1 / 12

Vadim Burwitz EPIC Calibration Meeting October 2006, Mallorca

Further work on cross-calibration results obtained from observations of the INS RX J1856 , and the WDs HZ 43 and Sirius B. Vadim Burwitz EPIC Calibration Meeting October 2006, Mallorca. Overview. Paper on this topic published in 2006 A&A 458, 541 Absolute Calibration Soft X-rays

audrey-cunningham
Download Presentation

Vadim Burwitz EPIC Calibration Meeting October 2006, Mallorca

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. Further work on cross-calibrationresults obtained from observations of the INS RX J1856, and theWDs HZ 43 and Sirius B Vadim Burwitz EPIC Calibration Meeting October 2006, Mallorca

  2. Overview • Paper on this topic published in 2006 A&A 458, 541 • Absolute Calibration Soft X-rays  dependant on model spectra of WDs what models to use?, uncertainties? • Analyse LETG + HRC-S data HZ 43A, Sirius B and RX J1856.5-3754  determine spectral parameters  improve effective area. • Compare obtained photon spectra with EUVE and ROSAT and XMM (work together with Frank Haberl)

  3. The Paper published: 2006 A&A 458, 541 Establishing HZ43 A, Sirius B, and RX J185635-3754 as soft X-ray standards: a cross-calibration between the Chandra LETG+HRC-S, the EUVE spectrometer, and the ROSAT PSPCK. Beuermann, V. Burwitz and T. Rauch

  4. NLTE pure H model spectrum of HZ43

  5. HZ43 temperature vs. gravity

  6. RX J1856-37 two temperature bb fit

  7. RX J1856-37 two temperature bb fit

  8. Simultaneous fit to RXJ1856 and the WDs

  9. Parameters obtained from fit

  10. EUVE Comparison of photon spectra

  11. RX J1856.5–3754: A `stable‘ neutron star Individual fits with all parameters free: Simultaneous fits with NH linked: Model: tbabs*bbody from Frank Haberl

  12. Summary

More Related