIC MOS

HST

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


EPIC-MOS2 Raw Image in Detector Coordinates
Special Imaging Mode with only 6% duty cycle

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Chandra

Vela PWNe

EPIC-MOS Deconvolved
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Only ~2 factor weaker than 3C 273 (both 40" extrac. radius)

Ave. PL, ~1.55, harder than 3C 273 (1.65-1.80) with Soft Component
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Is 3C 273 a simple power-law at high energies?
BeppoSAX 1997 BeppoSAX 2001

Grandi, P. and Palumbo, G.G.C., 2004, Science, 306, 998 Analysed 6(9) BeppoSAX observations between 1997 and 2001
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


XMM Obs. In Orbit 563

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Variability of Vela PWNe - Chandra

Observations over 2.5 Years
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


0180: 80 ksec Variability of Vela PWNe ­ XMM-PN 1169: 120 ksec

Soft Component...2.75 to 2.69 (2.2%) x 10-11 ergs/cm2/s Power Law.........7.13 to 6.61 (7.3%) x 10-11 ergs/cm2/s
unabsorbed fluxes
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Chandra

G21.5

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


G21.5

EPIC-MOS 1/2

Chandra

XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06


Prospects for a Broad-Band Effective Area Standard Candle
Compact MS2137 Crab Stable Simple BroadBand

Yes Yes Yes Yes

Yes

No

No No No Yes

Almost Yes/No ?? No Yes Yes

G21.5

Vela PWNe
XMM EPIC MOS

Steve Sembay (sfs5@star.le.ac.uk) ICWG 15/06/06