Freddy Christiansen

Freddy Christiansen

Scientist

DTU SPACE
National Space Institute

Astrophysics and Atmospheric Physics

Technical University of Denmark

Elektrovej

Building 328, room 208

2800 Kgs. Lyngby

Ph.
Fax +45 45 25 95 75
E-mail fch@space.dtu.dk
ORCID 0000-0001-9415-0621

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2020
 

A terrestrial gamma-ray flash and ionospheric ultraviolet emissions powered by lightning

Neubert, Torsten ; Østgaard, Nikolai ; Reglero, Victor ; Chanrion, Olivier ; Heumesser, Matthias ; Dimitriadou, Krystallia ; Christiansen, Freddy ; Budtz-Jørgensen, Carl ; Kuvvetli, Irfan ; Rasmussen, Ib Lundgaard ; Mezentsev, Andrey ; Marisaldi, Martino ; Ullaland, Kjetil ; Genov, Georgi ; Yang, Shiming ; Kochkin, Pavlo ; Navarro-Gonzalez, Javier ; Connell, Paul H. ; Eyles, Chris J.
in: Science

Type: Journal article (Peer reviewed)

Status: Accepted/In press     |    Year: 2020     |    DOI: https://doi.org/10.1126/science.aax3872

  PDF

First ten months of TGF observations by ASIM

Østgaard, N. ; Neubert, Torsten ; Reglero, V. ; Ullaland, K. ; Yang, S. ; Genov, G. ; Marisaldi, M. ; Mezentsev, A. ; Kochkin, P. ; Lehtinen, N. ; Sarria, D. ; Qureshi, B.H. ; Solberg, A. ; Maiorana, C. ; Albrechtsen, K. ; Budtz‐Jørgensen, C. ; Kuvvetli, I. ; Christiansen, F. ; Chanrion, O. ; Heumesser, M. ; Navarro‐Gonzalez, J. ; Connell, P. ; Eyles, C. ; Christian, H. ; Al‐Nussirat, S.
in: Journal of Geophysical Research: Atmospheres

Type: Journal article (Peer reviewed)

Status: Accepted/In press     |    Year: 2020     |    DOI: https://doi.org/10.1029/2019jd031214

 

The First Terrestrial Electron Beam Observed by The Atmosphere‐Space Interactions Monitor

Sarria, D. ; Kochkin, P. ; Østgaard, N. ; Lehtinen, N. ; Mezentsev, A. ; Marisaldi, M. ; Carlson, B.E. ; Maiorana, C. ; Albrechtsen, K. ; Neubert, T. ; Reglero, V. ; Ullaland, K. ; Yang, S. ; Genov, G. ; Qureshi, B.H. ; Budtz‐Jørgensen, C. ; Kuvvetli, I. ; Christiansen, F. ; Chanrion, O. ; Heumesser, M. ; Dimitriadou, K. ; Navarro‐González, J. ; Connell, P. ; Eyles, C.
in: Journal of Geophysical Research: Space Physics

Type: Journal article (Peer reviewed)

Status: Accepted/In press     |    Year: 2020     |    DOI: https://doi.org/10.1029/2019ja027071

2019
 

Atmosphere-Space Interactions Monitor, Instrument and First Results

Kristensen, Steen Savstrup ; Balling, Jan E. ; Brauer, Peter ; Budtz-Jørgensen, Carl ; Chanrion, Olivier ; Christiansen, Freddy ; Dimitriadou, Krystallia ; Husbjerg, Lasse ; Jessen, Niels Christian ; Kuvvetli, Irfan ; Neubert, Torsten ; Oxborrow, Carol Anne ; Pedersen, Søren Møller ; Polny, Josef ; Rasmussen, Ib Lundgaard ; Reglero, Victor ; Stoltze, Christian Bang ; Tcherniak, Denis ; Thomsen, Per Lundahl ; Ostgaard, Nikolai
part of: IGARSS 2019 - IEEE International Geoscience and Remote Sensing Symposium, pages: 8811-8814, 2019, IEEE
Presented at:
IEEE International Geoscience and Remote Sensing Symposium 2019 (IGARSS 2019 )

Type: Article in proceedings (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1109/igarss.2019.8900301

  PDF

The Modular X- and Gamma-Ray Sensor (MXGS) of the ASIM Payload on the International Space Station

Østgaard, Nikolai ; Balling, Jan E. ; Bjørnsen, Thomas ; Brauer, Peter ; Budtz-Jørgensen, Carl ; Bujwan, Waldemar ; Carlson, Brant ; Christiansen, Freddy ; Connell, Paul ; Eyles, Chris ; Fehlker, Dominik ; Genov, Georgi ; Grudziński, Pawel ; Kochkin, Pavlo ; Kohfeldt, Anja ; Kuvvetli, Irfan ; Thomsen, Per Lundahl ; Pedersen, Søren Møller ; Navarro-Gonzalez, Javier ; Neubert, Torsten ; Njøten, Kåre ; Orleanski, Piotr ; Qureshi, Bilal ; Cenkeramaddi, Linga ; Reglero, Victor ; Reina, Manuel ; Rodrigo, Juan ; Rostad, Maja ; Sabau, Maria ; Kristensen, Steen Savstrup ; Skogseide, Yngve ; Solberg, Arne ; Stadsnes, Johan ; Ullaland, Kjetil ; Yang, Shiming
in: Space Science Reviews, vol: 215, issue: 2

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2019     |    DOI: https://doi.org/10.1007/s11214-018-0573-7

2015
 

A method to derive maps of ionospheric conductances, currents, and convection from the Swarm multisatellite mission

Amm, O. ; Vanhamäki, H. ; Kauristie, K. ; Stolle, Claudia ; Christiansen, Freddy ; Haagmans, R. ; Masson, A. ; Taylor, M. G. G. T. ; Floberghagen, R. ; Escoubet, C. P.
in: Journal of Geophysical Research: Space Physics, vol: 120, pages: 3263-3282

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1002/2014JA020154

  PDF

POGO satellite orbit corrections: an opportunity to improve the quality of the geomagnetic field measurements?

Stockmann, Reto ; Christiansen, Freddy ; Olsen, Nils ; Jackson, Andrew
in: Earth, Planets and Space, vol: 67

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2015     |    DOI: https://doi.org/10.1186/s40623-015-0254-7

2010
 

Asymmetric structures of field-aligned currents and convection of ionospheric plasma controlled by the IMF azimuthal component and season of year

Lukianova, R. Yu. ; Kozlovsky, A. ; Christiansen, Freddy
in: Geomagnetism and Aeronomy, vol: 50, issue: 5, pages: 667-678

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2010     |    DOI: https://doi.org/10.1134/S0016793210050142

  PDF

Soteria deliverable 4.3: Solar wind–magnetosphere coupling and the terrestrial impact

Vennerstrøm, Susanne ; Christiansen, Freddy ; Asikainen, Timo ; Mursula, Kalevi ; Crespon, François ; Tátrallyay, M. ; Kecskeméty, K. ; Németh, Z. ; Kuzin, S. V. ; Slemzin, V. A. ; Ulyanov, A. S. ; Bogachev, S. A. ; Sylwester, J. ; Gburek, S. ; Podgorski, P. ; Kowalinski, M. ; Verigin, M. I.

Type: Report

Status: Published     |    Year: 2010

2009
 

Are small-scale field-aligned currents and magneto sheath-like particle precipitation signatures of the same low-altitude cusp?

Watermann, J. ; Stauning, P. ; Luhr, H. ; Newell, P.T. ; Christiansen, Freddy ; Schlegel, K.
in: Advances in Space Research, vol: 43, issue: 1, pages: 41-46

Type: Journal article (Peer reviewed)

Status: Published     |    Year: 2009     |    DOI: https://doi.org/10.1016/j.asr.2008.03.031


https://www.space.dtu.dk/english/research/research_divisions/geodesy_and_earthobservation/publications_geogroup/person?id=38283&tab=2&qt=dtupublicationquery
5 APRIL 2020