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Proceedings Paper

Observing the WHIM with Athena
Author(s): T. Brand; J. Wilms; T. Dauser; P. Peille; B. Cobo; M. Ceballos; R. A. den Hartog; J. S. Kaastra; P. O'Brien; X. Barcons; L. Piro; J.-W. A. den Herder; D. Barret
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Paper Abstract

We present simulations of the detection probability for absorption lines from ions in the warm and hot ionized medium (WHIM) with Athena in the spectra of Gamma-ray burst afterglows. The simulations are based on Swift XRT lightcurves of these afterglows and are performed using the end-to-end simulation framework SIXTE. We simulate both the case of single and multiple absorption lines, as well as results for line searches in absorption structures from a more complex medium. We show that the Athena X-IFU can detect WHIM lines with strong Ovii lines (equivalent widths larger than 0.14 eV) in spectra containing 3 x 106 counts.

Paper Details

Date Published: 18 July 2016
PDF: 8 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 99055F (18 July 2016); doi: 10.1117/12.2234442
Show Author Affiliations
T. Brand, Univ. Erlangen-Nürnberg (Germany)
J. Wilms, Univ. Erlangen-Nürnberg (Germany)
T. Dauser, Univ. Erlangen-Nürnberg (Germany)
P. Peille, Institut de Recherche en Astrophysique et Planétologie (France)
B. Cobo, Univ. de Cantabria (Spain)
M. Ceballos, Univ. de Cantabria (Spain)
R. A. den Hartog, SRON Netherlands Institute for Space Research (Netherlands)
J. S. Kaastra, SRON Netherlands Institute for Space Research (Netherlands)
P. O'Brien, Univ. of Leicester (United Kingdom)
X. Barcons, Univ. de Cantabria (Spain)
L. Piro, Istituto Nazionale di Astrofisica - Istituto di Astrofisica e Planetologia Spaziali (Italy)
J.-W. A. den Herder, SRON Netherlands Institute for Space Research (Netherlands)
D. Barret, Institut de Recherche en Astrophysique et Planétologie (France)


Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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