The vasomotor axon reflex can be evoked in peripheral epidermal nociceptive C-fibers to induce local vasodilation. This neurogenic flare response is a measure of C-fiber functional integrity and therefore shows impairment in patients with small fiber neuropathy. Laser Doppler flowmetry (LDF) and laser Doppler imaging (LDI) are both techniques to analyze vasomotor small fiber function by quantif...

This paper presents a study of the influence of solar activity on the earth's temperature. In particular, we focus on the repercussion of the fluctuations of the solar irradiance on the temperature of the Northern and Southern hemispheres as well as on land and ocean regions. While solar irradiance data are not directly analyzed, we make use of a published solar irradiance reconstruction for lo...

We present a model for the short timescale spectral variability of accreting black holes. It describes well the time-averaged spectra as well as temporal characteristics such as powerdensity spectrum, time/phase lags, and coherence function of Cygnus X-1. We assume that X/γ-rays are produced in compact magnetic flares at radii <∼ 100GM/c from the central black hole. The tendency for magnetic lo...

Solar flare prediction has become a forefront topic in contemporary solar physics, with numerous published methods relying on numerous predictive parameters, that can even be divided into parameter classes. Attempting further insight, we focus on two popular classes of flare-predictive parameters, namely multiscale (i.e., fractal and multifractal) and proxy (i.e., morphological) parameters, and...

We analyze optical spectra of a two-ribbon, long duration C1.1 flare that occurred on 18 Aug 2011 within AR 11271 (SOL2011-08-18T15:15). The impulsive phase of the flare was observed with a comprehensive set of space-borne and ground-based instruments, which provide a range of unique diagnostics of the lower flaring atmosphere. Here we report the detection of enhanced continuum emission, observ...

A challenge to standard leptonic SSC models are so-called orphan TeV flares, i.e. enhanced very high energy (VHE) gamma-ray emission without any contem-poraneous X-ray flaring activity, that have recently been observed in TeV-blazars (e.g., 1ES 1959+650). In order to explain the orphan TeV flare of 1ES 1959+650 observed in June 2002, the co-called hadronic synchrotron mirror model has been deve...

Active region (AR) 12673 produced many M-class and several X-class flares, one of which being an X9.3 flare, is recorded as the largest solar flare in cycle 24. We studied evolution three-dimensional flare-productive magnetic field within AR 12673, using a time series nonlinear force-free extrapolations every 12 hours from September 4th 00:00 UT to 6th UT. Our analysis found that three flux rop...

Context. Previously detected in only a few gamma-ray bursts (GRBs), X-ray flares are now observed in ∼ 50% of Swift GRBs, though their origins remain unclear. Most flares are seen early on in the afterglow decay, while some bursts exhibit flares at late times of 104 to 105 seconds, which may have implications for flare models. Aims. We investigate whether a sample of late time (& 1 × 104 s) fla...

We report spatially resolved observations of a solar flare, obtained in a wide range of wavelengths including soft and hard X-rays, decimeter-meter and millimeter radio emissions. This unique combination of data (including the simultaneous fast localization of emission at millimeter wavelengths) allows us to conclude that, even if the 1992 October 28 flare is a moderate one in terms of the amou...

Past hydrodynamic simulations have been able to reproduce the high temperatures and densities characteristic of solar flares. These simulations, however, have not been able to account for the slow decay of the observed flare emission or the absence of blueshifts in high spectral resolution line profiles. Recent work has suggested that modeling a flare as an sequence of independently heated thre...