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High energy emission can be produced in the interaction sites of both galactic and extragalactic jets with the surrounding medium. We have developed a radiative model that accounts for the continuous ...
Cosmological Constraints on the Sign-Changeable Interactions
Cosmological Constraints the Sign-Changeable Interactions
2011/1/13
Recently, Cai and Su [Phys.\ Rev.\ D {\bf 81}, 103514 (2010)] argued that the sign of interaction $Q$ in the dark sector changed in the approximate redshift range of $0.45\,\lsim\, z\,\lsim\, 0.9$, by...
A search for Star-Planet-Interactions in the upsilon Andromedae system at X-ray and optical wavelengths
Star-Planet-Interactions the upsilon Andromedae system
2011/1/11
Close-in, giant planets are expected to influence their host stars via tidal or magnetic interaction. But are these effects strong enough in suitable targets known so far to be observed with today's i...
Acceleration and Particle Field Interactions of Cosmic Rays II: Calculations
Acceleration Particle Field Cosmic Rays II
2011/1/13
Based on the generic acceleration model, which suggests different types of electromagnetic interactions between the cosmic charged particles and the different configurations of the electromagnetic (pl...
Retrograde Hot Jupiters from Secular Planet-Planet Interactions
Retrograde Hot Jupiters Secular Planet-Planet Interactions
2010/11/15
The search for extra-solar planets has led to the surprising discovery of many Jupiter-like planets in very close proximity to their host star1, the so-called “hot Jupiters.”
The interactions of winds from massive young stellar objects
interactions of winds massive young stellar objects
2010/11/10
The supersonic stellar and disk winds possessed by massive young stellar objects will produce
shocks when they collide against the interior of a pre-existing bipolar cavity (resulting from an earlier...
Diffuse light and galaxy interactions in the core of nearby clusters
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
The kinematics of the diffuse light in the densest regions of the nearby clusters can be unmasked using the planetary nebulae (PNs) as probes of the stellar motions.
WASP-33: The first delta Scuti exoplanet host star and evidence of star-planet interactions
Earth and Planetary Astrophysics (astro-ph.EP) Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
We report the discovery of photometric oscillations in the host star of the exoplanet WASP-33 b (HD 15082). The data were obtained in the R band both in transit and out-of-transit phases from the Mont...
3D sph simulations of giant herbig-haro flows and jet-cloud interactions in star formation regions
smoothed particle hydro-dynamics star formation regions
2009/6/4
We review some recent results of three-dimensional smoothed particle hydro-dynamics (SPH) simulations of overdense, radiatively cooling jets in star formingregions. We discuss the structure and kinema...