Results 1 to 10 of about 5,828,779 (146)
Superstrong Magnetic Fields in Sunspot Bipolar Light Bridges [PDF]
Astrophysical Journal LettersRecent solar observations of bipolar light bridges (BLBs) in sunspots have, in a few individual cases, revealed magnetic fields up to 8.2 kG, which is at least twice as strong as typical values measured in sunspot umbrae.
J. S. Castellanos Durán +4 more
exaly +5 more sources
A new dynamo pattern revealed by the tilt angle of bipolar sunspot groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 We obtain the latitude-time distribution of the averaged tilt angle of solar bipoles. For large bipoles, which are mainly bipolar sunspot groups, the spatially averaged tilt angle is positive in the Northern solar hemisphere and negative in the Southern,
Valery Pipin +2 more
exaly +6 more sources
Sunspot group tilt angle measurements from historical observations [PDF]
Advances in Space Research, 2016 Sunspot positions from various historical sets of solar drawings are analyzed with respect to the tilt angles of bipolar sunspot groups. Data by Scheiner, Hevelius, Staudacher, Zucconi, Schwabe, and Sporer deliver a series of average tilt angles spanning
Carsten Denker, Andrea Diercke, R Arlt
exaly +3 more sources
Backtracking Bipolar Magnetic Regions to Their Emergence: Two Groups and Their Implication in the Tilt Measurements [PDF]
The Astrophysical JournalBipolar magnetic regions (BMRs) that appear on the solar photosphere are surface manifestations of the Sun’s internal magnetic field. With modern observations and continuous data streams, the study of BMRs has moved from manual sunspot catalogs to ...
Anu Sreedevi +4 more
doaj +2 more sources
RE-EXAMINING SUNSPOT TILT ANGLE TO INCLUDE ANTI-HALE STATISTICS [PDF]
, 2014 Sunspot groups and bipolar magnetic regions (BMRs) serve as an observational diagnostic of the solar cycle. We use Debrecen Photohelographic Data (DPD) from 1974–2014 that determined sunspot tilt angles from daily white light observations, and data ...
B. H. McClintock, A. Norton, Jing Li
semanticscholar +3 more sources
TILT ANGLE AND FOOTPOINT SEPARATION OF SMALL AND LARGE BIPOLAR SUNSPOT REGIONS OBSERVED WITH HMI [PDF]
Astrophysical Journal, 2016 We investigate bipolar sunspot regions and how tilt angle and footpoint separation vary during emergence and decay. The Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory collects data at a higher cadence than historical records and ...
B. H. McClintock, A. Norton
exaly +2 more sources
Sunspot areas and tilt angles for solar cycles 7-10 [PDF]
, 2015 Extending the knowledge about the properties of solar cycles into the past is essential for understanding the solar dynamo. This paper aims at estimating areas of sunspots observed by Schwabe in 1825-1867 and at calculating the tilt angles of sunspot ...
V. S. Pavai +4 more
semanticscholar +2 more sources
DISTRIBUTION OF MAGNETIC FIELD IN BIPOLAR SUNSPOT GROUPS
Proceedings of the 23rd All-Russia Conference on Solar and Solar-Terrestrial Physics, 2019 I. Zhivanovich, A. Solov'ev
semanticscholar +2 more sources
Dependence of North–South Difference in the Slope of Joy’s Law on the Amplitude of Solar Cycle [PDF]
Solar Physics, 2023 Study of the tilt angles of solar bipolar magnetic regions is important because the tilt angles have an important role in the solar dynamo. We analyzed the data on tilt angles of sunspot groups measured at the Mt.
J. Javaraiah
semanticscholar +1 more source