Results 121 to 130 of about 318,737 (373)
High-resolution observations of flare precursors in the low solar atmosphere [PDF]
Nature Astronomy, 2017 Solar flares are generally believed to be powered by free magnetic energy stored in the corona1, but the build up of coronal energy alone may be insufficient to trigger the flare to occur2.
Haimin Wang +11 more
semanticscholar +1 more source
GAMMA-RAY BURST FLARES: ULTRAVIOLET/OPTICAL FLARING. I. [PDF]
The Astrophysical Journal, 2013 We present a new algorithm for the detection of flares in gamma-ray burst (GRB) light curves and use this algorithm to detect flares in the UV/optical. The algorithm makes use of the Bayesian Information Criterion (BIC) to analyze the residuals of the fitted light curve, removing all major features, and to determine the statistically best fit to the ...
M. de Pasquale +4 more
openaire +4 more sources
Advanced Materials Interfaces, EarlyView.The structure formation mechanism of pure poly(styrene)‐b‐poly(4‐vinyl pyridine) (PS‐b‐P4VP) and hybrid PS‐b‐P4VP/FeCl₃ films during and after spray deposition is investigated. The morphological differences result from the interplay among the complexation between FeCl₃ and P4VP segments, the crystallization of the P4VP segment, and the surface ...
Shanshan Yin +14 more
wiley +1 more source
Gradual Solar Coronal Dimming and Evolution of Coronal Mass Ejection in the Early Phase
, 2017 We report observations of a two-stage coronal dimming in an eruptive event of a two-ribbon flare and a fast coronal mass ejection (CME). Weak gradual dimming persists for more than half an hour before the onset of the two-ribbon flare and the fast rise ...
Cheng, Jianxia, Qiu, Jiong
core +1 more source
The development of lower-atmosphere turbulence early in a solar flare [PDF]
Science Advances, 2018 IRIS observation of the initiation of a solar flare suggests that turbulence helps to heat the Sun’s lower atmosphere. We present the first observational study of the onset and evolution of solar flare turbulence in the lower solar atmosphere on an ...
N. Jeffrey +3 more
semanticscholar +1 more source
Vistas in Astronomy, 1974 When we look at a solar flare we observe at relatively close hand a sample of the most energetic phenomena in the universe. These dynamic eruptions can only truly be appreciated from time-lapse movies or spectra. They fill the interplanetary medium with cosmic rays and shock waves, and produce plasmas with temperatures of 50 million degrees.
openaire +2 more sources
An “A star” on an M star during a flare within a flare [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractM dwarfs produce explosive flare emission in the near-UV and optical continuum, and the mechanism responsible for this phenomenon is not well-understood. We present a near-UV/optical flare spectrum from the rise phase of a secondary flare, which occurred during the decay of a much larger flare.
John P. Wisniewski +4 more
openaire +4 more sources
Topological Berry Antenna on a Silicon Chip for Terahertz Wireless Communication
Advanced Photonics Research, EarlyView.The on‐chip topological Berry antenna for 6G to Xth‐generation wireless communication is designed via integrating various Berry curvatures for an enhanced antenna aperture and radiation gain. This THz antenna has demonstrated a maximum gain of 17 dBi and chip‐to‐chip wireless communications at 20 Gbps over a distance of 15 cm.
Sonu Kumar +8 more
wiley +1 more source
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2019 Flaring is a combustion process commonly used in the oil and gas industry to dispose flammable waste gases. Flare flameout occurs when these gases escape unburnt from the flare tip causing the discharge of flammable and/or toxic vapor clouds.
Sohag Kabir +2 more
semanticscholar +1 more source
Rapid Buildup of a Magnetic Flux Rope during a Confined X2.2 Class Flare in NOAA AR 12673 [PDF]
Astrophysical Journal, 2018 Magnetic flux ropes (MFRs) are believed to be the core structure in solar eruptions; nevertheless, their formation remains intensely debated. Here we report a rapid buildup process of an MFR system during a confined X2.2 class flare occurred on 2017 ...
Lijuan Liu +5 more
semanticscholar +1 more source