Results 41 to 50 of about 6,507,263 (232)

The Giant Flares of the Microquasar Cygnus X-3: X-Rays States and Jets

Galaxies, 2017
We report on two giant radio flares of the X-ray binary microquasar Cyg X-3, consisting of a Wolf–Rayet star and probably a black hole. The first flare occurred on 13 September 2016, 2000 days after a previous giant flare in February 2011, as the RATAN ...
Sergei Trushkin, Michael McCollough, Nikolaj Nizhelskij, Peter Tsybulev   +3 more
doaj   +1 more source

Flare X-Ray Observations of AB Doradus: Evidence of Stellar Coronal Opacity

The Astrophysical Journal, 2005
13 pages, 3 figures, to be published in ApJ ...
Matranga, M., Mathioudakis, Michail, Kay, H.R.M., Keenan, Francis   +3 more
openaire   +3 more sources

X-ray flares from postmerger millisecond pulsars

, 2006
Recent observations support the suggestion that short-duration gamma-ray bursts are produced by compact star mergers. The x-ray flares discovered in two short gamma-ray bursts last much longer than the previously proposed postmerger energy-release time ...
Wang, X. Y., Dai, Z. G., Wu, X. F., Zhang, B.   +3 more
core   +1 more source

High‐Efficiency InGaP‐on‐Insulator Microresonator Nonlinear Conversion and Entanglement Generation

Advanced Science, EarlyView.
Sulfur treatment of InGaP‐on‐Insulator (InGaP‐OI) significantly reduces surface roughness, passivates surface states, and lowers propagation loss at visible wavelengths, enabling efficient nonlinear frequency conversion and photon‐pair generation.
Xuefeng Li, Lillian Thiel, Yiming Pang, Amalu Shimamura, Lucas Wang, Joshua E. Castro, Max Meunier, Nicholas Lewis, John E. Bowers, Kevin L. Silverman, Richard P. Mirin, Galan Moody   +11 more
wiley   +1 more source

Simbol-X capability of detecting the non-thermal emission of stellar flares [PDF]

, 2008
We investigate the capability of detecting, with Simbol-X, non-thermal emission during stellar flares, and distinguishing it from hot thermal emission. We find that flare non-thermal emission is detectable when at least ̃20 cts are detected with the CZT
Maggio, A., Micela, G., ARGIROFFI, Costanza   +2 more
core  

A survey of stellar X-ray flares from the

, 2015
Context. The X-ray emission from flares on cool (i.e. spectral-type F–M) stars is indicative of very energetic, transient phenomena, associated with energy release via magnetic reconnection. Aims. We present a uniform, large-scale survey of X-ray
John P. Pye (7590500), D. Fyfe (7669421), A. C. Schröder, S. Rosen (7601321), D. Fyfe, A. C. Schroeder (7782329), A. C. Schröder (7622042), J. P. Pye, S. Rosen, John. P. Pye (7669418)   +9 more
core   +1 more source

The effect of X-ray and accretion variability on mid-infrared lines in the young disk-bearing binary DQ Tau

Astronomy & Astrophysics
Context. A star’s radiation field is the main energy source of a planet-forming disk. Stellar photons – from X-rays to optical – are reprocessed in the inner protoplanetary disk, and this process enables mid-infrared (mid-IR) diagnostics of the disk’s ...
Portilla-Revelo Bayron, Getman Konstantin V., Kóspál Ágnes, Semenov Dmitry, Akimkin Vitaly, Zwicky Lis, Forbrich Jan, van Terwisga Sierk   +7 more
doaj   +1 more source

Advancing Biotherapeutic Treatment of Ulcerative Colitis Using Lipid Mesophases: Formulation Design and Preclinical Validation

Advanced Science, EarlyView.
Lipid mesophases provide a versatile platform for colon‐targeted delivery of biotherapeutics, protecting them from degradation while enhancing mucoadhesion and enabling localized, controlled release to the inflamed mucosa after oral or rectal administration. In a DSS‐induced colitis model, this strategy reduced disease activity, inflammatory biomarkers,
Rafaela Gazzi, Tiziana Cremona, Reto Czekalla, Emily Campbell, Marlene Schwarzfischer, Doris Pöhlmann, Vanessa Dobernig, Gerhard Rogler, Michael Scharl, Alessandra Bergadano, Raffaele Mezzenga, Martin Kuentz, Paola Luciani, Simone Aleandri   +13 more
wiley   +1 more source

Flares on active M-type stars observed with XMM-Newton and Chandra. [PDF]

, 2007
M-type red dwarfs are among the most active stars. Their light curves display random variability of rapid increase and gradual decrease in emission.
Kraev, U.M., Mitra Kraev, Urmila
core  

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

, 2004
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. Another mystery of Sgr A * is the recently discovered large
J. Cuadra (7212728), S. Nayakshin (7603412), R. Sunyaev (7603820)   +2 more
core   +2 more sources