Results 81 to 90 of about 324,715 (248)
Sun-as-a-Star Observation of Flares in Lyman {\alpha} by the PROBA2/LYRA radiometer [PDF]
, 2012 There are very few reports of flare signatures in the solar irradiance at H i Lyman {\alpha} at 121.5 nm, i.e. the strongest line of the solar spectrum. The LYRA radiometer onboard PROBA2 has observed several flares for which unambiguous signatures have ...
Dammasch, I. E. +2 more
core +2 more sources
Identifying Typical Mg ii Flare Spectra Using Machine Learning [PDF]
Astrophysical Journal, 2018 The Interface Region Imaging Spectrograph (IRIS) performs solar observations over a large range of atmospheric heights, including the chromosphere where the majority of flare energy is dissipated.
Brandon Panos +6 more
semanticscholar +1 more source
Journal of Geophysical Research: Space Physics, 2019 The period of 6–11 September 2017 was an active period in which multiple solar flares and a major geomagnetic storm occurred. The two largest flares, an X9.3 and an X8.2, were a disk flare and a limb flare, respectively.
L. Qian +6 more
semanticscholar +1 more source
Dynamics and Kinematics of the EUV Wave Event on 6 May 2019
Galaxies, 2022 We present here the kinematics of the EUV wave associated with a GOES M1.0-class solar flare, which originates in NOAA AR 12740. The event is thoroughly observed with Atmospheric Imaging Assembly (AIA) onboard Solar Dynamics Observatory (SDO) with high ...
Ramesh Chandra +4 more
doaj +1 more source
New classification parameter of solar flares based on the maximum flux in soft X-rays and on duration of flare [PDF]
, 2018 Solar flare activity is characterised by different classification systems, both in optical and X-ray ranges. The most generally accepted classifications of solar flares describe important parameters of flares such as the maximum of brightness of the flare in the in optical range - $H_{\alpha}$ flare class (change from F to B), area of the flare in $H_{\
arxiv +1 more source
A Database of Flare Ribbon Properties from the Solar Dynamics Observatory. I. Reconnection Flux [PDF]
, 2017 We present a database of 3137 solar flare ribbon events corresponding to every flare of GOES class C1.0 and greater within 45° from the central meridian, from 2010 April until 2016 April, observed by the Solar Dynamics Observatory. For every event in the
M. Kazachenko +3 more
semanticscholar +1 more source
Sensors, 2023 Herein, we present new design principles for gain enhancement and cross-polarization suppression in dual-polarized cavity-backed antennas and demonstrate the capability in an octagonal cavity-backed open prism antenna (OCROP).
Yanxia Liu +2 more
doaj +1 more source
A Magnetic Bald-Patch Flare in Solar Active Region 11117 [PDF]
, 2017 With SDO observations and a data-constrained MHD model, we identify a confined multi-ribbon flare occurred on 2010 October 25 in solar active region 11117 as a magnetic bald patch (BP) flare with strong evidences. From the photospheric magnetic field observed by SDO/HMI, we find there is indeed magnetic BPs on the PILs which match parts of the flare ...
arxiv +1 more source
Horizontal flows concurrent with an X2.2 flare in active region NOAA 11158
, 2012 Horizontal proper motions were measured with local correlation tracking (LCT) techniques in active region NOAA 11158 on 2011 February 15 at a time when a major (X2.2) solar flare occurred.
Battaglia +34 more
core +1 more source
Automatic Flare Spot Artifact Detection and Removal in Photographs [PDF]
Journal of Mathematical Imaging and Vision, 2018 Flare spot is one type of flare artifact caused by a number of conditions, frequently provoked by one or more high-luminance sources within or close to the camera field of view.
Patricia Vitoria, C. Ballester
semanticscholar +1 more source