... 2006 August 14 . Cosmic Rays . ... Explanation: Have you ever been hit by a beam of high energy particles from above? ... Showers of high energy particles occur when energetic cosmic rays strike the top of the Earth's atmosphere. ... It is now known that most cosmic rays are atomic nuclei . ... The relative abundance changes with cosmic ray energy -- the highest energy cosmic rays tend to be heavier nuclei. ... This drawing illustrates air showers from very high energy cosmic rays . ...

Astronomy Picture of the Day . ... 14.08.2006 . ... Credit Copyright: NASA Explanation: Have you ever been hit by a beam of high energy particles from above? ... Showers of high energy particles occur when energetic cosmic rays strike the top of the Earth's atmosphere. ... It is now known that most cosmic rays are atomic nuclei . ... The relative abundance changes with cosmic ray energy -- the highest energy cosmic rays tend to be heavier nuclei. ... Publications with keywords: cosmic rays . ...

See also: 2004 Perseids . This year's annual Perseid meteor shower takes place between the dates 17th July and 24th August, peaking on the night of 12/13th August, with a formal maximum in the small hours of Wednesday 13th August. ... This is the most famous of all meteor showers and rarely fails to provide an impressive display. ... Comet Swift-Tuttle takes approximately 130 years to make one circuit around the Sun, and sheds particles when closest to the Sun in its orbit. ...

April 4, 2008 (Friday) Maxim Pospelov, Victoria University . ... Fall 2007 . Winter 2008 . Fall 2006 . Winter 2007 . Spring 2007 . ... A new generation cosmic ray detector, the Pierre Auger Observatory, has been designed to study cosmic rays with energy above 10 18 eV and answer the crucial questions of ultra high energy cosmic ray physics. ... Oscillating scalar fields, with an oscillation frequency much greater than the expansion rate, have been proposed as models for dark energy. ...

... Meteors and Meteorites . ... By admin August 2, 2011 Posted in: August . 13 August 2009: A perseid flashes through the sky (Image credit: Andreas M†ґller via wikimedia.org) . ... Not all meteors are sporadic events, the regular meteor showers occur when the Earth bulldozes through a great swarm of meteoroids drifting in orbit round the Sun. ... They are at their best in the pre-dawn hours, as the face of the Earth turning towards the Sun catches more meteors as the Earth moves through space. ...

A limit on the ultra-high-energy neutrino flux from Centaurus A Justin Bray For the LUNASKA collaboration Clancy James, Ron Ekers, Chris Phillips, Paul Roberts, John Reynolds, Rebecca McFadden, Ray Protheroe, Jaime Alvarez-MuЯiz, Justin Bray Outline: · Ultra-high-energy (UHE) cosmic rays neutrinos · Detecting UHE neutrinos · The lunar Cherenkov technique · Observations with the ATCA · Observations with Parkes · ASKAP and the future ... Detection Geometry Neutrinos are penetrating.. ...

... It turns out one possibility is a form of matter/energy invented by Einstein in the 1920s to make sure his equations of General Relativity did not predict the Expansion of the Universe. Although Einstein was willing to predict several things with his equations of General Relativity, he obviously thought an expanding Universe was too much, and so he invented the Cosmological Constant, which repels itself, and was meant to balance the force of gravity, and make the Universe static. ...

A long Chandra observation of Tycho has revealed a pattern of X-ray "stripes" never seen before in a supernova remnant. The stripes are seen in the high-energy X-rays (blue) that also show the blast wave, a shell of extremely energetic electrons. ... The stripes may provide the first direct evidence that a cosmic event can accelerate particles to energies a hundred times higher than achieved by the most powerful particle accelerator on Earth. ...

... Take the air we breathe: its molecules have energies around 0.03 ev (electron volt--see energetic particles ) as fast as a cannonball, though still quite a bit slower than the typical satellite. ... The Sun's plasma is much hotter , and that of the magnetosphere is still hotter. ... They are known as cosmic rays or cosmic radiation . ... Actually, the source of cosmic rays is probably not quite as intense, because cosmic ray particles can stay around the galaxy much longer than starlight. ...

... Articles | ... Forums . ... 230 deg . 49 deg . ... 130 deg . ... More Info . ... 210 deg . ... 168 deg . ... 249 deg . ... 195 deg . ... 271 deg . ... 110 deg . ... 338 deg . ... July 15 . 247 deg . ... 224 deg . ... 340 deg . ... July Phoenicids (PHE) . ... August 10 . 341 deg . ... 339 deg . ... 307 deg . ... 334 deg . ... 335 deg . ... 286 deg . ... 327 deg . ... 262 deg . ... 102 deg . ... 153 deg . ... 117 deg . ... December 2 . ... 123 deg . ... 100 deg . ... www.astronomy.net . ...

Main News Phones Research area Brief history Institute Structure Experimental Base Observational data English/Russian . research on the site(Google) . ... 7(4112)390400 . Fax: . 7(4112)390450 . ... Division of Superhigh Energy Particles . Head Prof. Ivan Sleptsov . Phone: +7(4112) 390-459 . Fax: +7(4112) 390-450 . ... super high energy (E> 10 17 eV) Cosmic Rays . ... Dr. Aleksey Krasilnikov . Prof. Aleksey Mikhailov . Prof. Zim Petrov . ... Post-graduate Yury Egorov . ...

The study of energetic particles acceleration and transport within the magnetosphere and on its boundaries is the main goal of DOK-2 experiment on Auroral Probe in a frame of INTERBALL project. ... DOK-2 uses two pairs of energetic particle telescopes . ... This information is available only during the most informative Real Time mode of DOK-2. ... Full 56-57 channel spectra accumulated during time intervals from 10 s to 1464 s depending on a particle intensity. ... For this time interval: . ...

... The TRACE images may be used without restrictions in publications of any kind. ... These two images, taken on 18 November 2000 at 15:54UT and 16:11UT, respectively, show such an event: the red circle in the image to the left shows a region where many loops are cooling, with bright loop tops (the intensity scales with the square root of the image to reduce the dynamic range). ... See also a collection of images related to the Sun, other cool stars, and solar-terrestrial effects . ... Images | ...

... RSDC . ... Press Releases (rus) || in Russian RSDC Quick Jump 9-year Galactic survey Catalog of sources 7-year Galactic Bulge Map Cleaning IBIS/ISGRI sky images IBIS/ISGRI Sensitivity vs. ... The INTEGRAL view of the Galaxy . ... May 2012: 9-year Galactic plane survey . ... They are ISGRI (higher plane detector of the IBIS telescope), JMX1 and JMX2 - two detectors of the JEM-X telescope. ... RSDC is actively participating in the all-sky survey carrying out with INTEGRAL observatory. ... 2016 IKI RAN...

New England observer Lew Gramer, fresh back from his mid-November fish observing and meteor-catching expedition in South Florida, reports that December also promises to be a great month for celestial sky-sparks!" ... Other showers adding to the mix this month include several very minor showers, such as the Chi Orionids (3 Dec), Monocerotids (9 Dec) and Sigma Hydrids (12 Dec), which usually contribute no more than 2 or 3 meteors per hour during even post-midnight observing this month. ...

SPACETELESCOPESCIENCEINSTITUTE Summary of FOC Activities for the period 9 August ­ 12 September 1992 FOC Status . ... On Day 261, the high voltage of the F/48 relay intensifier tripped. ... At the end of the observation set, the camera was brought back to HOLD mode. ... The FOC is presently still in SAFE mode. ... One observation set of Proposal 4029 taken on 23 August exhibited higher than average background counts along with a `flare' feature in the F/48 relay. ... FOC Report September 1992 ...

... It's a Meteor Shower Smaller than grains of sand, meteors vaporize in a bright streak of light as they hit Earth's atmosphere. Meteor showers come from comets, but the sporadic meteors on other nights are mostly asteroid bits. ... Meteor Showers Come From Comets Jupiter Earth Sun Comet Mercury Tips: A bright Moon can wash out meteors, making them hard to see. ... But the comet bits hit Earth's atmosphere so fast, the pieces vaporize in bright streaks -- making a meteor shower! ...

... This photograph shows a little-known cloud of cosmic gas and dust (known as a nebula) called Gum 15. This picture was snapped using a large telescope based in one of the most extreme environments on Earth; a very dry and very remote region of Chile called the Atacama Desert. ... Although all that makes the Atacama Desert sound uninviting it is the ideal location for a telescope. ... The higher a telescope is based, the less atmosphere it has to look through to see the stars. ...

... 09sep15: calibration run shows that problem is not the cal values. 28sep15: TsysLoad, antenna show that large Tsys Difference only occurs on antenna . ... Their ratio cancels the cal value. bottom: Ratios polB/polA . ... Comparing the ratio of sefdA,B to the ratio of TsysA,B shows that the Tsys difference is independent of the cal value (so the problem is not a problem with the cal values) . Tsys on load,antenna from 28sep15 showed that the large pola,B difference only occurs on antenna. ...