Results 61 to 70 of about 6,507,263 (232)

A Machine Learning Approach for Identifying Coronal Mass Ejection–associated Stellar Flares in TESS Observations

The Astrophysical Journal Supplement Series
Coronal mass ejections (CMEs) are major drivers of stellar space weather and can strongly influence the habitability of exoplanets. However, compared to the frequent occurrence of white-light flares, confirmed stellar CMEs remain extremely rare.
Yu Shi, Hong-Peng Lu, Li-Yun Zhang, Tian-Hao Su, Chao Tan   +4 more
doaj   +1 more source

Exploring the Potential of Cluster Analysis in Identifying Disease Phenotypes in Calcium Pyrophosphate Deposition: Moving From Intuition to Insight

Arthritis &Rheumatology, EarlyView.
Objective Calcium pyrophosphate deposition (CPPD) disease is a heterogeneous condition and is frequently misdiagnosed due to the different clinical presentations and variable disease progression. Aim of this study is to identify clinical phenotypes of CPPD disease by integrating real‐world data from two data sets. Methods Data from the COLCHICORT trial
Greta Pellegrino, Laurène Norberciak, Silvia Sirotti, Abhishek Abhishek, Mariano Andrès, Edoardo Cipolletta, Julien Damart, Renaud Desbarbieux, Pilar Diez, Vincent Ducoulombier, Hang‐Korng Ea, Emilio Filippucci, Charlotte Jauffret, Augustin Latourte, Jean‐Guillaume Letarouilly, Sébastien Ottaviani, Laura Pezzoni, Pascal Richette, Pierre Robinet, Georgios Filippou, Tristan Pascart   +20 more
wiley   +1 more source

X-ray flares from Sgr A * : Star-disk interactions?

, 2003
Sgr A*, the putative black hole in our Galactic Center (GC), is extraordinary dim in all frequencies. Apparently the black hole is unable to accrete at the Bondi accretion rate for some reason.
Sunyaev, R., J. Cuadra (7212728), S. Nayakshin (7603412), Nayakshin, S., Cuadra, J., J. Cuadra, S. Nayakshin, R. Sunyaev, R. Sunyaev (7603820)   +8 more
core   +1 more source

The solar-stellar connection - The relationship between flaring rates, flare power, and quiescent X-ray background

The Astrophysical Journal, 1988
Des correlations entre les diverses proprietes relatives a l'eruption stellaire sont obtenues pour les naines rouges. L'influence de ces correlations sur le processus eruptif et le chauffage coronal est etudiee. De telles relations sont aussi recherchees pour le Soleil mais elles ne sont pas toujours analogues a celles obtenues pour les naines ...
Richard A. Harrison, Gillian Pearce, Andrew Skumanich   +2 more
openaire   +1 more source

Statistics of Solar White-light Flares. I. Optimization and Application of Identification Methods

The Astrophysical Journal
White-light flares (WLFs) are energetic activity in the stellar atmosphere. However, observed solar WLFs are relatively rare compared to stellar WLFs or solar flares observed at other wavelengths, which limits our further understanding of solar/stellar ...
Yingjie Cai, Yijun Hou, Ting Li, Jifeng Liu   +3 more
doaj   +1 more source

The Bochum Survey of the Southern Galactic Disk: IV. Multi‐Band Photometry

Astronomische Nachrichten, EarlyView.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°‐wide stripe in the southern galactic disk from September 2010 to September 2019. These fields were observed between 21 and 407 times sim r′$$ {r}^{\prime } $$ultaneously in (8mag≲r′≲18mag$$ 8\kern0.6em \mathrm{mag}\lesssim {r}^{\prime}\lesssim 18\kern0.6em ...
Julia Blex, Dominik J. Bomans, Kerstin Weis, Markus Demleitner, Moritz Hackstein, Anna Franckowiak, Michael Ramolla, Christian Westhues, Christofer Fein, Rolf Chini   +9 more
wiley   +1 more source

Particle acceleration in the presence of weak turbulence at an X-type neutral point [PDF]

, 2012
We simulate the likely noisy situation near a reconnection region by superposing many 2D linear reconnection eigenmodes. The superposition of modes on the steady state X-type magnetic field creates multiple X- and O-type neutral points close to the ...
Petkaki, P., MacKinnon, A.L., Burge, C. A., MacKinnon, A. L., Burge, C.A.   +4 more
core   +1 more source

The frequency of stellar X-ray flares from a large-scale XMM-Newton sample [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe present estimates of cool-star X-ray flare rates determined from the XMM-Tycho survey (Pyeet al. 2015, A&A, 581, A28), and compare them with previously published values for the Sun and for other stellar EUV and white-light samples. We demonstrate the importance of applying appropriate corrections, especially in regard to the total ...
John P. Pye, Simon R. Rosen
openaire   +1 more source

Senotherapeutics for Knee Osteoarthritis

Medicinal Research Reviews, EarlyView.
ABSTRACT Osteoarthritis (OA) is a chronic disease that imposes a significant economic burden and deteriorates quality of life. Nevertheless, current therapeutic options for OA are limited to symptomatic remedies. As such, there is a high interest in novel methods for treating or preventing OA.
Ezgi Duman, Girish Pattappa, Patrick Pann, Stephan Reppenhagen, Maximilian Rudert, Peter Angele, Denitsa Docheva   +6 more
wiley   +1 more source

A correlation between Balmer and soft X-ray emission from stellar and solar flares [PDF]

International Astronomical Union Colloquium, 1989
SummarySimultaneous optical spectroscopy and X-ray monitoring of stellar and solar flares shows that a well-defined linear correlation exists between the integrated Hγ and soft X-ray flux that extends over four orders of magnitude. The existence of this relationship implies a direct proportionality between the emission from the cooler and denser ...
C.J. Butler, M. Rodono, B.H. Foing
openaire   +1 more source