Transcript WR25 Carina Nebula

EPIC Background Working Group
Summary: Meeting 11/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
BG web pages accessible from main XMM web page
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM-ESAS : Example (SS/KK)
•XMM-ESAS processing
of the two observations
of Abell 1835 yield the
same results.
•Temperature radial
profiles for A1835 from
two separate
observations.
• Two observations have
very different
background conditions –
one is very low BG –
one is very soft proton
flare dominated
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM-ESAS : Background Subtracted and
Exposure Corrected Images
2.0-8.0 keV
0.35-1.25 keV
Background subtracted and exposure corrected images of Abell 1795
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM-ESAS - Mosaicked Images
Mosaic of M101
observations.
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Blank Sky Analysis
JAC/AMR
Current status, April 2007
•
Files+software being used, comments +
suggestions/questions coming in
•
Paper published: A&A, 464, 1155, 2007
•
File issues from several users – dealt with
individually – new products released/to be
released
•
RA/Dec Selector tool - trial in java
•
Event Ghosting tool – available on web
already:
•
XMM
EPIC
MOS
http://www.star.le.ac.uk/~jac48/tools/
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Papers accepted, submitted,
in preparation...
A&A, 464, 1155, 2007
XMM
EPIC
MOS
A&A, submitted
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
New MOS FWC files (each ~65MB) created from all of the FWC data for which:
• All chips were on in full imaging mode
• All chips were in their "normal" state
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Can create images, spectra and time-series using XMM-SAS
All-CCD pn multi-exposure-stacked FWC data (all modes) are also available
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Compares the flux in and out of the FOV
for any EPIC event file to estimate the
amount of residual Soft Proton flare
contamination…
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Script to perform image
creation + cleaning + exposure
correcting + smoothing + …
•
Runs cifbuild, odfingest, epchain,
emchain, (omichain)
•
Performs gti file preparation, gti
cleaning, cleans bad pixels and
columns, subtracts ooT events (pn)
•
Makes images, exposure maps,
masks, smoothes images, makes
combined exposure map and mask
•
Weighs pn against MOS cameras in
each band
•
Use images, exposure maps, masks
and weights to combine images from
all cameras
(M. Ehle, R. Willatt, W. Pietsch, M. Bauer)
SN2004dj in NGC 2403
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
WR25 Carina Nebula
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
M 83
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Soft Proton Flaring (KK/SS) (JAC/AMR looking at pn equivalent)
Soft proton flaring is very
dependent on the geometry of the
observation. Plotted here is the
good-time fraction as a function of
time of year and position of XMM
in its orbit.
XMM
EPIC
MOS
Plotted here is the good-time fraction
as a function of position of XMM in
its orbit. The black lines show the
position of the magnetosheath. Large
values of GSE-X occur during
summer.
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
•BG pages accessible from main XMM front page
•Talks from all meetings available at EPIC-cal site…
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
RGS background count rate - sensitive to both soft protons (few 100s keV) plus higher
energy radiation (MeVs),
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Step 1 – Filter the Data and Extract Spectra
Comparing the de
Luca and Molendi ratio
criteria (8-12 keV
band) and the fitted
flux for screened
observations does aid in
the identification of
observations affected
by residual
contamination.
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Step 2 – Model the Quiescent Particle Background
Temporal variation of the 0.3-10.0 keV count rate from the CCD
Andy Read ([email protected]) for the BGWG
XMM
corners
EPIC
CAL/OPS/BG Meeting
MOS
Palermo, Sicily 11-13/04/07
Step 2 – Model the Quiescent Particle Background
Temporal variation of the (2.5-5.0)/(0.4-0.8) keV ratio from the CCD corners
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
MOS1-4 Anonymous State
Images from MOS1-4 in 0.3-1.0
keV an the anonymous anomalous
-1
state. Values are the counts ks for one ninth of the CCD
Monthly FWC exposures of 10ks would produce 20 counts for each
CCD ninth, enough for some tracking of the state and sufficient to produce
2160 counts/chip/year (enough for spectral analysis) in the standard state
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
OMC2
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
XMM
EPIC
MOS
Andy Read ([email protected]) for the BGWG
CAL/OPS/BG Meeting
Palermo, Sicily 11-13/04/07
Flare-Free Fraction as a function of orbital position (using ~entire EPIC dataset)
GSE-X points towards the sun. GSE-X-GSE-Y plane is the plane of the ecliptic. GSE-Z is towards the north pole. Red
indicates higher values.
Flare-Free Fraction
Total Observation Time (max~80 ks)
to Sun
K.Kuntz
The best observations are made:
• When the spacecraft is as far from the earth as possible
• and at 180 degrees from the sun.
Andy Read ([email protected]) for the BGWG
XMM
• Towards theEPIC
sun seems to be better than 90 degrees
from the sun.
CAL/OPS/BG
Meeting
MOS
Palermo, Sicily 11-13/04/07
• Given the orbit, the best observations will be done in Winter.