Finn Erland Christensen

Finn Erland Christensen

Senior Scientist

DTU SPACE
National Space Institute

Astrophysics and Atmospheric Physics

Technical University of Denmark

Elektrovej

Building 328, room 230

2800 Kgs. Lyngby

Ph.
Fax +4545 25 95 75
E-mail finn@space.dtu.dk
ORCID 0000-0001-5679-1946

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2019
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Improved search for solar chameleons with a GridPix detector at CAST

Anastassopoulos, V. ; Aune, S. ; Barth, K. ; Belov, A. ; Braueninger, H. ; Cantatore, G. ; Carmona, J. M. ; Castel, J. F. ; Cetin, S. A. ; Christensen, F. ; Dafni, T. ; Davenport, M. ; Dermenev, A. ; Desch, K. ; Doebrich, B. ; Eleftheriadis, C. ; Fanourakis, G. ; Ferrer-Ribas, E. ; Fischer, Hanne Lis ; Funk, W. ; Garcia, J. A. ; Gardikiotis, A. ; Garza, J. G. ; Gazis, E. N. ; Geralis, T. ; Giomataris, I ; Gninenko, S. ; Hailey, C. J. ; Hasinoff, M. D. ; Hoffmann, D. H. H. ; Iguaz, F. J. ; Irastorza, I. G. ; Jakobsen, A. ; Jacoby, J. ; Jakovcic, K. ; Kaminski, J. ; Karuza, M. ; Kostoglou, S. ; Kralj, N. ; Krcmar, M. ; Krieger, C. ; Lakic, B. ; Laurent, J. M. ; Liolios, A. ; Ljubicic, A. ; Luzon, G. ; Maroudas, M. ; Miceli, L. ; Schmidt, S. ; Vogel, J. K. ; Vretenar, M. ; Wuensch, W. ; Yildiz, S. C. ; Zioutasa, K. ; Braxab, P.
in: Journal of Cosmology and Astroparticle Physics, vol: 2019, issue: 1

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1088/1475-7516/2019/01/032

 

Optical constants of magnetron sputtered Pt thin films with improved accuracy in the N- and O-electronic shell absorption regions

Soufli, Regina ; Delmotte, Franck ; Meyer-Ilse, Julia ; Salmassi, Farhad ; Brejnholt, Nicolai ; Massahi, Sonny ; Girou, David ; Christensen, Finn ; Gullikson, Eric M.
in: Journal of Applied Physics, vol: 125, issue: 8

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1063/1.5067366

2018
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A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot) Comptonization processes.

Porquet, D. ; Reeves, J. N. ; Matt, G. ; Marinucci, A. ; Nardini, E. ; Braito, V. ; Lobban, A. ; Ballantyne, D. R. ; Boggs, S. E. ; Christensen, Finn Erland ; Dauser, T. ; Farrah, D. ; Garcia, J. ; Hailey, C. J. ; Harrison, F. ; Stern, D. ; Tortosa, A. ; Ursini, F. ; Zhang, W. W.
in: Astronomy & Astrophysics, vol: 609

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1051/0004-6361/201731290

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Development of the ATHENA mirror

Bavdaz, Marcos ; Wille, Eric ; Ayre, Mark ; Ferreira, Ivo ; Shortt, Brian ; Fransen, Sebastiaan ; Collon, Maximilien ; Vacanti, Giuseppe ; Barrière, Nicolas ; Landgraf, Boris ; Sforzini, Jessica ; Booysen, Karin ; van Baren, Coen ; Zuknik, Karl-Heinz ; Della Monica Ferreira, Desiree ; Massahi, Sonny ; Christensen, Finn ; Krumrey, Michael ; Müller, Peter ; Burwitz, Vadim ; Pareschi, Giovanni ; Spiga, Daniele ; Valsecchi, Giuseppe ; Vernani, Dervis ; Oliver, Paul ; Seidel, André
part of: Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2313296

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NuSTAR observations of Mrk 766: distinguishing reflection from absorption

Buisson, D. J. K. ; Parker, M. L. ; Kara, E. ; Vasudevan, R. V. ; Lohfink, A. M. ; Pinto, C. ; Fabian, A. C. ; Ballantyne, D. R. ; Boggs, S. E. ; Christensen, F. E. ; Craig, W. W. ; Farrah, D. ; Hailey, C. J. ; Harrison, F. A. ; Ricci, C. ; Stern, D. ; Walton, D. J. ; Zhang, W. W.
in: Monthly Notices of the Royal Astronomical Society, vol: 480, issue: 3, pages: 3689-3701

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1093/mnras/sty2081

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Optical instrument design of the high-energy x-ray probe (HEX-P)

Madsen, Kristin K. ; Harrison, Fiona ; Broadway, D. ; Christensen, F. E. ; Descalle, M. ; Ferreira, D. ; Grefenstette, B. ; Gurgew, D. ; Hornschemeier, A. ; Miyasaka, H. ; Okajima, T. ; Pike, S. ; Pivovaroff, M. ; Saha, T. ; Stern, D. ; Vogel, J. ; Windt, D. ; Zhang, W.
part of: Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2314117

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Performance and stability of mirror coatings for the ATHENA mission

Della Monica Ferreira, Desiree ; Svendsen, Sara ; Massahi, Sonny ; Jafari, Atefeh ; Vu, Lan M. ; Korman, Jakob ; Gellert, Nis C. ; Christensen, Finn E. ; Kadkhodazadeh, Shima ; Kasama, Takeshi ; Shortt, Brian ; Bavdaz, Marcos ; Collon, Maximilien J. ; Landgraf, Boris ; Krumrey, Michael ; Cibik, Levent ; Schreiber, Swenja ; Schubert, Anja
part of: Proceedings of Spie, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2313275

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Silicon pore optics mirror module production and testing

Collon, Maximilien J. ; Vacanti, Giuseppe ; Barriere, Nicolas ; Landgraf, Boris ; Guenther, Ramses ; Vervest, Mark ; Van Der Hoeven, Roy ; Chatbi, Abdel ; Girou, David ; Sforzini, Jessica ; Beijersbergen, Marco W. ; Bavdaz, Marcos ; Wille, Eric ; Fransen, Sebastiaan ; Shortt, Brian ; Ferreira, Ivo ; Haneveld, Jeroen ; Booysen, Karin ; Koelewijn, Arenda ; Wijnperle, Maurice ; Lankwarden, Jan Joost ; Van Baren, Coen ; Eigenraam, Alexander ; Den Herder, Jan Willem ; Müller, Peter ; Krumrey, Michael ; Burwitz, Vadim ; Pareschi, Giovanni ; Massahi, Sonny ; Ferreira, Desirée Della Monica ; Christensen, Finn E. ; Valsecchi, Giuseppe ; Oliver, Paul ; Chequer, Ian ; Ball, Kevin ; Zuknik, Karl Heinz ; Vernani, Dervis
part of: Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2314479

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Simulating the optical performances of the ATHENA X-ray telescope optics

Sironi, G. ; Della Monica Ferreira, D. ; Spiga, D. ; Knudsen, E. Bergbäck ; 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. ; Westergaard, N. J. ; Wille, E.
part of: Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2315019

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The effect of nitrogen incorporation in boron carbide and iridium thin films

Massahi, S. ; Christensen, F. E. ; Ferreira, D. D.M. ; Dalampiras, P. ; Svendsen, S. ; Jafari, A.
part of: Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 2018, SPIE - International Society for Optical Engineering
Presented at:
SPIE Astronomical Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2018     |    DOI: https://doi.org/10.1117/12.2311622