Zobrazeno 1 - 9
of 9
pro vyhledávání: '"T. J. Spirock"'
Publikováno v:
Solar Physics. 238:207-217
We discuss a near-infrared (NIR) narrow-band tunable birefringent filter system newly developed by the Big Bear Solar Observatory (BBSO). This is one of the first narrow-bandpass NIR filter systems working at 1.56 μm which is used for the observatio
Publikováno v:
Chinese Journal of Astronomy and Astrophysics. 4:481-489
We compare the contrast of faculae, in visible light and in the near infrared (NIR), that were associated with the active region NOAA 8518 which crossed the solar disk from April 19 to 27, 1999. We obtained NIR continuum images at 1.6 um at the Big B
Publikováno v:
The Astrophysical Journal. 597:1135-1144
We analyzed time variations of turbulent parameters of the photospheric magnetic field of four active regions obtained during the course of major solar flares using longitudinal magnetograms from the Big Bear Solar Observatory and from SOHO/MDI full-
Publikováno v:
Solar Physics. 211:221-229
Using data obtained with the 20-cm Hα full-disk telescope at Big Bear Solar Observatory and Fe xii 195 A EIT on SOHO, we analyze a sudden disappearance event of a quiescent filament in detail. The filament was located along the common boundary of th
Autor:
Philip R. Goode, Hong Sik Yun, T. J. Spirock, Haimin Wang, Sara F. Martin, Jung-Hoon Kim, Jongchul Chae, Sangwoo Lee
Publikováno v:
The Astrophysical Journal. 548:497-507
Observations have shown that quiescent prominences or filaments have a hemispheric magnetic pattern of chirality. Motivated by the question of whether the filament chirality is of subsurface origin or not, we have studied small magnetic bipoles that
Publikováno v:
The Astrophysical Journal. 542:1080-1087
We analyzed high-cadence observations of a C5.7 flare on 1999 August 23 at Big Bear Solar Observatory (BBSO). The observing wavelength was 1.3 A in the blue wing of Hα, with a cadence of 0.033 s. In addition, the hard X-ray's time profile obtained b
Publikováno v:
Solar Physics. 195:333-346
There have been two different kinds of explanations for the source of cool material in prominences or filaments: coronal condensations from above and cool plasma injections from below. In this paper, we present observational results which support fil
Autor:
J. Nenow, R. Fear, J. R. Varsik, S. Yang, D.D. Dingley, W. H. Marquette, Philip R. Goode, Carsten Denker, Haimin Wang, T. J. Spirock
Publikováno v:
Solar Physics. 183:1-13
A new digital magnetograph system has been installed and tested at Big Bear Solar Observatory. The system uses part of BBSO's existing videomagnetograph (VMG) system: a quarter wave plate, a ferro-electric liquid crystal to switch polarizations, and
Autor:
Carsten Denker, J. Nenow, S. Shoumko, A. P. Verdoni, Roy Coulter, M. A. Saadeghvaziri, D. Ren, Jongchul Chae, Haimin Wang, Jeff Kuhn, Philip R. Goode, Yong-Jae Moon, V. Abramenko, R. Fear, Youngsik Park, T. J. Spirock, Alexandra Tritschler, J. R. Varsik, Guo Yang, Wenda Cao
Publikováno v:
SPIE Proceedings.
The New Solar Telescope (NST) project at Big Bear Solar Observatory (BBSO) now has all major contracts for design and fabrication in place and construction of components is well underway. NST is a collaboration between BBSO, the Korean Astronomical O