Transcript TRAINEE PRESENTATION

TRAINEE PRESENTATION
The North and South Ecliptic Pole fields
population
Project supervisors:
R. Saxton
N. Loiseau
Trainee student:
Jaime Abella Payá
XMM-NEWTON SPACE TELESCOPE
INDEX
1. INTRODUCTION
2. OBJECTIVES
3. PROJECT DESCRIPTION
4. TECHNICAL DESCRIPTION
5. DATA REDUCTION ROUTINE
6. IDENTIFICATION OF SOURCES
7. RESULTS
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1. INTRODUCTION
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INTRODUCTION
THE NORTH AND SOUTH ECLIPTIC POLES(NEP AND SEP) RESPECTIVELY
ARE THE MOST FREQUENTLY OBSERVED REGIONS BY MOST SPACE
OBSERVATORIES, DURING MANOEUVRES.
A
B
NEP
FROM TARGET A TO TARGET B, THE
SPACE TELESCOPE GOES OVER THE
NEP OR THE SEP MOST OF THE TIME
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INTRODUCTION
THE IDEA OF THE SLEW PROJECT IS TO EXPLOIT THESE PATHS
OBTAINING INFORMATION ALL THE TIME
THIS WORK IS DONE USING DATA
ACQUIRED WITH THE EPIC-PN
CAMERA ON THESE PATHS
Epic-pn CCDs
.
THESE PATHS HAVE THE SHAPE OF LONG LINES BETWEEN
THE TARGETS, THESE LINES ARE CALLED SLEWS
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2. OBJECTIVES
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PROJECT GOAL
PRINCIPAL GOAL: TO GET AN X-RAY SOURCE CATALOG OF THE NORTH AND
SOUTH ECLIPTIC POLES WITH THE PRINCIPAL OBSERVATIONAL PARAMETERS
OF THEM, AND THE CORRESPONDING IDENTIFICATION (IF POSSIBLE)
THERE IS A POSIBILITY
TO OBTAIN SOME NEW
X-RAY SOURCES DUE TO:
HIGHER SENSITIVITY WHEN
COMBINING DIFFERENT SLEWS
SECONDARY GOAL: TO OBTAIN FROM PREVIOUS CATALOGS IN
OTHER FREQUENCIES A SPECTRAL DISTRIBUTION (SED) FOR EVERY
SOURCE DETECTED
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3. PROJECT DESCRIPTION
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PROJECT DESCRIPTION
NORTH & SOUTH
ECLIPTIC POLES
NEP
SEP
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PROJECT DESCRIPTION
EACH SLEW IS DIVIDED IN SINGULAR IMAGES OF 1X1 DEG.
THEN EACH IMAGE IS SAVED TO BE REDUCED SEPARATELY
IMAGE 1.1
IMAGE 1.2
IMAGE 1.3
IMAGE 1.4
IMAGE 1.5
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INFORMATION PROCESSING
THE XMM-NEWTON SENDS
US THE OBSERVATIONS
1. ONE FOLDER IS CREATED
FOR EACH SQUARE AREA
IN THE NEP (SEP)
2. PROCESS_POSITION ROUTINE :
COLLECTS AND SAVES
ALL SLEWS IN
2 DEG OF RADIO
SLEWS
4. SLEWSEARCH ROUTINE:
CREATES ONE DEG² IMAGES
AROUND THE POSITIONS, AND USES
DETECTION CHAINS TO FIND
AND STORE THE X-RAY SOURCES
3. MAKE MOSAIC ROUTINE:
COMBINES THE SLEWS AND
PRODUCES IMAGES AND
EXPOSURE MAPS
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FINAL CATALOG
4. TECHNICAL DESCRIPTION
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TECHNICAL DESCRIPTION
THE CARACHTERISTICS OF THE SLEWS:
Soft-band Image for Vela SNR using
some slews
Average 70deg. Long 30deg² area
Slews subdivided in 1 deg²
Epic -PN camera
Typical exposition time ~15 sec.
Low background
Positional accuracy 8”
Energy bands
-Total band (0,2-12 Kev)
-Soft band (0,2-2 Kev)
-Hard band (2-12 Kev)
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TECHNICAL DESCRIPTION
THE AREA AROUND THE NEP IS DIVIDED IN 121 SQUARES OF 1 DEG²
WHICH WERE ANALIZED INDIVIDUALLY
THE CENTRAL POSITION IS THE NEP:
NEP POSITION: 18h00m00s r.a.
+66º33´39´´ dec.
THE TOTAL REGION CONSIDERED IS:
265.0 to 275.0 r.a.
And +62.5 to +72.5 dec.
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TECHNICAL DESCRIPTION
THE PRINCIPAL FEATURE OF THIS PROJECT IS THE POSSIBILITY TO OBTAIN
HIGH LEVELS OF RESOLUTION AND DETECTION WITH
THE SAME INSTRUMENTS AS ALWAYS
How?
IN THE CROSSING AREAS WITHIN THE SLEWS
WE FOUND MORE ACUMULATION OF PHOTONS,
SO THE DETECTION INCREASES
Vela SNR
IN TEN YEARS OF OBSERVATIONS
THERE IS A BIG STORE OF INFORMATION TO USE
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5. DATA REDUCTION
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DATA REDUCTION
PROCESS_POSITION
PROCESS POSITION SCRIPT SEARCHES AROUD THE REQUESTED POSITION
THE CLOSEST SLEWS THAT PASSES OVER A CIRCLE OF 2 DEG RADIO
THEN TAKES THESE SLEWS FROM THE DATABASE
AND SAVES THEM IN THE CORRESPONDING FOLDER MAKING ALSO A LIST
OF THESE SLEWS
SETTINGS
THE CENTRAL REGION OF THE FIELD CONTAINS MORE NUMBER
OF SLEWS THAN THE SURROUNDINGS
MORE COMPLETE CATALOG NEAR TO THE NEP
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DATA REDUCTION
MAKE_MOSAIC
ALL THESE SLEWS ARE COMBINED BY THE MAKEMOSAIC ROUTINE
LIKE WE MENTIONED BEFORE, FIRST OF ALL THIS SCRIPT DIVIDES A
SLEW IN SINGLE IMAGES OF 1DEG² , THEN COMBINES THEM TO PRODUCE
IMAGES OF 2 DEG² APROX. AND EXPOSURE MAPS OF THE SAME SIZE
THIS IS VERY DIFICULT BECAUSE SLEWS
HAVE DIFFERENT ORIENTATIONS
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DATA REDUCTION
SLEWSEARCH
THIS SCRIPT USES THE RESULTING IMAGES AND EXPOSURE MAPS
FROM THE MAKEMOSAIC SCRIPT TO SEARCH SOURCES IN THEM
FOR THE DETECTING PART IT RUNS THE EBOXDETECT ROUTINE
AND SPECIALLY DESIGNED ROUTINES FOR THE SLEW IMAGES
THE FINAL PRODUCT IS A LIST OF THE SOURCES WITH DATA
THE MOST RELEVANT ARE:
RIGHT ASCENSION
DECLINATION
RELEVANCY OF THE SOURCE
FLUXES
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SOURCE EXTENSION
6. IDENTIFICATION OF SOURCES
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IDENTIFICATION OF SOURCES
WITH THE SOURCE LIST GIVEN BY SLEWSEARCH LIST SOME OF THE
PARAMETERS AND LOOKING INTO THE EXISTING X-RAY CATALOGS LIKE
ROSSETA, CHANDRA, ETC SOURCES WILL BE IDENTIFIED BY
SEARCHING SOURCES IN THE SAME POSSITION
THE CONDITION FOR THE IDENTIFICATION IS:
ANGULAR DISTANCE < 0.3 ARCMIN
EMISSION IN X-RAY BAND
THE POSITION ERROR DEPENDS TOO ON THE EXTENSION OF THE SOURCE,
EXTENDED SOURCES HAVE BIGGER ERROR THAN POINT-LIKE ONES
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7. RESULTS
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RESULTS
AT PRESENT THE THERE ARE 171 SOURCES DETECTED IN THE NEP, 20% OF
THEM ARE NOT YET IDENTIFIED
THESE SOURCES ARE EXPECTED TO BE TOO FAINT SOURCES FOR
THE OTHER X-RAY TELESCOPES, SO PROBABLY THEM COULD BE NEW
EXAMPLE
ZW 300.062 IS A SOURCE AT
265.8170 r.a.
62.8412 dec.
CHARACTERISTICS:
0.318 counts/sec
26.16 of relevance
0.138 of angular distance to requested position
0,033 of Redshift
ID: AGN
SPACE TELESCOPE
Catalog: Quasars and ActiveXMM-NEWTON
Galactic Nuclei
(12th Ed.) (Veron+ 2006)
RESULTS
FINAL MOSAIC WITH
ALL THE IMAGES COMBINED
AND ALL THE DETECTIONS
IN GREEN WITH ECLIPTIC
COORDINATES
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THANKS FOR YOUR ATTENTION!
ANY QUESTIONS?
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