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Luke-warm dark matter: Bose-condensation of ultra-light particles
Luke-warm dark matter ultra-light particles
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2010/3/8
We discuss the thermal evolution and Bose condensation of ultra-light scalar particles with Compton wavelength of galactic scales. We find an upper bound of 1.5 K for the dark matter temperature from ...
Dust particles on a photon diet in V605 AQl
Dust particles photon diet V605 AQl
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2009/6/11
Dust particles on a photon diet in V605 AQl。
Scientists Make First Direct Observations of Biological Particles in High-Altitude Clouds（图）
Scientists Direct Observations Biological Particles High-Altitude Clouds
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2009/5/20
A team of atmospheric chemists has moved closer to what's considered the "holy grail" of climate change science: the first-ever direct detections of biological particles within ice clouds.The team, le...
Average Anisotropy Characteristics of High Energy Cosmic Ray Particles and Geomagnetic Disturbance Index Ap
Cosmic rays anisotropic variation geomagnetic disturbances
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2009/5/12
The average characteristics of the diurnal and semi-diurnal
anisotropy of cosmic ray intensity at relativistic energies have been obtained
by using data from the worldwide grid of neutron monitor fo...
Frozen Hydrocarbon Particles of Cometary Halos as Carriers of Unidentified Emissions
Comet ice luminescence frozen hydrocarbon particles unidentified lines
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2009/5/12
The possible nature of unidentified cometary emissions is
under discussion.We propose a new model of the ice particles in cometary
halos as a mixture of frozen polycyclic aromatic hydrocarbons and a...
Waves and Particles: Musings after the National Science Teachers Convention
Astronomy cosmic rays
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2007/4/11
04.05.07,it was staffing one of the walk-by tables in a gizmos and gadgets 揝hare-a-thon?session last week at the National Science Teachers Association (NSTA)抯 annual convention in St. Louis. My demo...
Elementary Particles under the Lens of the Black Holes
Elementary Particles the Lens of the Black Holes
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2010/10/18
After a brief review of the historical development and CLASSICAL properties of the BLACK HOLES, we discuss how our present knowledge of some of their QUANTUM properties shed light on the very concept ...