Topic
Solar eclipse
About: Solar eclipse is a research topic. Over the lifetime, 2737 publications have been published within this topic receiving 22625 citations.
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TL;DR: In a time series of white-light images of the corona spanning 70 minutes taken with multi-site observations of this eclipse, six jets were found as narrow structures upwardly ejected with an apparent speed of about 450 km s−1 in polar plumes as discussed by the authors.
Abstract: Coronal jets, which extend from the solar surface to beyond 2 R ⊙, were observed in the polar coronal hole regions during the total solar eclipse on 2017 August 21. In a time-series of white-light images of the corona spanning 70 minutes taken with our multi-site observations of this eclipse, six jets were found as narrow structures upwardly ejected with an apparent speed of about 450 km s−1 in polar plumes. On the other hand, extreme-ultraviolet (EUV) images taken with the Atmospheric Image Assembly of the Solar Dynamics Observatory show that all of the eclipse jets were preceded by EUV jets. Conversely, all the EUV jets whose brightnesses are comparable to ordinary soft X-ray jets and that occurred in the polar regions near the eclipse period, were observed as eclipse jets. These results suggest that ordinary polar jets generally reach high altitudes and escape from the Sun as part of the solar wind.
15 citations
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01 Jan 2017
Abstract: The 18 August 1868 total solar eclipse was a watershed event in the history of solar physics, and a notable event in the history of Thai astronomy. This was the first solar eclipse subjected to detailed spectroscopic scrutiny, and the first solar eclipse investigated scientifically by Thai and Western scholars since King Narai and French Jesuit missionary-astronomers observed the partial solar eclipse of 30 April 1688 from Lop Buri.
15 citations
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TL;DR: In this paper, the authors investigated the ionospheric total electron content response to the September-2017 geomagnetic storm and December-2019 annular solar eclipse from global navigation satellite system derived total electron observations over the Sri Lankan equatorial and low latitude region.
15 citations
01 Jan 2010
TL;DR: In this paper, three programs of physics observations were independently conducted by teams in Kiev, Ukraine, and Suceava, Romania, separated by about 440 km. All three teams detected unexplained disturbances, and these disturbances were mutually correlated.
Abstract: During the solar eclipse of 1 August 2008 three programs of physics observations were independently conducted by teams in Kiev, Ukraine, and Suceava, Romania, separated by about 440 km. The Ukraine team operated five independent miniature torsion balances, one Romania team operated two independent short ball-borne pendulums, and the other Romania team operated a long Foucault-type pendulum. All three teams detected unexplained disturbances, and these disturbances were mutually correlated. The overall pattern of the observations exhibits certain perplexing features.
15 citations
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TL;DR: In this paper, the first observations of solar eclipse induced mid-latitude plasma irregularities using the middle and upper atmosphere radar (MU radar) at Shigaraki (34.85°N,136.1°E, 25.0°N geomagnetic) were presented.
Abstract: [1] The first observations of solar eclipse induced mid-latitude plasma irregularities using the middle and upper atmosphere radar (MU radar) at Shigaraki (34.85°N,136.1°E, 25.0°N geomagnetic) are presented. The observations were done during the partial solar eclipse on 22 July, 2009. The observations show that the sudden withdrawal of solar radiation could deplete the background E-region densities, thereby unmasking the long-lived metallic ions within the strong and patchy Sporadic E-layers. As a result of this, Quasi-Periodic (QP) echoes were generated, which were detected by the MU radar. These echoes resemble the normal post-sunset QP echoes observed over mid-latitudes as revealed by the multi-channel interfereometry imaging. This example shows that over mid-latitudes E-region plasma irregularities can be generated during a partial solar eclipse, revealing a hitherto unobserved aspect of mid-latitude ionospheric responses to eclipses.
15 citations