[1] Urban Brändström, Björn Gustavsson, and Others. Prel. on the resolution limits during photon-limited imaging. J. TBD., 2013. (in preparation). [ bib ]
[2] I. Sandahl, U. Brändström, and T. Sergienko. Fine structure of aurora. Int. J. Remote Sensing, 2010. Accepted for publication. In press. [ bib ]
[3] Berndt Urban Eugén Brändström, Björn Gustavsson, Asta Pellinen-Wannberg, Mike Rietveld, and Ingrid Sandahl a. ALIS - a powerful instrument for ionospheric studies together with EISCAT. J. TBD., 2007. (in preparation). [ bib ]
[4] Tima Sergienko, Ingrid Sandahl, Björn Gustavsson, Urban Brändström, Mike Rietveld, and Thomas Leyser. Auroral arc modulation caused by heating of the ionosphere by powerful hf radio waves. J. TBD., 2007. [ bib ]
In the evening of November 21, 2003 an ionosphere heating experiment was conduced in Tromsø to investigate the effects caused by powerful HF pumping of the ionopshere. During a time interval of 4 minutes, when the heating beam illuminated a region of upward field-aligned current, the sudden appearance of an auroral arc was observed by the ALIS imagers. Strong temporal variations of the arc were coincident with the HF pumping modulation period. Analysis of optical data and ionospheric parameters measured by EISCAT shows that the auroral arc was stimulated due to modification of the ionosphere-magnetosphere current system caused by modulated HF heating of the ionosphere.

[5] C. Liu, C. Liu, H. Kil, S. Oh, LJ Paxton, E. Talaat, L. Tsai, L. Tsai, C. Liu, T. Hsiao, et al. Study the Upper Atmosphere Using FORMOSAT 3/COSMIC GPS Radio Occultation Data. In American Geophysical Union, Fall Meeting 2007, abstract# SA11B-02, 2007. [ bib ]
[6] I. Sandahl, U. Brändström, T. Sergienko, B. Gustavsson, and T. Aso. Investigations Based on the 3D Distribution of Optical Emissions at High Latitudes Obtained by ALIS. In American Geophysical Union, Fall Meeting 2007, abstract# SA11B-08, 2007. [ bib ]
[7] Timophey Sergienko, Björn Gustavsson, Urban Brändström, and Others. ALIS/FAST. J. TBD., 2006. (in preparation). [ bib ]
[8] Björn Gustavsson, Peter Rydesäter, Berndt Urban Eugén Brändström, Takehiko Aso, and Åke Steen. Spectral absolute calibration of CCD-imagers. J. TBD., 2004. (draft manuscript). [ bib ]
[9] Ingrid Sandahl, Urban Brändström, Thomas Leyser, Asta Pellinen-Wannberg, and Timophey Sergienko. Fine structures of optical emissions from phenomena in the ionosphere investigated using 3D tomographic spectroradiometry. Vetenskapsrådet, Ansökan om forskningsbidrag, 2004. IRF Dnr 232-xxxx. [ bib | http | .pdf ]
[10] T. Sergienko, Björn Gustavsson, Urban Brandstrom, Ingrid Sandahl, and Åke Steen. The optical emissions during the HF ionosphere modifications: the ALIS results. COSPAR abstract, 2004. COSPAR abstract. [ bib ]
[11] Urban Brändström. Statusrapport för ALIS minnesanteckningar och stöd för projektplanering. ALIS internal note, November 2003. [ bib | http | .pdf ]
[12] Urban Brändström and Ingrid Sandahl. Project plan for ALIS 2004-2006. ALIS internal note, November 2003. [ bib | http | .pdf ]
[13] Urban Brändström. Restarting ALIS Feasibility study. ALIS internal note, August 2003. [ bib | http | .pdf ]
[14] M. J. Kosch, B. Gustavsson, M. T. Rietveld, and the campaign teams of 1999-2002. An overview of high-latitude HF induced aurora from EISCAT. In ?, 2002. [ bib ]
[15] Urban Brändström. ALIS stängt för säsongen. email to alis_folk@irf.se 2001-04-11, April 2001. (in Swedish). [ bib ]
[16] Urban Brändström. ALIS, a brief technical summary of the current situation. ALIS internal note, March 2001. [ bib ]
[17] Björn Gustavsson, Ingemar Häggström, Mikael Hedin, Urban Brändström, and Timophey Sergienko. Application for EISCAT time, 2001. [ bib ]
[18] Ingrid Sandahl, Hans Nilsson, Timophey Sergienko, Bo Thidé, Asta Pellinen Wannberg, and Urban Brändström. Study of the fine-structure of the auroral ionosphere/thermosphere by 3D optical tomographic techniques. Vetenskapsrådet, Ansökan om forskningsbidrag, 2001. IRF Dnr 232-163/01. [ bib ]
[19] Urban Brändström. Reduction of CCD images from ALIS. ALIS internal note, May 2000. (Intended for CCD-course). [ bib ]
[20] Viktor A. Alpatov, A. A. Matveev, Carl-Fredrik Enell, Björn Gustavsson, and Urban Brändström. Investigations of the polar atmosphere with the use of dynamical characteristics of the processes and self-organizing neural networks on ground-based multi-position optical observations. In Proceedings of the EGS General Assembly, 2000. [ bib ]
[21] Urban Brändström. ALIS-2000 a feasibility study. ALIS internal note, May 1999. (unpublished). [ bib | .pdf ]
[22] Urban Brändström, Åke Steen, Björn Gustavsson, Peter Rydesäter, Takehiko Aso, and Masaki Ejiri. ALIS - a versatile multi-station imaging facility at high latitudes. II. design principles and technical introduction. Was converted to braendstroem2003irf (PhD thesis), 1999. [ bib ]
[23] Åke Steen, Urban Brändström, Björn Gustavsson, Peter Rydesäter, Takehiko Aso, and Masaki Ejiri. ALIS - a versatile multi-station imaging facility at high latitudes. I. scientific rationale and initial results. (draft manuscript), 1999. [ bib ]
[24] Urban Brändström. Definition of Aritmathea, a minimalistic language for controlling ALIS. ALIS internal note, October 1998. (unpublished). [ bib ]
[25] Victor V. Alpatov, Urban Brändström, Åke Steen, and Björn Gustavsson. Fractal analysis of auroral images from ALIS. (poster presentation), 1996. The third international substorm conference (ICS3), Paris, France. [ bib ]
[26] Victor Alpatov, Åke Steen, and Urban Brändström. Fractal analysis of the ALIS auroral images. (draft manuscript), 1996. [ bib ]
[27] Urban Brändström and Åke Steen. First draft of a preliminary report on the evaluation of the prototype version of the AstroMed 4400 quad output CCD imaging system. ALIS internal note, 1994. (unpublished). [ bib ]
[28] Urban Brändström. ALIS Housekeeping Unit, Firmware reference. Swedish Institute of Space Physics, 3.02 edition, November 1993. [ bib ]
[29] Björn Gustavsson, Åke Steen, and Urban Brändström. Cheap method to absolute calibrate CCD-cameras. draft exists. [ bib ]
[30] Tima Sergienko, Ingrid Sandahl, Björn Gustavsson, Urban Brändström, and Åke Steen. Auroral arc triggering by powerful HF ionospheric heating. Abstract for EISCAT workshop 2005. [ bib ]
On November 21, 2003 an ionosphere heating experiment was conducted in Tromsø to investigate the optical effects caused by powerful HF pumping of the ionosphere. During the time interval 18:32 - 18:36 UT, when the heating beam illuminated a region of an upward field-aligned current, sudden appearance of an auroral arc was observed by the ALIS cameras. Strong temporal variations of the intensity of the arc were coincident with the HF pumping modulation period. Analysis of the optical data and the ionospheric parameters measured by the UHF ESCAT radar show that the observed auroral arc was triggered by Alfvén waves exited by modulated HF heating of ionosphere.

[31] Tima Sergienko, Björn Gustavsson, Urban Brändström, and Åke Steen. Study of the auroral ionosphere-magnetosphere interaction with ALIS: The recent results. FMI seminar? [ bib ]
[32] Tima Sergienko, Laila Andersson, Björn Gustavsson, Urban Brändström, and Åke Steen. Study of the fine auroral structure with conjugate fast-alis measurements. ***UPO: UNIDENTIFIED PUBLICATION OBJECT***. [ bib ]

This file was generated by bibtex2html 1.91.