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Emission line diagnostics of magnetospheric accretion in young stellar objects
Line emission Stars Accretion Star formation Formation of the accretion flow Stars Magnetic layer
2014/12/9
This thesis seeks to explain the nature of line emission observed in young stellar objects, and to use the lines as diagnostics of the accretion process that is central to star formation. We maintain ...
We present an overview of a few spectroscopic diagnostics of massive stars. We explore the following wavelength ranges: UV (1000 to 2000 A), optical (4000--7000 A) and near-infrared (mainly H and K ba...
New Interactive Solar Flare Modeling and Advanced Radio Diagnostics Tools
corona Sun magnetic fields radiation mechanisms non-thermal
2010/11/9
The coming years will see routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness in the wavelength domain. To capitalize on
the soon to be availabl...
Modelling chromospheric line profiles as diagnostics of velocity fields in ω Centauri red giant stars
line profiles globular clusters individual atmospheres mass loss
2010/11/11
Context. Mass loss of ∼ 0.1-0.3 M⊙ from Population II red giant stars (RGB) is a requirement of stellar evolution theory in order to account for several observational evidences in globular clust...
Diagnostics for spectropolarimetry and magnetography
Solar and Stellar Astrophysics (astro-ph.SR) Instrumentation and Methods for Astrophysics (astro-ph.IM)
2010/12/23
An assessment on the capabilities of modern spectropolarimeters and magnetographs is in order since most of our astrophysical results rely upon the accuracy of the instrumentation and on the sensitivi...
UV Diagnostics for the Energy Budget of Flares and CMEs
Sun corona flares coronal mass ejections
2010/9/16
Solar flares and coronal mass ejections convert large amounts of magnetic free energy into thermal, kinetic and potential energies, and into energy of non-thermal particles. The partitioning among the...
Magnetic field in the solar lower atmosphere can be measured by the use of the Zeeman and Hanle effects. In contrast, the coronal magnetic field well above the solar surface, which directly controls v...
Temperature diagnostics of the Broad Line Region in Active Galactic Nuclei。
Polarized Line Profiles as Diagnostics of Circumstellar Geometry in Type IIn Supernovae
Polarized Line Profiles Type IIn Supernovae Circumstellar Geometry
2009/6/30
Polarized Line Profiles as Diagnostics of Circumstellar Geometry in Type IIn Supernovae。
Diagnostics of the Ionized ISM：The Importance of Density Fluctuations
Ionized ISM Density Fluctuations
2009/6/18
Diagnostics of the Ionized ISM：The Importance of Density Fluctuations。
Spectroscopic diagnostics of precessing discs：the Stream-disc impact in xtej1118+480 (= kV uma) in outburst
Spectroscopic diagnostics precessing discs xtej1118+480
2009/6/17
Spectroscopic diagnostics of precessing discs：the Stream-disc impact in xtej1118+480 (= kV uma) in outburst。
Near-Infrared Surface Brightness Fluctuations as Diagnostics of Unresolved Stellar Populations
Near-Infrared Unresolved Stellar Populations Surface Brightness
2009/6/12
Near-Infrared Surface Brightness Fluctuations as Diagnostics of Unresolved Stellar Populations。
Calibrating nebular diagnostics of t* and abundance。
X-ray plasma diagnostics for totally and partially photoionized plasmas such as warm absorbers in agn
X-ray plasma diagnostics agn photoionized plasmas
2009/6/5
X-ray plasma diagnostics for totally and partially photoionized plasmas such as warm absorbers in agn。
Ultraviolet emission line ratios have long provided powerful diagnostics for thedensity, temperature, elemental abundances and ionization state of astrophysicalplasmas. With the current generation of ...