The Eight Parts of Speech:
... egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to learn the dignity of altruism and the responsibility of the human individual.” ...
... egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to learn the dignity of altruism and the responsibility of the human individual.” ...
Models for GRBs and diverse transients
... approximately 1051 erg has already happened and its initial blast reached the surface of the star before a weak jet, in this case 1048 erg sK1, finally arrives. The total energy in this jet, approximately 1050 erg per jet (and there is one at the other pole), is not especially small, just its power. ...
... approximately 1051 erg has already happened and its initial blast reached the surface of the star before a weak jet, in this case 1048 erg sK1, finally arrives. The total energy in this jet, approximately 1050 erg per jet (and there is one at the other pole), is not especially small, just its power. ...
Turbulent convection in stellar interiors
... Conclusion and perspectives • MUSIC: new hydro code devoted to the modelling of stellar interiors • Based on implicit time stepping to relax numerical stability limits inherent to stellar hydrodynamical problems • Results in modest, but already useful, speed-up ...
... Conclusion and perspectives • MUSIC: new hydro code devoted to the modelling of stellar interiors • Based on implicit time stepping to relax numerical stability limits inherent to stellar hydrodynamical problems • Results in modest, but already useful, speed-up ...
Word version - White dwarf stars and the Chandrasekhar limit
... After completing his intermediate two years with distinction in physics, chemistry, and mathematics, his next step was to work toward a B.A. honors degree. Chandra's first choice was mathematics. However his father insisted on physics, seeing no future in mathematics. When school started, he became ...
... After completing his intermediate two years with distinction in physics, chemistry, and mathematics, his next step was to work toward a B.A. honors degree. Chandra's first choice was mathematics. However his father insisted on physics, seeing no future in mathematics. When school started, he became ...
Complete quantum teleportation using nuclear magnetic resonance
... distances have been achieved using optical systems, the ®nal stage of the teleportation procedureÐwhich allows the complete recovery of the original stateÐwas omitted. Here we report an experimental implementation of full quantum teleportation over interatomic distances using liquid-state nuclear ma ...
... distances have been achieved using optical systems, the ®nal stage of the teleportation procedureÐwhich allows the complete recovery of the original stateÐwas omitted. Here we report an experimental implementation of full quantum teleportation over interatomic distances using liquid-state nuclear ma ...
Interactive 4 - Hertzsprung-Russell Diagram Explorer
... Star colours: Yellow, Red, Orange, White, Blue ...
... Star colours: Yellow, Red, Orange, White, Blue ...
Oxygen isotopes in circumstellar Al_2O_3 grains from meteorites
... The Al 20 3 grains exhibit a range in 16 0/ 18 0 that is larger than predicted for a suite of stars with the same starting composition (Fig. 3). The predicted range in 160/ 18 0 does not increase significantly for stars up to ~15M 0 (Dearborn 1992; El Eid 1994; Boothroyd et al. 1994). Thus, a differ ...
... The Al 20 3 grains exhibit a range in 16 0/ 18 0 that is larger than predicted for a suite of stars with the same starting composition (Fig. 3). The predicted range in 160/ 18 0 does not increase significantly for stars up to ~15M 0 (Dearborn 1992; El Eid 1994; Boothroyd et al. 1994). Thus, a differ ...
Neutrino Astrophysics
... was the apparent absence of energy conservation in nuclear β decay that first lead Wolfgang Pauli, more than 80 years ago, to suggest that some undetected neutral particle (the νe ) must be escaping from nuclear β decay experiments. Neutrinos play a very special role in astrophysics [2]. First, they ...
... was the apparent absence of energy conservation in nuclear β decay that first lead Wolfgang Pauli, more than 80 years ago, to suggest that some undetected neutral particle (the νe ) must be escaping from nuclear β decay experiments. Neutrinos play a very special role in astrophysics [2]. First, they ...
Radiation vs. Gas Pressure, the Stellar Mass
... that extra power can be obtained in this simple derivation if one accounts for a slight inverse mass dependence of the characteristic opacity, e.g. κ ∼ M −1/2 . But in reality, the reason for the detailed differences are likely to be more complex, e.g. associated with the convective nature of stella ...
... that extra power can be obtained in this simple derivation if one accounts for a slight inverse mass dependence of the characteristic opacity, e.g. κ ∼ M −1/2 . But in reality, the reason for the detailed differences are likely to be more complex, e.g. associated with the convective nature of stella ...
A radio-pulsing white dwarf binary star
... AR Sco’s optical flux can increase by a factor of four within 30 s, and they are detectable at radio frequencies, the first such detection for any white dwarf system. They reflect the spin of a magnetic white dwarf which we find to be slowing down on a 107 yr timescale. The spin-down power is an ord ...
... AR Sco’s optical flux can increase by a factor of four within 30 s, and they are detectable at radio frequencies, the first such detection for any white dwarf system. They reflect the spin of a magnetic white dwarf which we find to be slowing down on a 107 yr timescale. The spin-down power is an ord ...
Gravitational Radiation:
... halted by centrifugal forces (~ 1000 rotations/s); sharp bounce. PNS differential rotation (shear) feeds a “bar-mode” instabilities (“tumbling cigars”) at 50ms. Differential rotation stretches magnetic field, amplifies it; magnetic stresses drive polar outflows (jets). ...
... halted by centrifugal forces (~ 1000 rotations/s); sharp bounce. PNS differential rotation (shear) feeds a “bar-mode” instabilities (“tumbling cigars”) at 50ms. Differential rotation stretches magnetic field, amplifies it; magnetic stresses drive polar outflows (jets). ...
Review: How does a star`s mass determine its life story?
... • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun, the white dwarf limit (or Chandrasekhar limit). © 2010 Pearson Education, Inc. ...
... • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun, the white dwarf limit (or Chandrasekhar limit). © 2010 Pearson Education, Inc. ...
Coronal Mass Ejections and Angular Momentum Loss in Young Stars
... disks? In Aarnio et al. (2010), we did not find evidence for this. Second, if there is not a star-disk link, how do the loops remain stable for the multiple rotation periods over which the X-ray flares are observed to decay? We showed in Aarnio et al. (2012) that when modeled as hot prominences, the ...
... disks? In Aarnio et al. (2010), we did not find evidence for this. Second, if there is not a star-disk link, how do the loops remain stable for the multiple rotation periods over which the X-ray flares are observed to decay? We showed in Aarnio et al. (2012) that when modeled as hot prominences, the ...
Devil physics The baddest class on campus IB Physics
... forced into the same quantum state Pauli exclusion principle says they will acquire large kinetic energy which allows the star to resist gravitational pressure to collapse ...
... forced into the same quantum state Pauli exclusion principle says they will acquire large kinetic energy which allows the star to resist gravitational pressure to collapse ...
Line-profile tomography of exoplanet transits – II. A gas
... transits have previously been reported in the lightcurve obtained by the SuperWASP survey of the A5 star HD15082 (WASP-33; V = 8.3, v sin i = 86 km s−1 ). Here we report further photometry and time-series spectroscopy through three separate transits, which we use to confirm the existence of a gas gi ...
... transits have previously been reported in the lightcurve obtained by the SuperWASP survey of the A5 star HD15082 (WASP-33; V = 8.3, v sin i = 86 km s−1 ). Here we report further photometry and time-series spectroscopy through three separate transits, which we use to confirm the existence of a gas gi ...
P-nuclei
p-Nuclei (p stands for proton-rich) are certain proton-rich, naturally occurring isotopes of some elements between selenium and mercury which cannot be produced in either s- or r-process.