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We study supersymmetric extensions of the Standard Model with small R-parity and lepton number violating couplings which are naturally consistent with primordial nucleosynthesis, thermal leptogenesis ...
3C390.3: More Stable Evidence for Origination of Double-Peaked Broad Balmer Lines from Accretion Disk Near Central Black Hole
Galaxies:Active – Galaxies:nuclei – Galaxies:Seyfert – quasars:Emission lines – Galaxies:individual: 3C390.3
2011/9/27
In this manuscript, the structure of broad emission line regions (BLRs) of well-mapping double-peaked emitter (AGN with broad double-peaked low-ionization emission lines) 3C390.3 is studied. Besides t...
Evolution of the Solar Nebula. IX. Gradients in the Spatial Heterogeneity of the Short-Lived Radioisotopes $^{60}$Fe and $^{26}$Al and the Stable Oxygen Isotopes
Evolution Solar Nebula IX. Gradients Spatial Heterogeneity Short-Lived Stable Oxygen Isotopes
2011/9/27
Short-lived radioisotopes (SLRI) such as $^{60}$Fe and $^{26}$Al were likely injected into the solar nebula in a spatially and temporally heterogeneous manner. Marginally gravitationally unstable (MGU...
Collision of an innermost stable circular orbit particle around a Kerr black hole
innermost stable circular orbit particle Kerr black hole
2011/1/13
We derive a general formula for the center-of-mass (CM) energy for the near-horizon collision of two particles of the same rest mass on the equatorial plane around a Kerr black hole. We then apply thi...
Forming Planetesimals by Gravitational Instability: II. How Dust Settles to its Marginally Stable State
Earth and Planetary Astrophysics (astro-ph.EP)
2010/12/23
Dust at the midplane of a circumstellar disk can become gravitationally unstable and fragment into planetesimals if the local dust-to-gas density ratio mu is sufficiently high. We simulate how dust se...
Perturbation of heliosynchronous orbits in stable Kaluza-Klein theory
heliosynchronous orbits stable Kaluza-Klein theory
2010/3/8
Although the methods and techniques have been greatly improved since the late nineteenth century, the precision on the measurement of the gravitational constant G does not exceed 1 part in 1000. Intri...