Multiwavelength classification of X-ray selected galaxy cluster - - PowerPoint PPT Presentation

▶

Mar 27, 2024 295 likes •535 views

Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks Matej Kosiba CEA, Saclay 1 September 2020 2/14 3/14 6/14 7/14 8/14 9/14 10/14 11/14 12/14 13/14 Conclusion 62%

SLIDE 1

Multiwavelength classification of X-ray selected galaxy cluster candidates using convolutional neural networks

Matej Kosiba

CEA, Saclay 1 September 2020

SLIDE 2

2/14

SLIDE 3

3/14

SLIDE 4

SLIDE 5

SLIDE 6

6/14

SLIDE 7

7/14

SLIDE 8

8/14

SLIDE 9

9/14

SLIDE 10

10/14

SLIDE 11

11/14

SLIDE 12

12/14

SLIDE 13

13/14

SLIDE 14

Conclusion

62% agreement between Zooniverse volunteers and experts,

however an extremely pure sample of clusters (99% agreement).

Our hand-made convolutional neural network achieved the best

average accuracy, 90%.

Future plans:
Galaxy cluster catalogue.
Object detection approach.
Utilisation of other wavelengths, radio, infrared and/or SZ effect.
Conducting cosmological studies.

14/14

SLIDE 15

Bonus Slides

SLIDE 16

SLIDE 17

SLIDE 18

SLIDE 19

SLIDE 20

SLIDE 21

Convolutional filters

SLIDE 22