Results 71 to 80 of about 22,322 (295)
Radio and Optical Flares on the dMe Flare Star EV Lac
The Astrophysical JournalWe present the results of a coordinated campaign to observe radio and optical stellar flares from the nearby M dwarf flare star EV Lac. From a total of 27 hr of radio and 29 hr of optical observations, we examine the correspondence of the action of ...
Rachel A. Osten +6 more
doaj +1 more source
The Astrophysical Journal, 2023 We often find spectral signatures of chromospheric cold plasma ejections accompanied by flares in a wide range of spatial scales in the solar and stellar atmospheres.
Yuji Kotani +6 more
doaj +1 more source
Coronal activity with XMM-Newton and Chandra
, 2008 XMM-Newton and Chandra have greatly deepened our knowledge of stellar coronae giving access to a variety of new diagnostics such that nowadays a review of stellar X-ray astronomy necessarily must focus on a few selected topics.
B. Stelzer, Eric Stempels
core +1 more source
On the gamma-activity of stellar flares [PDF]
Symposium - International Astronomical Union, 1990 The principal possibility of γ-ray manifestation of stellar flares in the framework of pinch-model is shown. Validity of assumption that, γ-bursts are connected with magnetically active dwarfs (MAD) is discussed.
H. A. Harutyunian, V. S. Hayrapetyan
openaire +1 more source
Trajectories of Physical Function in Canadian Children with Juvenile Idiopathic Arthritis
Arthritis Care &Research, Accepted Article.Objectives We describe trajectories of physical function in children newly diagnosed with juvenile idiopathic arthritis (JIA) and identify trajectories with persisting functional impairments and associated baseline characteristics. Methods We included patients enrolled in the Canadian Alliance of Pediatric Rheumatology Investigators (CAPRI) Registry ...
Clare Cunningham +14 more
wiley +1 more source
The Astrophysical Journal LettersPostflare loops are loop-like plasmas observed during the decay phase of solar flares, and they are expected to exist for stellar flares. However, it is unclear how postflare loops are observed in stellar flares’ cases.
Takato Otsu +3 more
doaj +1 more source
Multichannel spectrophotometry of stellar flares
The Astrophysical Journal, 1980 Stellar flares have been observed using the 32 channel spectrophotometer on the 5 m telescope. Net flare fluxes in the region 3200-7000 A are presented. A simple model of blackbody radiation and hydrogen recombination emission appears to fit the continuum points well.
S. W. Mochnacki, H. Zirin
openaire +1 more source
Arthritis Care &Research, EarlyView.People with systemic autoimmune and rheumatic diseases (SARDs) are at higher risk than the general population of experiencing adverse pregnancy and perinatal outcomes such as preeclampsia, intrauterine growth restriction, and maternal and/or fetal death.
Mehret Birru Talabi, Sonya Borrero
wiley +1 more source
Self-organized Criticality across 13 Orders of Magnitude in the Solar–Stellar Connection
The Astrophysical JournalThe observed size distributions of solar and stellar flares are found to be consistent with the predictions of the fractal-diffusive self-organized criticality (FD-SOC) model, which predicts power-law slopes with universal constants of α _F = (9/5) = 1 ...
Markus J. Aschwanden +1 more
doaj +1 more source
Polarimetry of stellar active regions and flares [PDF]
Solar Physics, 1989 AbstractObservations of regular and irregular polarimetric variability in late-type stars are reviewed, and the related physical and geometrical effects are discussed. There are indications that the irregular part of the variability could be caused by transient events, possibly associated with flares.
I. Tuominen +4 more
openaire +1 more source