Master`s thesis: On the investigation of dark matter haloes
... Clusters of galaxies consist of three constituents: Dark matter, gas, and stars (in galaxies). The most important constituent is dark matter because it is dominating the gravitational potential, the second most dominant constituent is the gas, whereas the stellar component only has negligible mass. ...
... Clusters of galaxies consist of three constituents: Dark matter, gas, and stars (in galaxies). The most important constituent is dark matter because it is dominating the gravitational potential, the second most dominant constituent is the gas, whereas the stellar component only has negligible mass. ...
Statistical survey of widely spread out solar electron events
... images, that were first observed with the EIT instrument onboard 2008) in extreme-ultraviolet (EUVI) and coronographic observations (COR1 and COR2 instruments) provided by the STEREO SOHO (Moses et al. 1997; Thompson et al. 1998). By the end of the 1990s, events with wider spreads were clas- spacecr ...
... images, that were first observed with the EIT instrument onboard 2008) in extreme-ultraviolet (EUVI) and coronographic observations (COR1 and COR2 instruments) provided by the STEREO SOHO (Moses et al. 1997; Thompson et al. 1998). By the end of the 1990s, events with wider spreads were clas- spacecr ...
3011800000360
... field with a strength of 1012 G on the stellar surface. The origin of energetic bursts requires magnetar-strength surface fields. It could be the case that the burst involves surface magnetar fields in the higher multipole components, while a disk standing at an inner radius set by a 1012 G surface ...
... field with a strength of 1012 G on the stellar surface. The origin of energetic bursts requires magnetar-strength surface fields. It could be the case that the burst involves surface magnetar fields in the higher multipole components, while a disk standing at an inner radius set by a 1012 G surface ...
How can double-barred galaxies be long-lived?
... adding a lot of new examples mainly detected in the near infrared (Erwin 2011, for a comprehensive review). However, the formation of nuclear bars has remained puzzling in spite of the efforts made by several groups to perform realistic modelling of these complex systems. Our difficulty in creating a s ...
... adding a lot of new examples mainly detected in the near infrared (Erwin 2011, for a comprehensive review). However, the formation of nuclear bars has remained puzzling in spite of the efforts made by several groups to perform realistic modelling of these complex systems. Our difficulty in creating a s ...
Pulsed high-energy γ-rays from thermal populations in the current
... wind for radii as small as the light cylinder has been confirmed by force-free simulations of pulsar magnetospheres (Spitkovsky 2006; Bai & Spitkovsky 2010). A prominent feature of Bogovalov’s solution is the warped equatorial current sheet, separating the two magnetic hemispheres, across which the ...
... wind for radii as small as the light cylinder has been confirmed by force-free simulations of pulsar magnetospheres (Spitkovsky 2006; Bai & Spitkovsky 2010). A prominent feature of Bogovalov’s solution is the warped equatorial current sheet, separating the two magnetic hemispheres, across which the ...
The Propagation of Ultra High Energy Cosmic Rays
... This thesis presents theoretical work on the propagation of ultra high energy cosmic rays, from their source to Earth. The different energy loss processes, resulting from cosmic ray interactions with the radiation fields, are addressed. The subsequent uncertainties in the energy loss rates and the e ...
... This thesis presents theoretical work on the propagation of ultra high energy cosmic rays, from their source to Earth. The different energy loss processes, resulting from cosmic ray interactions with the radiation fields, are addressed. The subsequent uncertainties in the energy loss rates and the e ...
Lennard-Jones quark matter and massive quark stars
... that in the inert gas, and should be determined in the context of quark stars. The model of quark stars composed of the Lennard-Jones matter is much different from conventional models (e.g. MIT bag model) in which the ground state is of the Fermi gas. In the former case, the quark clusters are non-r ...
... that in the inert gas, and should be determined in the context of quark stars. The model of quark stars composed of the Lennard-Jones matter is much different from conventional models (e.g. MIT bag model) in which the ground state is of the Fermi gas. In the former case, the quark clusters are non-r ...
Stationary Population III accretion discs
... of order 3. The details of this calculation are given in Appendix A. The optical depth still containing the surface density can be fully expressed in terms of density and temperature using the angular momentum equation (1). 4 O PAC I T Y Primordial matter as an unprocessed relict from the big bang s ...
... of order 3. The details of this calculation are given in Appendix A. The optical depth still containing the surface density can be fully expressed in terms of density and temperature using the angular momentum equation (1). 4 O PAC I T Y Primordial matter as an unprocessed relict from the big bang s ...
Supernovae: An example of complexity in the physics of
... Abstract. Because the collapse of massive stars occurs in a few seconds, while the stars evolve on billions of years, the supernovae are typical complex phenomena in fluid mechanics with multiple time scales. We describe them in the light of catastrophe theory, assuming that successive equilibria bet ...
... Abstract. Because the collapse of massive stars occurs in a few seconds, while the stars evolve on billions of years, the supernovae are typical complex phenomena in fluid mechanics with multiple time scales. We describe them in the light of catastrophe theory, assuming that successive equilibria bet ...
Solar Math - GLORIA Project
... http://spacemath.gsfc.nasa.gov Add your email address to our mailing list by contacting Dr. Sten Odenwald at [email protected] ...
... http://spacemath.gsfc.nasa.gov Add your email address to our mailing list by contacting Dr. Sten Odenwald at [email protected] ...
Observing and modeling the dynamic atmosphere of the low mass
... Aims. These observations aim at increasing our knowledge of the dynamic processes in play within the very close circumstellar environment where the mass loss of AGB stars is initiated. Methods. We first compare the spectro-interferometric measurements of the star at different epochs to detect the dyn ...
... Aims. These observations aim at increasing our knowledge of the dynamic processes in play within the very close circumstellar environment where the mass loss of AGB stars is initiated. Methods. We first compare the spectro-interferometric measurements of the star at different epochs to detect the dyn ...
The Dwarf Starburst Host Galaxy of a Type Ia SN at z= 1.55 from
... Even though the SN was still bright it was not detected in the spectrum (see Figure 3); only narrow emission lines from the host galaxy were visible with no trace of any continuum emission from either host or SN. ...
... Even though the SN was still bright it was not detected in the spectrum (see Figure 3); only narrow emission lines from the host galaxy were visible with no trace of any continuum emission from either host or SN. ...
N-body Simulations and Galaxy Formation
... processes taking place in interacting galaxies in the local universe are dominated by gas dynamics and star formation. The role of stellar dynamics, however, is difficult to estimate. Dynamical modeling has demonstrated that large scale interactions are efficient means of driving central inflows of ...
... processes taking place in interacting galaxies in the local universe are dominated by gas dynamics and star formation. The role of stellar dynamics, however, is difficult to estimate. Dynamical modeling has demonstrated that large scale interactions are efficient means of driving central inflows of ...
the PDF - Montana State University
... The Sun is the best observed object in astrophysics, but despite this distinction the nature of its well-ordered generation of magnetic field in 11-year activity cycles remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar anal ...
... The Sun is the best observed object in astrophysics, but despite this distinction the nature of its well-ordered generation of magnetic field in 11-year activity cycles remains a mystery. In this work, we place the solar cycle in a broader context by examining the long-term variability of solar anal ...
