Niels Jørgen Stenfeldt Westergaard

Senior Adviser Emeritus, National Space Institute
Astrophysics and Atmospheric Physics

https://orcid.org/0000-0001-5839-8590

Emailnjw@space.dtu.dk
Websitehttp://www.space.dtu.dk

Elektrovej, 328, 210
2800 Kgs. Lyngby
Denmark

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X-ray astronomy, X-ray telescopes

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51 Journal article
36 Article in proceedings
14 Report
11 Conference article
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NuSTAR Observations of Abell 2163: Constraints on Non-thermal Emission
Rojas Bolivar, R. A., Wik, D. R., Giacintucci, S., Gastaldello, F., Hornstrup, A., Westergaard, N-J. & Madejski, G., 2021, In : Astrophysical Journal Supplement Series. 906, 2, 13 p., 87.
Research output: Contribution to journal › Journal article › Research › peer-review
Simulating the optical performances of the ATHENA X-ray telescope optics
Sironi, G., Della Monica Ferreira, D., Spiga, D., Knudsen, E. B., Bavdaz, M., Bianucci, G., Christensen, F. E., Ferreira, I., Fioretti, V., Jegers, A. S., Lotti, S., Macculi, C., Marioni, F., Massahi, S., Molendi, S., Moretti, A., Pareschi, G., Shortt, B., Tagliaferri, G., Valsecchi, G. & 2 others, Westergaard, N. J. & Wille, E., 2018, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray. den Herder, J-W. A., Nikzad, S. & Nakazawa, K. (eds.). SPIE - International Society for Optical Engineering, Vol. 10699. 11 p. 106993N
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Open Access
File
271 Downloads (Pure)
The McXtrace AstroX toolbox: a general ray tracing software package for end to end simulation of x-ray optics for astronomical instrumentation
Knudsen, E. B., Ferreira, D. D. M., Westergaard, N. J. S., Christensen, F. E., Massahi, S., Shortt, B., Ferreira, I. & Spiga, D., 2018, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray. J-W. A. D. H., S. N. & K. N. (eds.). SPIE - International Society for Optical Engineering, Vol. 10699. p. 106993-2-106993S-7 7 p. (Proceedings of S P I E - International Society for Optical Engineering).
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Open Access
File
317 Downloads (Pure)
On X-ray telescopes in general and the Athena optics in particular
Westergaard, N. J., Ferreira, D. D. M. & Massahi, S., 2017, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 873, p. 5-11
Research output: Contribution to journal › Journal article › Research › peer-review
Optical simulations for design, alignment, and performance prediction of silicon pore optics for the ATHENA x-ray telescope
Spiga, D., Della Monica Ferreira, D., Shortt, B., Bavdaz, M., Bergback Knudsen, E., Bergbäck Knudsen, E., Bianucci, G., Christensen, F. E., Civitani, M., Collon, M., Conconi, P., Fransen, S., Marioni, F., Massahi, S., Pareschi, G., Salmaso, B., Jegers, A. S., Tayabaly, K., Valsecchi, G., Westergaard, N. J. S. & 1 others, Wille, E., 2017, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VIII. O'Dell, S. L. & Pareschi, G. (eds.). SPIE - International Society for Optical Engineering, Vol. 10399. 33 p. 103990H. (Proceedings of S P I E - International Society for Optical Engineering, Vol. 10399).
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Open Access
File
205 Downloads (Pure)

1 Active

JEM-X: The JEM-X X-ray monitor on INTEGRAL
Brandt, S., Chenevez, J., Westergaard, N. J. S., Oxborrow, C. A., Budtz-Jørgensen, C., Lund, N., Rasmussen, I. L. & Villa, G. P.
17/10/2002 → …
Project: Research

3 Conference presentations
1 Guest lectures, external teaching and course activities at other universities

Crab intensity from JEM-X and a source of "deadtime"
Niels Jørgen Stenfeldt Westergaard (Speaker)
11 Apr 2011 → 14 Apr 2011
Activity: Talks and presentations › Conference presentations
NuSTAR optic calibration
Niels Jørgen Stenfeldt Westergaard (Speaker)
11 Apr 2011 → 14 Apr 2011
Activity: Talks and presentations › Conference presentations
Hvordan observeres røntgenstråling?
Niels Jørgen Stenfeldt Westergaard (Speaker)
30 Sep 2000
Activity: Talks and presentations › Conference presentations
The INTEGRAL satellite: Lecture for Danish Society for Space Research
Niels Jørgen Stenfeldt Westergaard (Guest lecturer)
9 Feb 1998
Activity: Talks and presentations › Guest lectures, external teaching and course activities at other universities

Hvad sker der, hvis alle kinesere hopper samtidig?
Niels Jørgen Stenfeldt Westergaard
07/04/2010
1 Media contribution
Press/Media: Press / Media