نتایج جستجو برای: flare
تعداد نتایج: 8240 فیلتر نتایج به سال:
We report the possible detection of a Li i λ6708 Å line enhancement during an unusual long-duration optical flare in the recently discovered, X-ray/EUV selected, chromospherically active binary 2RE J0743+224. The Li i equivalent width (EW) variations follow the temporal evolution of the flare and large changes are observed in the intensity of the line. The maximum Li i enhancement (40% in EW) o...
A laser flare-cell meter was used to examine blood-aqueous barrier function in a 21-year-old male patient who had typical retinitis punctata albescens with white dots scattered throughout large areas of the fundus in both eyes. Fluorescein angiography showed multiple areas of hyperfluorescence over dot lesions and window defects. Electroretinogram demonstrated subnormal amplitude and electroocu...
We report the possible detection of a Li i λ6708 Å line enhancement during an unusual long-duration optical flare in the recently discovered, X-ray/EUV selected, chromospherically active binary 2RE J0743+224. The Li i equivalent width (EW) variations follow the temporal evolution of the flare and large changes are observed in the intensity of the line. The maximum Li i enhancement (40% in EW) o...
Recently, the MAGIC collaboration reported evidence for a delay in the arrival times of photons of different energies during a γ-ray flare from the blazar Markarian 501 on 2005 July 9. We describe the observed delayed high-energy emission by applying a homogeneous synchrotron self-Compton (SSC) model under the assumption that the blob containing relativistic electrons was observed in its accele...
Of the many episodic variations associated with the active Sun, perhaps the solar flare is the most spectacular and enigmatic. Because flares emit photons that reach our atmosphere in about 8 minutes, with no intervening heliospheric or magneto spheric interactions, flare effects upon the geospace system have been a somewhat neglected component in Space Weather research. Once flare photons pass...
I report on the X-ray detection of Gl 569 Bab. During a 25 ksec Chandra observation the binary brown dwarf is for the first time spatially separated in X-rays from the flare star primary Gl 569 A. Companionship to Gl 569 A constrains the age of the brown dwarf pair to 300 − 800 Myr. The observation presented here is only the second X-ray detection of an evolved brown dwarf. About half of the ob...
Results The study population included 18 (13%) extended oligoarticular, 17 (12%) RF+ Poly and 102 (75%) RFPoly JIA patients. At enrollment, age (mean/median/range) was 11.3/11.6/3.4-20.1 yrs; disease duration was 5.0/4.1/0.618.6 yrs; 103 (75%) were females and 64 (47%) were ANA +. Duration of CID at baseline was 1.2/0.5/1 day-12.1 yrs. Anti-TNF was etanercept in 106 (77%), 25 (18%) adalimumab a...
The solar irradiance in the Extreme Ultraviolet (EUV) spectral bands has been observed with a 15 s cadence by the SOHO Solar EUV Monitor (SEM) since 1995. During remarkably intense solar flares the SEM EUV measurements are saturated in the central (zero) order channel (0.1 – 50.0 nm) by the flare soft X-ray and EUV flux. The first order EUV channel (26 – 34 nm) is not saturated by the flare flu...
PURPOSE To evaluate the effects of the alpha(2)-adrenergic agonists (clonidine, apraclonidine, and guanfacine) on lipopolysaccharide (LPS)-induced aqueous flare elevation in pigmented rabbits. METHODS Anterior uveitis was induced with an intravenous injection of LPS (0.5 microg/kg) in an ear vein. The reproducibility of experimental uveitis induced by LPS (0.5 microg/kg) was also determined. ...
OBJECTIVE Axon reflex-mediated neurogenic vasodilatation in response to cutaneous heating may reflect early, pre-clinical small fibre dysfunction. We aimed to evaluate the distribution of the vascular flare area measured by laser doppler imaging ("LDI(FLARE) area") in type 1 diabetes and in healthy volunteers. RESEARCH AND METHODS Concurrent with clinical and electrophysiological examination ...
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