1 / 9

Studying extended sources with JEM-X

Studying extended sources with JEM-X. N iels Lund Danish National Space Center. ASCA and JEM-X images of SN 1006. JEM-X 3-4 keV JEM-X 4-8 keV. ASCA 0.4-8 keV. JEM-X imaging of extended sources Coma cluster. 3 to 4 keV 4 to 8 keV.

una
Download Presentation

Studying extended sources with JEM-X

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Studying extended sources with JEM-X Niels Lund Danish National Space Center Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 1

  2. ASCA and JEM-X images of SN 1006 JEM-X 3-4 keV JEM-X 4-8 keV ASCA 0.4-8 keV Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 2

  3. JEM-X imaging of extended sources Coma cluster 3 to 4 keV 4 to 8 keV Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 3

  4. Exciting JEM-X images of NGC 1275 ! 3-4 keV 4-8 keV JEM-X psf (GRS1915+105) BUT ... 8-14 keV 14-35 keV Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 4

  5. .. there were problems .. The JEM-X image of the X-ray halo of NGC 1275 did not match with what was observed with XMM. White: XMM 2-7 keV Green: JEM-X 4-8 keV Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 5

  6. The origin of the ”Perseus problem” • The Perseus observation was done in staring mode, therefore all the image artefacts appear with full power in the final image. Most other observations are done using dithering and then the artefacts are spread over the image. • At the higher energies the JEM-X shadowgrams have a bright rim, and when making the first Perseus images we were not not sufficiently conservative when selecting data. Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 6

  7. ... the final data selection for Perseus: Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 7

  8. Final Perseus images 3-4 keV 4-8 keV JEM-X psf (GRS1915+105) 8-14 keV 14-35 keV Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 8

  9. ... the final data selection for Perseus: But we still have many shadowgram features which have not been accounted for in our analyses. The work continues ... Extended sources with JEM-X, ESTEC| 21. januar 2005 | Ref | side 9

More Related