Results 21 to 30 of about 104,518 (171)

Magnetic fields and UHECR propagation [PDF]

EPJ Web of Conferences, 2023
I review the main observational tools used to detect and measure magnetic fields in the interstellar medium of our Galaxy (considering both the Galactic disk and the Galactic halo), in the interstellar medium of external galaxies, and in the ...
Ferrière Katia
doaj   +1 more source

Supersonic turbulence and structure of interstellar molecular clouds [PDF]

, 2002
The interstellar medium (ISM) provides a unique laboratory for highly supersonic, driven hydrodynamics turbulence. We present a theory of such turbulence, confirm it by numerical simulations, and use the results to explain observational properties of ...
B. Dubrulle, B. G. Elmegreen, B. G. Elmegreen, D. Chappell, D. H. Porter, D. Porter, E. A. Novikov, E. C. Ostriker, E. Falgarone, E. Falgarone, H. Politano, J. Cho, M. A. de Avillez, M. J. Korpi, P. Padoan, Paolo Padoan, R. B. Larson, R. B. Larson, R. Benzi, R. Benzi, R. Camussi, R. Grauer, S. Boldyrev, Stanislav Boldyrev, U. Frisch, W.-C. Müller, Z.-S. She, Z.-S. She, Åke Nordlund   +28 more
core   +2 more sources

Variability of GRB Afterglows Due to Interstellar Turbulence [PDF]

, 1999
Gamma-Ray Burst (GRB) afterglows are commonly interpreted as synchrotron emission from a relativistic blast wave produced by a point explosion in an ambient medium, plausibly the interstellar medium of galaxies.
Abraham Loeb, Davis R. J., Wijers R. A. M. J., Xiaohu Wang   +3 more
core   +2 more sources

Search for thermonuclear burst oscillations in the Swift/BAT data set

Frontiers in Astronomy and Space Sciences
This study comprehensively analyzes type I X-ray bursts observed by Swift/BAT from 2005 to April 2024 to search for X-ray burst oscillations (XBOs) in neutron star low-mass X-ray binaries.
Qing-Xin Li, Qing-Xin Li, Zhaosheng Li, Yuan-Yue Pan, Maurizio Falanga, Maurizio Falanga   +5 more
doaj   +1 more source

STELLA—Potential European contributions to a NASA-led interstellar probe

Frontiers in Astronomy and Space Sciences, 2022
The discovery of a myriad of exoplanets in the past decades has revolutionized the understanding of our place in the Universe. How different are exoplants and do some of them harbor life, just like Earth? To do so, their parent stars must drive a stellar
Robert F. Wimmer-Schweingruber, Nicolas André, Stanislav Barabash, Pontus C. Brandt, Timothy S. Horbury, Luciano Iess, Benoit Lavraud, Ralph L. McNutt, Elena A. Provornikova, Eric Quémerais, Robert Wicks, Martin Wieser, Peter Wurz   +12 more
doaj   +1 more source

ISM Simulations: An Overview of Models [PDF]

, 2012
Until recently the dynamical evolution of the interstellar medium (ISM) was simulated using collisional ionization equilibrium (CIE) conditions. However, the ISM is a dynamical system, in which the plasma is naturally driven out of equilibrium due to ...
Asgekar, A., Breitschwerdt, D., de Avillez, M. A., Spitoni, E.   +3 more
core   +2 more sources

Discovery of a Long Thermonuclear X-Ray Burst from the Ultracompact Binary 4U 1850–087

The Astrophysical Journal
We report the detection of a long X-ray burst from the ultracompact binary 4U 1850–087. The type I X-ray burst was observed on MJD 60171.65 by the Monitor of All-sky X-ray Image and Neutron Star Interior Composition Explorer (NICER). We analyze the NICER
Yongqi Lu, Zhaosheng Li, Wenhui Yu, Yuanyue Pan, Maurizio Falanga   +4 more
doaj   +1 more source

Homoleptic Bismuth Alkynes: Isolable Reagents for Selective Alkynyl Radical Transfer

Angewandte Chemie International Edition, EarlyView.
The first series of fully characterized homoleptic alkynyl bismuth compounds Bi(C≡CR)3 is presented. Facile homolytic Bi–C bond cleavage grants access to alkynyl radicals, which have been employed in selective C–X bond formation (X = C, B, Se, Te). This complements existing strategies for alkynyl radical generation as it proceeds under mild and purely ...
Gargi Kundu, Felix Debbeler, Sascha Reith, Frerik Wurm, Alicia Casitas, Crispin Lichtenberg   +5 more
wiley   +1 more source

OO Leo: An Active Contact Binary with Possible Solar-like Differential Rotation

The Astrophysical Journal
With Transiting Exoplanet Survey Satellite (TESS) high-precision photometry and Large Sky Area Multi-object Fiber Spectroscopic Telescope medium-resolution spectra, we present the first light and radial velocity curve analyses for the eclipsing binary OO
Zi-Bin Meng, Pei-Ru Wu, Yun-Xia Yu, Ke Hu, Fu-Yuan Xiang   +4 more
doaj   +1 more source

Astrophysical Fractals: Interstellar Medium and Galaxies

, 1999
The interstellar medium is structured as a hierachy of gas clouds, that looks self-similar over 6 orders of magnitude in scales and 9 in masses. This is one of the more extended fractal in the Universe.
Combes, F.
core   +2 more sources