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pro vyhledávání: '"Loi, Shyeh"'
Autor:
Loi, Shyeh Tjing
It is thought that magnetic fields must be present in the interiors of stars to resolve certain discrepancies between theory and observation (e.g. angular momentum transport), but such fields are difficult to detect and characterise. Asteroseismology
Externí odkaz:
http://arxiv.org/abs/2104.03112
Autor:
Loi, Shyeh Tjing
When a star evolves into a red giant, the enhanced coupling between core-based gravity modes and envelope-based pressure modes forms mixed modes, allowing its deep interior to be probed by asteroseismology. The ability to obtain information about ste
Externí odkaz:
http://arxiv.org/abs/2006.08635
Autor:
Loi, Shyeh Tjing
Magnetic fields are believed to be generated in the cores of massive main sequence stars, and these may survive on to later stages of evolution. Observations of depressed dipole modes in red giant stars have been touted as evidence for these fields,
Externí odkaz:
http://arxiv.org/abs/2002.11130
Observations of pressure-gravity mixed modes, combined with a theoretical framework for understanding mode formation, can yield a wealth of information about deep stellar interiors. In this paper, we seek to develop a formalism for treating the effec
Externí odkaz:
http://arxiv.org/abs/1910.09940
The spectrum of oscillation modes of a star provides information not only about its material properties (e.g. mean density), but also its symmetries. Spherical symmetry can be broken by rotation and/or magnetic fields. It has been postulated that str
Externí odkaz:
http://arxiv.org/abs/1804.03664
Stars are self-gravitating fluids in which pressure, buoyancy, rotation and magnetic fields provide the restoring forces for global modes of oscillation. Pressure and buoyancy energetically dominate, while rotation and magnetism are generally assumed
Externí odkaz:
http://arxiv.org/abs/1701.08771
Autor:
Loi, Shyeh Tjing, Murphy, Tara, Cairns, Iver H., Trott, Cathryn M., Hurley-Walker, Natasha, Feng, Lu, Hancock, Paul J., Kaplan, David L.
Electron density irregularities in the ionosphere are known to be magnetically anisotropic, preferentially elongated along the lines of force. While many studies of their morphology have been undertaken by topside sounding and whistler measurements,
Externí odkaz:
http://arxiv.org/abs/1604.05837
Autor:
Loi, Shyeh Tjing, Cairns, Iver H., Murphy, Tara, Erickson, Philip J., Bell, Martin E., Rowlinson, Antonia, Arora, Balwinder Singh, Morgan, John, Ekers, Ronald D., Hurley-Walker, Natasha, Kaplan, David L.
Geomagnetically-aligned density structures with a range of sizes exist in the near-Earth plasma environment, including 10-100 km-wide VLF/HF wave-ducting structures. Their small diameters and modest density enhancements make them difficult to observe
Externí odkaz:
http://arxiv.org/abs/1601.03045
Autor:
Gault, Baptiste, Loi, Shyeh Tjing, Araullo-Peters, Vicente J., Stephenson, Leigh T., Moody, Michael P., Shrestha, Sachin L., Marceau, Ross K. W., Yao, Lan, Cairney, Julie M., Ringer, Simon P.
Publikováno v:
Ultramicroscopy Volume 111 Issue 11 November 2011 Pages 1619 1624
Progress in the reconstruction for atom probe tomography has been limited since the first implementation of the protocol proposed by Bas et al. in 1995. This approach, and those subsequently developed, assume that the geometric parameters used to bui
Externí odkaz:
http://arxiv.org/abs/1510.02849
Autor:
Loi, Shyeh Tjing, Murphy, Tara, Bell, Martin E., Kaplan, David L., Lenc, Emil, Offringa, Andre R., Hurley-Walker, Natasha, Bernardi, G., Bowman, J. D., Briggs, F., Cappallo, R. J., Corey, B. E., Deshpande, A. A., Emrich, D., Gaensler, B. M., Goeke, R., Greenhill, L. J., Hazelton, B. J., Johnston-Hollitt, M., Kasper, J. C., Kratzenberg, E., Lonsdale, C. J., Lynch, M. J., McWhirter, S. R., Mitchell, D. A., Morales, M. F., Morgan, E., Oberoi, D., Ord, S. M., Prabu, T., Rogers, A. E. E., Roshi, A., Shankar, N. Udaya, Srivani, K. S., Subrahmanyan, R., Tingay, S. J., Waterson, M., Wayth, R. B., Webster, R. L., Whitney, A. R., Williams, A., Williams, C. L.
Refraction and diffraction of incoming radio waves by the ionosphere induce time variability in the angular positions, peak amplitudes and shapes of radio sources, potentially complicating the automated cross-matching and identification of transient
Externí odkaz:
http://arxiv.org/abs/1508.00965