11 papers
This paper reports the discovery of significant far-ultraviolet excesses in nine Asymptotic Giant Branch stars via a GALEX survey, providing evidence for binary companions or accretion disks that may explain the aspherical shapes of planetary nebulae.
This paper argues that while Lorentz-boosted tau neutrinos at ultra-high energies ( eV) offer significantly greater detectability than muon neutrinos due to extended tau decay ranges, their observation remains rare, whereas lower-energy tau neutrino interactions (– eV) are predicted to occur more frequently in cubic-kilometer detectors.
This paper proposes that graviton-photon conversion in magnetic fields could generate detectable prompt and delayed kilohertz radio signals from supernovae like SN 1987A, offering a new method to probe gravitational bursts and presenting exact solutions for this conversion process in refractive media.
This paper presents a new, general analytical procedure for Inverse Compton Scattering on laser beams and monochromatic isotropic radiation that derives both relativistic and ultrarelativistic limits, reproducing previous results by Jones and Blumenthal while offering testable solutions for current and future experiments.
The paper proposes that detonating nuclear bombs to split an asteroid in flight is the most effective method for deflecting its trajectory, detailing the specific mechanisms and timing required for such an intervention.
This paper calculates the relic density of heavy stable 4th-generation neutrinos to establish a mass exclusion range of 60–290 GeV based on underground WIMP search data, while also identifying a narrow 45–50 GeV mass window compatible with the DAMA experiment's signal.
By reanalyzing velocity measurements of alpha Centauri A with optimized weighting to minimize sidelobes, the authors identified 42 oscillation frequencies and determined that the observed scatter in the data is caused by mode lifetimes of approximately 1–2 days, which are significantly shorter than those of the Sun.
This paper presents exact and approximate solutions for the gravitational clustering of a multifluid medium in an expanding Newtonian universe, demonstrating how the evolving ratio between fluid perturbations leads to distinct epochs of nonlinear clustering and galaxy formation for components like primordial hydrogen, helium, and massive neutrinos.
This paper proposes that Gamma-Ray Bursts originate from precessing, collinear gamma jets produced by inverse Compton scattering of thermal photons by relativistic electron beams from compact objects in binary systems, a mechanism that also explains observed spectral evolutions and the diffuse extended galactic halo.
This paper derives exact and expanded formulas for Inverse Compton Scattering of charged particles onto Black Body Radiation, demonstrating their utility in modeling accelerator thermal effects, explaining high-energy astrophysical phenomena like GRBs and SGRs, and predicting detectable gamma-ray fluxes from sources such as SN1006 and blazars.
This paper utilizes Hipparcos parallaxes and K-band magnitudes to identify two distinct period-luminosity sequences for Miras and semiregular variables, suggesting that semiregulars are Mira progenitors and that the transition between sequences reflects changes in pulsation mode or stellar structure near the tip of the AGB luminosity function.