Magnetohydrodynamic (MHD) plasma turbulence is believed to play a vital role in the production of energetic electrons during solar flares and non-thermal broadening spectral lines key sign this turbulence. Here, we determine how flare evolves time space using profiles Fe xxiv, xxiii xvi, observed by Hinode/EIS. Maps velocity are created for times covering X-ray rise, peak, decay. For first time...

Radio observations of tidal disruption events (TDEs)—when a star is tidally disrupted by supermassive black hole (SMBH)—provide unique laboratory for studying outflows in the vicinity SMBHs and their connection to accretion onto hole. emission has been detected only handful TDEs so far. Here we report detection delayed radio flares from an optically discovered TDE. Our prompt TDE ASASSN-15oi sh...

Context. Lα is a strong chromospheric emission line, which has been relatively rarely observed in flares. The Transition Region and Coronal Explorer (TRACE) has a broad “Lyman α” channel centered at 1216 Å used primarily at the beginning of the mission. A small number of flares were observed in this channel. Aims. We aim to characterise the appearance and behaviour of a flare and filament eject...

Variable non-thermal radio emission from Galactic X-ray binaries is a trace of relativistic jets, created near accretion disks. The spectral characteristics of a lot of radio flares in the X-ray binaries with jets (RJXB) is discussed in this report. We carried out several long daily monitoring programs with the RATAN-600 radio telescope of the sources: SS433, Cyg X-3, LS I +61303, GRS 1915+10 a...

We calculate the timeand energy-dependent opacity of high-energy γ-rays attenuated by pairproduction interactions with accretion-flare photons that are scattered by gas and dust surrounding the nuclei of active galaxies. We show that the temporal behavior of the high-energy opacity cutoff can be used in conjunction with the time history of the accretion flare to determine the location of the γ-...

The authors present an interesting spatio-temporal analysis of 4-dim solar data, for a flaring event, the preflare phase, and a Quiet Sun region. They use a Singular Value Decomposition method and investigate the multi-scale behavior of the physical parameter of the temperature T, and attempt to extract information on the heat flow dT/dx in a flare. The description of the method is clear, and t...

The brightest giant flare from the soft γ-ray repeater (SGR) 1806-20 was detected on 2004 December 27. The isotropic-equivalent energy release of this burst is at least one order of magnitude more energetic than those of the two other SGR giant flares. Starting from about one week after the burst, a very bright (∼ 80 mJy), fading radio afterglow was detected. Follow-up observations revealed the...