X-Ray Vision
60
X-Ray Vision
description
X-Ray Vision. Why is it important to progress to bigger and better telescopes?. ROSAT All Sky Survey. Chandra. Hubble. Look at this level of detail!. Look for objects that have x-ray sources near the center!. Criteria #1. Terzan 12. IC 1276. NGC 6171. NGC 4833. NGC 6541. NGC 6717. - PowerPoint PPT Presentation
Transcript of X-Ray Vision
X-Ray Vision
Why is it important to progress to bigger and better telescopes?
ROSAT All Sky Survey Chandra Hubble
Look at this level of detail!
Criteria #1
Look for objects that have x-ray sources near the center!
Terzan 12
IC 1276
NGC 6171
NGC 4833
NGC 6541
NGC 6717
Lynga 7
Terzan 3
NCG 6362
NGC 6749
TON 2
NGC 6273
NGC 6723
NGC 6287
Looking at X-ray sources
Objects sometimes have more than 1 x-ray source.
Now look to see which sources are closest to the centers of the globular clusters.
NGC 6541
1
2
NGC 6717
1
2
Lynga 7
1
3
5
4
26
NGC 6749
1
TON 2
12
3 4 6
5
NGC 6273
3
5
1 2
4
NGC 6723
1
4
3
6
2 5
7
NGC 6287
1
6
354
2
To: [email protected]: [email protected]: X-ray source information
Dear Dr. Morris,
Here are the 10 x-ray sources that we would like more information on:
NGC 6541 Source 1NGC 6717 Sources 1-2Lynga 7 Sources 1-4NGC 6749 Source 1Ton 2 Source 1NGC 6723 Source 1
We need the additional information ASAP because we only have 20 minutes of class left.
Thank you!Mrs. Tykoski’s 7th Period Class
Hi there! The next thing you want to look for is the number of photons (energy packets) in the 3 groups. X-ray astronomers divide these photons into 3 groups: high energy photons, medium energy photons, and low energy photons. The best x-ray sources will have similar numbers of photons in all 3 of these bands.
I’m attaching this information for 9 of the 10 sources you requested. We had a telescope malfunction when looking at NGC 6723. You need to narrow down your list to 3 X-ray sources for me to send on to Chandra. I will need your recommendation by today.
Cheers,Dr. David Morris
To: [email protected] From: [email protected]: X-ray source information
Criteria #2
Look for sources that have similar numbers in the low, medium, and high energy bands in the X-ray
NGC 6541 Source 1
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
numbe
r of h
igh en
ergy p
hoton
s0
2
4
6
8
10
12
14
16
18
NGC 6541 Source 2
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
0.5
1
1.5
2
2.5
3
3.5
NGC 6717 Source 1
number
of low
energ
y phot
ons
numbe
r of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hotons
0
1
2
3
4
5
6
7
8
9
Lygna 7 Source 1
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
7
Lygna 7 Source 2
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
numbe
r of h
igh en
ergy p
hoton
s0
1
2
3
4
5
6
7
8
9
Lygna 7 Source 3
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
7
Lygna 7 Source 4
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
0.5
1
1.5
2
2.5
3
3.5
Lygna 7 Source 5
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
7
Lygna 7 Source 6
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
2
4
6
8
10
12
14
16
18
20
Series1
NGC 6749 Source 1
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
NGC 6717 Source 2
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
TON 2 Source 1
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
8
TON 2 Source 2
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
TON 2 Source 3
numbe
r of lo
w energ
y phot
ons
numbe
r of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
20
40
60
80
100
120
140
TON 2 Source 4
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
8
9
TON 2 Source 5
numbe
r of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
2
4
6
8
10
12
TON 2 Source 6
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
NGC 6273 Source 1
numbe
r of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
NGC 6273 Source 2
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
NGC 6273 Source 3
number of low energy photons number of medium energy photons number of high energy photons0
2
4
6
8
10
12
14
16
18
NGC 6273 Source 4
number of low energy photons number of medium energy photons number of high energy photons0
2
4
6
8
10
12
NGC 6273 Source 5
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
5
10
15
20
25
30
35
40
45
50
NGC 6287 Source 1
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
NGC 6287 Source 2
number of low energy photons number of medium energy photons number of high energy photons0
1
2
3
4
5
6
7
NGC 6287 Source 3
number of low energy photons number of medium energy photons number of high energy photons0
2
4
6
8
10
12
14
16
18
NGC 6287 Source 4
number of low energy photons number of medium energy photons number of high energy photons0
2
4
6
8
10
12
14
NGC 6287 Source 5
number
of lo
w energ
y phot
ons
numbe
r of m
edium
energ
y pho
tons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
7
8
NGC 6287 Source 6
number
of lo
w energ
y phot
ons
number
of m
edium
energ
y phot
ons
number
of hi
gh en
ergy p
hoton
s0
1
2
3
4
5
6
7
8
To: [email protected]: [email protected]: Final recommendation
Dear Dr. Morris,
Here are the 3 x-ray sources that we recommend for Chandra:
Lygna 7 Source 4Lygna 7 Soruce 3NGC 6717 Source 1
We hope we made good picks!
Wow! I’m really impressed with how much data reduction you did in such a short period of time! Thank you for helping me out with this. I’ll send the recommendations to Chandra!
Cheers,Dr. David Morris
To: [email protected] From: [email protected]: Final recommendation
List one thing you learned about x-ray astronomy from this activity
List one thing that you thought worked well during this activity.
List one Improvement for this activity (constructive comments only!)
Survey
