Zobrazeno 1 - 10
of 776
pro vyhledávání: '"Beattie, A. R."'
Autor:
Beattie, James R., Federrath, Christoph, Klessen, Ralf S., Cielo, Salvatore, Bhattacharjee, Amitava
Supersonic magnetohydrodynamic (MHD) turbulence is a ubiquitous state for many astrophysical plasmas. However, even the basic statistics for this type of turbulence remains uncertain. We present results from supersonic MHD turbulence simulations at u
Externí odkaz:
http://arxiv.org/abs/2405.16626
Autor:
Beattie, James R., Federrath, Christoph, Kriel, Neco, Hew, Justin Kin Jun, Bhattacharjee, Amitava
Many polyatomic astrophysical plasmas are compressible and out of chemical and thermal equilibrium, and yet, due to Stokes' hypothesis, a means to carefully control the decay of compressible modes in these systems has largely been neglected. This is
Externí odkaz:
http://arxiv.org/abs/2312.03984
Many astrophysical small-scale dynamos (SSDs) amplify weak magnetic fields via highly compressible, supersonic turbulence, but established SSD theories have overlooked these compressible effects. To address this, we perform visco-resistive SSD simula
Externí odkaz:
http://arxiv.org/abs/2310.17036
Availability, outage, and capacity of spatially correlated, Australasian free-space optical networks
Autor:
Birch, Marcus, Beattie, James R., Bennet, Francis, Rattenbury, Nicholas, Copeland, Michael, Travouillon, Tony, Ferguson, Kate, Cater, John, Sayat, Mikhael
Network capacity and reliability for free space optical communication (FSOC) is strongly driven by ground station availability, dominated by local cloud cover causing an outage, and how availability relations between stations produce network diversit
Externí odkaz:
http://arxiv.org/abs/2211.09248
The turbulent small-scale dynamo (SSD) is likely to be responsible for the magnetisation of the interstellar medium (ISM) that we observe in the Universe today. The SSD efficiently converts kinetic energy $E_{\rm kin}$ into magnetic energy $E_{\rm ma
Externí odkaz:
http://arxiv.org/abs/2209.10749
Autor:
Schneider, N., Ossenkopf-Okada, V., Clarke, S., Klessen, R. S., Kabanovic, S., Veltchev, T., Bontemps, S., Dib, S., Csengeri, T., Federrath, C., Di Francesco, J., Motte, F., Andre, Ph., Arzoumanian, D., Beattie, J. R., Bonne, L., Didelon, P., Elia, D., Koenyves, V., Kritsuk, A., Ladjelate, B., Myers, Ph., Pezzuto, S., Robitaille, J. F., Roy, A., Seifried, D., Simon, R., Soler, J., Ward-Thompson, D.
Publikováno v:
A&A 666, A165 (2022)
We present N-PDFs of 29 Galactic regions obtained from Herschel imaging at high angular resolution, covering diffuse and quiescent clouds, and those showing low-, intermediate-, and high-mass star formation (SF), and characterize the cloud structure
Externí odkaz:
http://arxiv.org/abs/2207.14604
Autor:
Sampson, Matt L., Beattie, James R., Krumholz, Mark R., Crocker, Roland M., Federrath, Christoph, Seta, Amit
Cosmic rays (CRs) are a dynamically important component of the interstellar medium (ISM) of galaxies. The $\sim$GeV CRs that carry most CR energy and pressure are likely confined by self-generated turbulence, leading them to stream along magnetic fie
Externí odkaz:
http://arxiv.org/abs/2205.08174
The turbulent dynamo is a powerful mechanism that converts turbulent kinetic energy to magnetic energy. A key question regarding the magnetic field amplification by turbulence, is, on what scale, $k_{\rm p}$, do magnetic fields become most concentrat
Externí odkaz:
http://arxiv.org/abs/2204.00828
Autor:
Beattie, James R., Krumholz, Mark R., Federrath, Christoph, Sampson, Matt, Crocker, Roland M.
The interstellar medium (ISM) of star-forming galaxies is magnetized and turbulent. Cosmic rays (CRs) propagate through it, and those with energies from $\sim\,\rm{GeV} - \rm{TeV}$ are likely subject to the streaming instability, whereby the wave dam
Externí odkaz:
http://arxiv.org/abs/2203.13952
Autor:
Beattie, James R., Krumholz, Mark R., Skalidis, Raphael, Federrath, Christoph, Seta, Amit, Crocker, Roland M., Mocz, Philip, Kriel, Neco
Energy equipartition is a powerful theoretical tool for understanding astrophysical plasmas. It is invoked, for example, to measure magnetic fields in the interstellar medium (ISM), as evidence for small-scale turbulent dynamo action, and, in general
Externí odkaz:
http://arxiv.org/abs/2202.13020