Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Aleksandra Andic"'
Autor:
V. Abramenko, P. Goode, Aleksandra Andic, Wenda Cao, Kwangsu Ahn, Vasyl Yurchyshyn, Jongchul Chae
Publikováno v:
The Astrophysical Journal. 722:1970-1976
With the ever increasing influx of high resolution images of the solar surface obtained at a multitude of wavelengths, various processes occurring at small spatial scales have become a greater focus of our attention. Complex small-scale magnetic fiel
Publikováno v:
Proceedings of the International Astronomical Union. 6:339-342
Since photospheric bright points (BPs) were first observed, there has been a question as to how are they structured. Are they just single flux tubes or a bundle of the flux-tubes? Surface photometry of the quiet Sun (QS) has achieved resolution close
Autor:
Jongchul Chae, Aleksandra Andic, Vasyl Yurchyshyn, Kwangsu Ahn, Valentyna Abramenko, Wenda Cao, Philip R. Goode
Publikováno v:
The Astrophysical Journal. 714:L31-L35
Highest resolution observations made with the new 1.6 m aperture solar telescope in Big Bear Solar Observatory during this time of historic inactivity on the Sun reveal new insights into the small-scale dynamics of the Sun's photosphere. The telescop
Autor:
Philip R. Goode, Youngsik Park, Wenda Cao, Jongchul Chae, Kwangsu Ahn, Aleksandra Andic, V. Yurchysyn, V. Abramenko
Publikováno v:
The Astrophysical Journal. 713:L6-L10
Magnetic reconnection is a process in which field-line connectivity changes in a magnetized plasma. On the solar surface, it often occurs with the cancellation of two magnetic fragments of opposite polarity. Using the 1.6 m New Solar Telescope, we ob
Autor:
Aleksandra Andic
Publikováno v:
Serbian Astronomical Journal, Vol 2008, Iss 177, Pp 87-99 (2008)
Serbian Astronomical Journal, Vol 177, Pp 87-99 (2008)
Serbian Astronomical Journal, Vol 177, Pp 87-99 (2008)
High-frequency waves (5 mHz to 20mHz) have previously been suggested as a source of energy accounting partial heating of the quiet solar atmosphere. The dynamics of previously detected high-frequency waves is analysed here. Image sequences are taken
Publikováno v:
Proceedings of the International Astronomical Union. 3:312-315
High frequency acoustic waves have been suggested as a source of mechanical heating in the quiet solar chromosphere. To investigate this, we have observed intensity oscillations of several lines in the frequency interval 1.64-70mHz using data from th
Autor:
Aleksandra Andic
Publikováno v:
Solar Physics. 243:131-141
High frequency velocity oscillations were observed in the spectral lines Fe I 543.45nm and 543.29nm, using 2D spectroscopy with a Fabry- Perot and speckle reconstruction, at the VTT in Tenerife. We investigate the radial component of waves with frequ
Publikováno v:
Advances in Ecology.
We investigated influences of risk of predation by mountain lions (Puma concolor), topographic metrics at multiple scales, and vegetation, land, and snow cover on resource selection by Sierra Nevada bighorn sheep (Ovis canadensis sierrae), an endange
Autor:
Aleksandra Andic
Publikováno v:
Proceedings of the International Astronomical Union. 2:207-212
In Bosnia and Herzegovina astronomy teaching is almost nonexistent. There are only several courses within universities and they are usually given by physicists who themselves have had only elementary courses in astrophysics. When educational outreach
Autor:
Aleksandra Andic
Publikováno v:
Serbian Astronomical Journal, Vol 2011, Iss 183, Pp 87-94 (2011)
Umbral dots (UDs) were observed using the 1.6 meter solar telescope. Achieved conventional diffraction limit in the TiO 705.68 nm spectral line used was 0.1". The 418 UDs were analysed. Median diameter was 0.5'' and median intensity difference betwee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d23c4aa1bb21b4543c30ef000cbcf5ce
http://arxiv.org/abs/1111.2362
http://arxiv.org/abs/1111.2362