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- 73Rankin, Robert
- 32Sivakoff, Gregory Robert
- 18Kabin, Konstantin
- 15Marchand, Richard
- 13Altamirano, Diego
- 13Miller-Jones, James C. A.
- 23X-Rays: Binaries
- 14Field Line Resonances
- 14Magnetosphere
- 11Accretion
- 11Radio Continuum: Stars
- 10Acceleration
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Extreme quiescent variability of the transient neutron star low-mass X-ray binary EXO 1745-248 in Terzan 5
Download2018-01-01
Rivera Sandoval, L. E., Wijnands, Rudy, Denegaar, Nathalie, Cavecchi, Y., Heinke, Craig O., Cackett, Edward M., Homan, Jeroen, Altamirano, Diego, Bahramian, Arash, Sivakoff, Gregory Robert, Miller, Jon M., Parikh, Aastha S.
EXO 1745−248 is a transient neutron star low-mass X-ray binary that resides in the globular cluster Terzan 5. We studied the transient during its quiescent state using 18 Chandra observations of the cluster acquired between 2003 and 2016. We found an extremely variable source, with a luminosity...
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Fast damping of ultralow frequency waves excited by interplanetary shocks in the magnetosphere
Download2015
Zong, Qui-Gang, Wang, Chengrui, Rankin, Robert
Analysis of Cluster spacecraft data shows that intense ultralow frequency (ULF) waves in the inner magnetosphere can be excited by the impact of interplanetary shocks and solar wind dynamic pressure variations. The observations reveal that such waves can be damped away rapidly in a few tens of...
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2014
Watt, Clare E. J., Hodgson, Cory R., Forsyth, Colin, Degeling, Alex W., Murphy, K. R., Rankin, Robert, Mann, Ian R., Rostoker, Gordon, Frey, Harald U., Rae, I. Johnathan
In this paper, we show that periodic auroral arc structures are seen at the location of one particular auroral substorm onset for the 15 min preceding onset, suggesting that field line resonances should be considered a strong candidate for triggering substorm onset. Irrespective of whether this...
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Field line resonances in a stretched magnetotail: CANOPUS optical and magnetometer observationsournal of Geophysical Research: Space Physics, 107(A7), [pp
Download2002
Tikhonchuk, V. T. , Wanliss, J. A., Rankin, Robert, Samson, J. C.
Ground-based observations support the existence of 1-4 mHz field line resonances (FLRs) at auroral latitudes. The low frequencies suggest that many nightside FLRs are excited on stretched magnetic field lines in the inner plasma sheet. Data from the Canadian Auroral Network for the OPEN Program...
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Finite element modeling of nonlinear dispersive field line resonances: Trapped shear Alfvén waves inside field‐aligned density structures
Download2003-01-01
Marchand, Richard, Rankin, Robert, Wanliss, J. , Tikhonchuk, V. T., Lu, J. Y.
Using a new two- dimensional nonlinear finite element model, we investigate the interaction of dispersive shear Alfven wave ( SAW) field line resonances ( FLRs) and ion acoustic waves in Earth's magnetosphere. We solve the full set of nonlinear reduced MHD equations self- consistently in...
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Finite Larmor radius effects in stimulated Raman scattering
1985
Boyd, T. J. M., Rankin, Robert. , Gardner, G. A.
Stimulated Raman scattering from a magnetized plasma has been examined using the set of Vlasov–Maxwell equations. The incident laser light, propagating in the form of an extraordinary mode, decays into a scattered extraordinary mode together with electron‐Bernstein waves. For sufficiently strong...
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2009-01-01
Croston, Judith H., Kraft, Ralph P., Hardcastle, Martin J., Birkinshaw, Mark, Worrall, Diana M., Nulsen, P. E. J., Penna, R. F., Sivakoff, Gregory Robert, Jordán, Andrés, Brassington, Nicola J., Evans, Daniel A., Forman, William R., Gilfanov, Marat, Goodger, Joanna L., Harris, Wayne E., Jones, Christine, Juett, Adrienne M., Murray, Stephen S., Raychaudhury, Somak, Sarazin, Craig L., Voss, Rasmus, Woodley, Kristin A.
We present new results on the shock around the south-west radio lobe of Centaurus A using data from the Chandra Very Large Programme observations (740 ks total observing time). The X-ray spectrum of the emission around the outer south-western edge of the lobe is well described by a single...
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2018-01-01
Tudor, Vlad, Miller-Jones, James C. A., Knigge, C., Maccarone, Thomas J., Tauris, T. M., Bahramian, Arash, Chomiuk, Laura, Heinke, Craig O., Sivakoff, Gregory Robert, Strader, Jay, Plotkin, Richard M., Soria, Roberto, Albrow, M. D., Anderson, G. E., van den Berg, Maureen, Bernardini, Federico, Bogdanov, Slavko, Britt, Christopher. T., Russell, D. M., Zurek, David R.
To confirm the nature of the donor star in the ultracompact X-ray binary candidate 47 Tuc X9, we obtained optical spectra (3000–10 000 Å) with the Hubble Space Telescope / Space Telescope Imaging Spectrograph. We find no strong emission or absorption features in the spectrum of X9. In particular,...
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Imaging the magmatic system beneath the Krafla geothermal field, Iceland: A new 3-D electrical resistivity model from inversion of magnetotelluric data
Download2019-01-01
Lee, Benjamin M, Unsworth, Martyn, Arnason, Knutur, Cordell, Darcy
Krafla is an active volcanic field and a high-temperature geothermal system in northeast Iceland. As part of a program to produce more energy from higher temperature wells, the IDDP-1 well was drilled in 2009 to reach supercritical fluid conditions below the Krafla geothermal field. However,...
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2015-01-01
Corbel, Stephane, Miller-Jones, James C. A., Fender, Rob P., Gallo, Elena, Maccarone, Thomas J., O'Brien, Tim, Paragi, Zsolt, Rupen, Michael P., Rushton, Anthony, Sabatini, Sabina, Sivakoff, Gregory Robert, Strader, Jay, Woudt, Patrick Alan
The universal link between the processes of accretion and ejection leads to the formation of jets and outflows around accreting compact objects. Incoherent synchrotron emission from these outflows can be observed from a wide range of accreting binaries, including black holes, neutron stars, and...