... Magnetic Storms . ... Cosmic Rays . ... Energetic Particles . ... Solar fast Particles . We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. ... Should we be concerned about solar energetic radiation? ...

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• Positive Ions -- History
• Energetic Particles
• Positive Ions

... X Rays And The Circinus Pulsar . ... MIT, NASA Explanation: A bizarre stellar corpse 19,000 light-years from Earth, pulsar PSR B1509-58 beckons from the small southern constellation of Circinus . ... The Circinus pulsar itself, thought to generate more than 7 quadrillion volts (7 followed by 15 zeros), lies within the knot of bright emission near the center of the picture. ... Publications with keywords: X-ray - neutron star - pulsar . Publications with words: X-ray - neutron star - pulsar . ...

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• Астронет > X Rays And The Circinus Pulsar
• Journal "Peremennye Zvezdy"
• XWare > APOD

... 2001 September 13 . X-Rays and the Circinus Pulsar . ... MIT, NASA . ... The Circinus pulsar itself, thought to generate more than 7 quadrillion volts (7 followed by 15 zeros), lies within the knot of bright emission near the center of the picture. ... Near the top of the picture, lower energy x-ray emission shown in green is from gas shock-heated to millions of degrees Celsius. ... Tomorrow's picture: Eagle's Dust . ... About APOD | ... NASA Technical Rep.: ... A service of: LHEA at NASA / GSFC . ...

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• APOD: 2007 January 4 - Central Cygnus
• APOD: 2008 September 18 - Exploring the Ring
• APOD: 2003 November 28 - The Most Distant X-Ray Jet

... Magnetic Storms . ... Cosmic Rays . ... Energetic Particles . ... Solar fast Particles . We cannot observe the way the distant universe accelerates cosmic rays or produces energetic photons, but acceleration processes also occur on our Sun , though on a much more moderate scale. ... That is why such events are often missed by cosmic ray detectors near the equator, where the lowest energies are excluded by the Earth's magnetic field. ... Should we be concerned about solar energetic radiation? ...

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• Positive Ions -- History
• Low latitude aurorae [Oulu)
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. The image shows in red the X-ray emission produced by high-energy particles accelerated at the shock front where Centaurus A's expanding radio lobe (shown in blue) collides with the surrounding galaxy. (In the top-left corner X-ray emission from close to the central black hole, and from the X-ray jet extending in the opposite direction can also be seen.) . Chandra X-ray Observatory/Royal Astronomical Society

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• http://www.astronomy.com/sitefiles/resources/image.aspx?item=%7BE36C501E-059F-498A-8100-42F07575DD17%7D
• Fermi proves supernova remnants produce cosmic rays | Astronomy.com
• Chandra shows shocking impact of galaxy jet | Astronomy.com

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Quasi-stationary electron distributions for the different values of the particle escape time. ... The electron-cyclotron maser instability is widespread in the Universe, producing, e.g., radio emission of the magnetized planets and cool substellar objects. ... The model used takes into account the radiation escape from the source region and the particle flow through this region. ...

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• The 2001 Leonid Meteor Shower
• METEORS FROM COMET TEMPEL-TUTTLE
• Leonid Meteor Shower 2004 Armagh Observatory

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Facilities . ATNF facilities . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... ATCA . ... Visiting Parkes radio telescope . Visiting Australia Telescope Compact Array . ... Parkes radio telescope webcam . ...

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• Coherence in the radio emission
• Limits on particle energies by resonant inverse Compton scattering
• ATNF Daily Astronomy Picture

Next: Standard orientation Up: Preprocessing Previous: Bias correction . In a similar manner, long dark exposures of the same exposure time can be averaged to produce the DARK frames. ... Use the command COMPUTE/IMAGE to multiply the images by the exposure time and to add back the value for FLAT_BKG . ... Often, BIAS and DARK contain no large - scale structure. ... The commands AVERAGE/IMAGE and AVERAGE/WEIGHT offer number of options to compare the images and filter particle hits. ...

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• Removal of particle hits
• The Hamburg/SAO survey for emission line galaxies
• Bias correction

. Pulkovo Observatory of Russian Academy of Sciences is situated . near Saint-Petersburg. It was founded in 1839. 196140, Saint-Petersburg, Pulkovskoye chaussee 65/1 . English version . Russian version . This page has been accessed times since May 1, 1999.

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• Astronomical events
• RADIOSUN Workshop 2014

... Tadpole Emission Nebula and the Flaming Star Nebula . The constellation of Auriga harbors the cluster NGC 1893 which contains the Tadpole Nebula (IC 410). ... The Flaming Star Nebula, IC 405, is the magenta/purplish area and is the reflection portion of this nebulous region. 5nm Narrowband filters; H-alpha: O-III: S-II - 60: 60: 40 minutes x 600-second sub frames, Total= 2-hours 40-minutes, binned 1x1. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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Gamma-rays from the GC . M.Chernyakova (DIAS), D.Malyshev (DIAS), F.Aharonian (DIAS, MPIK), R.M.Crocker(MPIK), D.I.Jones(MPIK) 1 10°x10° Count and TS maps (>300 GeV) Gamma-rays from the GC 2 TS maps of the GC at different energies 300 MeV ­ 3GeV 3 GeV ­ 30 GeV 30 GeV ­ 300 GeV Gamma-rays from the GC 3 4 Gamma-rays from the GC Lightcurve 5 Gamma-rays from the GC Source spectrum Model X-ray and low-energy emission come from the central object, probably SMBH accretion disk. ...

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Next: A box, to include Up: To produce a region Previous: To produce a region . select cursor and circle . When in the image window, the mouse now has a box shape with an arrow at the upper left corner. The mouse buttons act as follows: . LEFT - to move the center of the circle at the position of the arrow point. ... RIGHT - idle. center the circle at the point source by positioning the arrow point and clicking on the LEFT mouse button. A circle will appear at the arrow position. ...

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• Magnetospheric Emission From Isolated Pulsars
• Eclipse Lightcurves for the Hydrostatic Model
• To produce a region mask using SAOimage interactively.

C C C C C C lass lass lass lass lass lass 1 2 3 4 5 6 Introduction, Background Solar System Stars Galaxies Cosmology Special Topics Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light T lescopes e 1. ... Kirchoff's Laws trum Emission Line Spectrum 2. A low-density, hot gas emits light whose spectrum consists of a series of bright emission lines. ... Absorption Spectrum 3. ...

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• Lecture Series 2010-2011 ? ?Particle Physics at the LHC and Cosmology? by
• Amateur Astronomers Association of New York ? Amateur Astronomers Association

... STScI-PRC96-38a GIANT "TWISTERS" AND STAR WISPS IN THE LAGOON NEBULA This NASA Hubble Space Telescope (HST) image reveals a pair of one-half light-year long interstellar "twisters" -- eerie funnels and twisted-rope structures (upper left) -- in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light-years away in the direction of the constellation Sagittarius. ... Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. ...

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• APOD: August 7, 1998 - M65 Without Moth
• APOD: 2000 July 20 - AR9077: Solar Magnetic Arcade
• HST Image of the Whirlpool Galaxy Nucleus

... Primordial theory review : Dick Bond . Defects and the CMB review : Andy Albrecht . ... Gravitational wave contribution to CMB anisotropies : V.B. Lukash and E.V. Mikheeva . C_l from cosmic strings : Lloyd Knox . Some aspects of CMB anisotropies induced from topological defects : Mairi Sakellariadou . ... CMB anisotropies from scaling sources : Ruth Durrer . ... SZ observations I : Sarah Church . ... Holes in the microwave sky? ... Detecting cosmic strings in the CMB : James Robinson . ...

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• NVSS Image ftp service Documentation Help for NVSS Image ftp service
• Abstract
• VLSS Image ftp service Documentation Help for VLSS Image ftp service

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Particle physics and astronomy are coming together to explain how the Universe was created and how it evolved into what we see today. PPARC supports UK research into the fundamental nature of the Universe,and helps. ... 44(0)1793 442000 . ... Web Site . ... Web . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . ...

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• Amateur Astronomers Of Central Iowa, AstroGuide Listing
• Central Texas Astronomical Society, Inc., AstroGuide Listing
• Central New York Astronomy Club, AstroGuide Listing

Next: Field of View Up: CCD Scientific Performance Previous: Back Illumination . The CCD acts as a storage medium, and with frame times of the order seconds, there is no obvious method of employing prompt co-incidence rejection of charged particle events. ... In conventional CCDs, a m track length results in an equivalent energy deposition of 5 - 6 keV, and significant confusion with X-ray events arises. ... A trade-off between rejection efficiency and spectroscopic efficiency is required. ...

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• Back Illumination
• Flatfield produced by omflatgen
• Description

... Looking south-east to the constellations of CтАж . ... Title: Looking south-east to the constellations of Centaurus and Scorpius behind the ANU 2.3m telescope building . ... Looking south-east to the constellations of Centaurus and Scorpius behind the ANU 2.3m telescope building NOTE: All images are copyright and must not be reproduced or mirrored in any form without written permission. ...

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• The frame for the central walkway
• Looking past the ANU 24-inch telescope to the constellations of the Southern
• The ANU 2.3m telescope building, the Anglo-Australian Telescope dome and the

Next: Amorphous magnesium silicate Up: Examples of data contained Previous: Examples of data contained . ... We have used the infrared optical constants of forsterite contained in the database for calculating the absorption cross sections of spherical and non-spherical particles in the Rayleigh limit (see Fig. The spectra are obtained by averaging the cross sections calculated for the three different crystallographic directions. ...

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• Wavelength dependence
• Linear polarization: wavelength dependence
• Database of Optical Properties -- Level: subpage

The above process keeps the # of protons and the # of neutrons in the early Universe constant. ... Remember, a free neutron (one that is not bound in an atomic nucleus) will decay into a proton + electron (+ anti-neutrino) in about 900 seconds. AT t=0.01 seconds, none of the neutrons have decayed. ... During this epoch, the proton-to-neutron ratio is 1.0 . Epoch #2: . ... Now we have 62% protons and 38% neutrons where at 0.01 seconds we had 50% protons and 50% neutrons. ...

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• U of O High Energy Physics Seminars
• Dark Matter in the Universe
• Constrains on Dark Matter