Finn Erland Christensen

Finn Erland Christensen

Senior Scientist

DTU SPACE
National Space Institute

Astrophysics and Atmospheric Physics
Astrophysics and Atmospheric Physics

Technical University of Denmark

Elektrovej

Building 328, room 230

2800 Kgs. Lyngby

Ph.
Fax +45 45 25 95 75
E-mail finn@space.dtu.dk
ORCID 0000-0001-5679-1946

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2017
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The weak neutral Fe fluorescence line and long-term X-ray evolution of the Compton-thick AGN in NGC 7674

Gandhi, P. ; Annuar, A. ; Lansbury, G. B. ; Stern, D. ; Alexander, D. M. ; Bauer, F. E. ; Bianchi, S. ; Boggs, S. E. ; Boorman, P. G. ; Brandt, W. N. ; Brightman, M. ; Christensen, Finn Erland ; Comastri, A. ; Craig, W. W. ; Del Moro, A. ; Elvis, M. ; Guainazzi, M. ; Hailey, C. J. ; Harrison, F. A. ; Koss, M. ; Lamperti, I. ; Malaguti, G. ; Masini, A. ; Matt, G. ; Puccetti, S. ; Ricci, C. ; Rivers, E. ; Walton, D. J. ; Zhang, W. W.
in journal: Monthly Notices of the Royal Astronomical Society (ISSN: 0035-8711) (DOI: http://dx.doi.org/ 10.1093/mnras/stx357 ), vol: 467, issue: 4, pages: 4606-4621, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/ 10.1093/mnras/stx357

 

Evidence of significant energy input in the late phase of a solar flare from NuSTAR x-ray observations

Kuhar, Matej ; Krucker, Säm ; Hannah, Iain G. ; Glesener, Lindsay ; Saint-Hilaire, Pascal ; Grefenstette, Brian W. ; Hudson, Hugh S. ; White, Stephen M. ; Smith, David M. ; Marsh, Andrew J. ; Wright, Paul J. ; Boggs, Steven E. ; Christensen, Finn Erland ; Craig, William W. ; Hailey, Charles J. ; Harrison, Fiona A. ; Stern, Daniel ; Zhang, William W.
in journal: The Astrophysical Journal (ISSN: 0004-637x) (DOI: http://dx.doi.org/10.3847/1538-4357/835/1/6), vol: 835, issue: 1, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/835/1/6

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The Phoenix galaxy as seen by NuSTAR

Masini, A. ; Comastri, A. ; Puccetti, S. ; Baloković, M. ; Gandhi, P. ; Guainazzi, M. ; Bauer, F. E. ; Boggs, S. E. ; Boorman, P. G. ; Brightman, M. ; Christensen, Finn Erland ; Craig, W. W. ; Farrah, D. ; Hailey, C. J. ; Harrison, F. A. ; Koss, M. J. ; LaMassa, S. M. ; Ricci, C. ; Stern, D. ; Walton, D. J. ; Zhang, W. W.
in journal: Astronomy & Astrophysics (ISSN: 0004-6361) (DOI: http://dx.doi.org/10.1051/0004-6361/201629444), vol: 597, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.1051/0004-6361/201629444

 

NuSTAR observations of WISE J1036+0449, a galaxy at z ∼ 1 obscured by hot dust

Ricci, C. ; Assef, R. J. ; Stern, D. ; Nikutta, R. ; Alexander, D. M. ; Asmus, D. ; Ballantyne, D. R. ; Bauer, F. E. ; Blain, A. W. ; Boggs, S. ; Boorman, P. G. ; Brandt, W. N. ; Brightman, M. ; Chang, C. S. ; Chen, C.-T J. ; Christensen, Finn Erland ; Comastri, A. ; Craig, W. W. ; Díaz-Santos, T. ; Eisenhardt, P. R. ; Farrah, D. ; Gandhi, P. ; Hailey, C. J. ; Harrison, F. A. ; Jun, H. D. ; Koss, M. J. ; LaMassa, S. ; Lansbury, G. B. ; Markwardt, C. B. ; Stalevski, M. ; Stanley, F. ; Treister, E. ; Tsai, C.-W ; Walton, D. J. ; Wu, J. W. ; Zappacosta, L. ; Zhang, W. W.
in journal: The Astrophysical Journal (ISSN: 0004-637x) (DOI: http://dx.doi.org/10.3847/1538-4357/835/1/105), vol: 835, issue: 1, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/835/1/105

 

A long look at MCG-5-23-16 with NuSTAR. I. relativistic reflection and coronal properties

Zoghbi, Abderahmen ; Matt, G ; Miller, J. M. ; Lohfink, A. M. ; Walton, D. J. ; Ballantyne, D. R. ; García, J. A. ; Stern, D. ; Koss, Michael J. ; Farrah, D. ; Harrison, F. A. ; Boggs, S. E. ; Christensen, Finn Erland ; Craig, W. ; Hailey, C. J. ; Zhang, W. W.
in journal: Astrophysical Journal (ISSN: 0004-637X) (DOI: http://dx.doi.org/10.3847/1538-4357/aa582c), vol: 836, issue: 1, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/aa582c

 

The NuSTAR serendipitous survey: the 40-month catalog and the properties of the distant high-energy X-ray source population

Lansbury, G. B. ; Stern, D. ; Aird, J. ; Alexander, D. M. ; Fuentes-Yaco, C. ; Harrison, F. A. ; Treister, E. ; Bauer, F. E. ; Tomsick, J. A. ; Baloković, M. ; Del Moro, A. ; Gandhi, P. ; Ajello, M. ; Annuar, A. ; Ballantyne, D. R. ; Boggs, S. E. ; Brandt, W. N. ; Brightman, M. ; Chen, Chien-Ting J. ; Christensen, Finn Erland ; Civano, F. ; Comastri, A. ; Craig, W. W. ; Forster, K ; Grefenstette, B. W. ; Hailey, C. J. ; Hickox, R. C. ; Jiang, Bo ; Jun, H. D. ; Koss, M. ; Marchesi, S. ; Melo, A. D. ; Mullaney, J. R. ; Noirot, G. ; Schulze, S. ; Walton, D. J. ; Zappacosta, L. ; Zhang, W. W.
in journal: Astrophysical Journal (ISSN: 0004-637X) (DOI: http://dx.doi.org/10.3847/1538-4357/836/1/99), vol: 836, issue: 1, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/836/1/99

 

A New Compton-thick AGN in Our Cosmic Backyard: Unveiling the Buried Nucleus in NGC 1448 with NuSTAR

Annuar, A. ; Alexander, D. M. ; Gandhi, P. ; Lansbury, G. B. ; Asmus, K.-D. ; Ballantyne, D. R. ; Bauer, F. E. ; Boggs, S. E. ; Boorman, P. G. ; Brandt, W. N. ; Brightman, M. ; Christensen, Finn Erland ; Craig, W. W. ; Farrah, D. ; Goulding, A. D. ; Hailey, C. J. ; Harrison, F. A. ; Koss, Michael J. ; LaMassa, S. M. ; Murray, S. S. ; Ricci, C. ; Rosario, D. J. ; Stanley, F. ; Stern, D. ; Zhang, W.
in journal: Astrophysical Journal (ISSN: 0004-637X) (DOI: http://dx.doi.org/10.3847/1538-4357/836/2/165), vol: 836, issue: 2, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/836/2/165

 

The NuSTAR Hard X-Ray Survey of the Norma Arm Region

Fornasini, Francesca M. ; Tomsick, John A. ; Hong, JaeSub ; Gotthelf, Eric V. ; Bauer, Franz E. ; Rahoui, Farid ; Stern, Daniel ; Bodaghee, Arash ; Chiu, Jeng-Lun ; Clavel, Maica ; Corral-Santana, Jesus ; Hailey, Charles J. ; Krivonos, Roman A. ; Mori, Kaya ; Alexander, David M. ; Barret, Didier ; Boggs, Steven E. ; Christensen, Finn Erland ; Craig, William ; Forster, Karl ; Giommi, Paolo ; Grefenstette, Brian W. ; Harrison, Fiona A. ; Hornstrup, Allan ; Kitaguchi, Takao ; Koglin, J. E. ; Madsen, Kristin K. ; Mao, Peter H. ; Miyasaka, Hiromasa ; Perri, Matteo ; Pivovaroff, Michael J. ; Puccetti, Simonetta ; Rana, Vikram ; Westergaard, Niels Jørgen Stenfeldt ; Zhang, William
in journal: Astrophysical Journal Supplement Series (ISSN: 0067-0049) (DOI: http://dx.doi.org/10.3847/1538-4365/aa61fc), vol: 229, issue: 2, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4365/aa61fc

 

The X-Ray Reflection Spectrum of the Radio-loud Quasar 4C 74.26

Lohfink, Anne M. ; Fabian, Andrew C. ; Ballantyne, David R. ; Boggs, S. E. ; Boorman, Peter G. ; Christensen, Finn Erland ; Craig, W. W. ; Farrah, Duncan ; Garcia, Javier Lopez ; Hailey, C. J. ; Harrison, F. A. ; Ricci, Claudio ; Stern, Daniel ; Zhang, W. W.
in journal: Astrophysical Journal (ISSN: 0004-637X) (DOI: http://dx.doi.org/10.3847/1538-4357/aa6d07), vol: 841, issue: 2, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/aa6d07

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Sagittarius A* High-energy X-Ray Flare Properties during NuStar Monitoring of the Galactic Center from 2012 to 2015

Zhang, Shuo ; Baganoff, Frederick K. ; Ponti, Gabriele ; Neilsen, Joseph ; Tomsick, John A. ; Dexter, Jason ; Clavel, Maïca ; Markoff, Sera ; Hailey, Charles J. ; Mori, Kaya ; Barriere, Nicolas M. ; Nowak, Michael A. ; Boggs, Steven E. ; Christensen, Finn Erland ; Craig, William ; Grefenstette, Brian W. ; Harrison, Fiona A. ; Madsen, Kristin K. ; Stern, Daniel ; Zhang, William
in journal: Astrophysical Journal (ISSN: 0004-637X) (DOI: http://dx.doi.org/10.3847/1538-4357/aa74e8), vol: 843, issue: 2, 2017

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2017     |    DOI: http://dx.doi.org/10.3847/1538-4357/aa74e8