NST Gallery


TiO movie showing emergence of a new magnetic flux in the photosphere (encircled) of an active region NOAA 11109. Here a small sunspot is partially surrounded by a penumbra, and an elongated granule-like feature forms at the tip of the penumbral filament. The field of view is about 11.6" by 11.6". )
(Posted: June 7, 2011)
Top panel: Stokes V image of SDO/HMI; Three bottom panels: Vector magnetogram of a cluster of pores near AR 11121 at 231E 391S, taken on Nov. 09, 2010. Q, U, and V denote calibrated NST/IRIM Stokes Q, U and V images. Dual-beam technology was employed to minimize seeing-induced noise. The center of the strongest pore has a longitudinal magnetic field strength of about 1 kG. The field of view of IRIM is about 50"x25". (Posted: June 6, 2011)
By tracking NST TiO bright points, we can measure their mobility over different time intervals. The result is a so called displacement spectrum, which obeys the power law. We have found that the corresponding power index sigificantly exceeds unity (1.53 ± 0.005). This is an indication of super-diffusivity of the magnetic fields in the solar photosphere. In this regime, the diffusion coefficient is directly proportional to the spatial scales. This is the first time that superdiffusivity was detected in the photosphere. This new finding may lead us to fundamentally different physics of magnetic flux dispersal and, ultimately, our understanding of both global and local (turbulent) solar dynamos will be greatly improved. (Posted: June 7, 2011)
We observe that intergranular jets, originating in the intergranular space surrounding individual granules, tend to be associated with granular fragmentation, in particular, with the formation and evolution of a bright granular lane (BGL) within individual granules. This is a sequence of composite images made by combining TiO granulation data and dark Halpha-0.1nm absorption features. The arrow in the 45:49 frame points toward the BGL. The onset of chromospheric jet-like activity begins shortly after a bright grain develops (frames 46:09-46:59). The arrow in the 48:17 frame indicates an inverted "Y" jet occurring at approximately the same position as the BGL. The time stamp in each frame shows the minute and second of image acquisition starting from 17:00:00UT. Short tick marks separate 0.25Mm spatial intervals.
AR NOAA 11108 observed with the NST/TiO imager on Sept 20, 2011. This image was published by Ciel et Espace. (Posted: June 6, 2011)
AR NOAA 11109 observed with the NST/TiO imager on Sept 27, 2011. This image was published by Ciel et Espace. (Posted: June 6, 2011)
A 19" by 19" Hinode/SOT g-band (left) and NST TiO (right) image of the same area of the Sun acquired on Aug 3, 2010 . The NST image clearly displays several tight clusters of resolved BPs near the center of the FOV, which are seen in the Hinode image as single bright patches. Meanwhile, there are indications that such tight clusters of various size are located at roots of chromospheric up flow events. The spatial and temporal resolution of the data allows us to track these individual BPs during their lifetime. (Posted: June 6, 2011)
TiO granulation recorded on 03 August 2010. The field of view is about 28"x25". One tick mark measures 10 pixels long with one pixel = 0.075". ("-means 'arcsecond' which corresponds to 725km on the Sun)
(Posted: Sept: 7, 2010)
AR 1102 as seen through the TiO 706nm (left) and the off-bad Halpha (right) filters. Images were taken on Aug 30, 2010. The red contours in both images mark locations of the most intense bright points as measured from the TiO image. The data shows excellent correspondence between photospheric and Ha bright points, the latter being somewhat larger in size (Posted: 3 Sept, 2010)
Movie of AR 11089 observed on 22 July 2010.
(Posted: Sept: 3, 2010)
Image of AR NOAA 1084 taken on July 2, 2010 in TiO (706 nm) filter and with realtime correction for atmospheric distortion (adaptive optics). For perspective, the Earth is slightly smaller than the whole sunspot including the dark umbra and the daisy petal-like penumbra. The spot is surrounded by the Sun's ubiquitous granular field in which the small individual bright points in intergranular lanes are near the diffraction limit of the telescope. This image has been called the most precise image of the Sun's surface ever taken and was chosen by the editors of National Geographic as one of the top ten space images of 2010 . (Posted: 1 Sept, 2010)
Halpha off-band image of the same active region taken a day earlier reveals dynamics in the chromospheric layer overlying the surface region shown in the full sunspot image. One can see ~50km/s "jets" arising from the bright magnetic areas immediately outside the main body of the penumbra. (Posted: 1 Sept, 2010)
TiO 706nm image of AR 1102 taken on Aug 30, 2010. The image shows several pores and a small sunspot partially surrounded by a penumbra. (Posted: 1 Sept, 2010)

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