5th of March 2015 . Searching for high-energy particles hitting the moon . by Justin Bray (University of Manchester, U.K.) . High-energy cosmic rays and neutrinos, when they hit the moon, should produce a pulse of radio waves that can be detected from earth. ... The figure on the right shows the positions of the beams on the moon during the most recent experiment, using the Parkes 21 cm multibeam receiver ( Bray et al. 2015 ). | ... today * ATNF | Parkes | ...

... A Dark Pulsar in CTA 1 . ... Previously, the nebula CTA 1 showed an expanding supernova remnant , a jet , and a point source expected to be a pulsar -- a rotating neutron star producing pulses at radio energies. ... Now NASA's recently deployed Fermi Space Telescope has solved the mystery with some of its initial observations indicating that the point source is pulsing at gamma-ray energies . ... Publications with keywords: pulsar - gamma ray . Publications with words: pulsar - gamma ray . ...

... 2008 October 21 . A Dark Pulsar in CTA 1 . Credit: NASA , S. Pineault ( DRAO ) . Explanation: Where's the pulsar? Previously, the nebula CTA 1 showed an expanding supernova remnant , a jet , and a point source expected to be a pulsar -- a rotating neutron star producing pulses at radio energies. ... Now NASA's recently deployed Fermi Space Telescope has solved the mystery with some of its initial observations indicating that the point source is pulsing at gamma-ray energies . ...

Hubble Finds Ozone on Jupiter's Moon Ganymede . Courtesy of the Space Telescope Science Institute . ... Hubble found ozone's spectral fingerprint during observations of Ganymede made by Keith Noll and colleagues at the Space Telescope Science Institute, Baltimore, Maryland. ... CONTACT: Ray Villard FOR RELEASE: October 10, 1995 Space Telescope Science Institute (Phone: 410-338-4514) Keith Noll Space Telescope Science Institute, Baltimore, MD (Phone: 410-338-1828) PRESS RELEASE NO.: ... Ganymede . ...

Top] [Prev] [Next] . The Quick Reaction Camera (QRC) project will install four 0.4 meter telescopes in a remotely-operated global network to provide ground-based follow-up observations to high-energy transient events detected by the High Energy Transient Experiment (HETE) satellite, due to be launched later this year. ... An analysis of the capabilities of the QRC network for photometric detection and a progress report are reported here. ...

... The close X-ray binary with relativisic jest, contained probably a black hole, Cygnus X-3 has been detected in first time in Gamma-rays at enegries higher 100 МeV (AGILE, Tavani et al., ... Koljonen K.I.I.; Hannikainen D.C.; McCollough M.L.; Pooley G.G.; Trushkin S.A. The hardness-intensity diagram of Cygnus X-3: revisiting the radio/X-ray states 2010, MNRAS, 406, 307-319. ... X-ray image of Cygnus X-3 (Chandra) . ... Light curves Cygnus X-3 in gamma-rays (AGILE) and in radio cm-bands (Ryle tel., ...

... The close X-ray binary with relativisic jest, contained probably a black hole, Cygnus X-3 has been detected in first time in Gamma-rays at enegries higher 100 МeV (AGILE, Tavani et al., ... The bright radio flares from Cygnus X-3, caused by the massive ejections of matter with velocity close to speed of light accur in the certain ''huper-sort'' X-ray states (RXTE PCA), that was in the first time determined in the studies of HID -- ''hardness-intensity diagram'' [Fig.4]. ...

... Subject: Breaking News: Dark Matter detected? ... Breaking News: . DARK MATTER DETECTED?: http://www.dailymail.co.uk/sciencetech/article-2797310/dark-matter-particles-finally-coming-core-sun.html . ... http://www.dailymail.co.uk/sciencetech/article-2797493/Top-secret-space-plane-lands-California-coast.html . ... Special Lawrence Krauss lecture at QUB, 22 October: " Cosmic Connection: from the Big Bang to life on Earthб and Beyond." ... See: http://en.wikipedia.org/wiki/Lawrence_M._Krauss . ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Most intense burst ever detected . ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... region (region-6.2.2) [xmmsas_20030110_1802-5.4.1] . ... The region task will automatically determine the optimal source and background extraction regions for a detected source in an XMM observation. ... The regions are defined in sky coordinates. region will attempt to maximise the area of the extraction region for each source, whilst ensuring that the extraction regions of neighbouring sources do not overlap, and that the background extraction region for a given source excludes neighbouring...

Next: Radiopulsars as Sources of Up: Cosmic Rays and Evolution Previous: Cosmic Rays and Evolution . Presently, there is little doubt that galactic CR can be generated at rapidly expanding shock fronts produced by supernova explosions. ... Statistical properties of radiopulsars in our Galaxy indicate a formation rate of NS of about 1 per 10-20 years in the present cosmological epoch, while direct astronomical observations have so far not detected supernova explosions at this high rate. ...

... GAMMA RAY BURSTS . with guest Dr. Dale Frail from National Radio Astronomy Observatory . ... Gamma-Ray Bursts . A Collection of Resources to Get Behind the Headlines . Andrew Fraknoi (Foothill College & ASP) . ... This is a fine introduction to violent events in the universe by a noted astronomer, with a good section on gamma-ray bursts. ... On the Swift mission and what it is teaching astronomers about gamma-ray bursts. ... http://imagine.gsfc.nasa.gov/docs/science/know_l1/bursts.html . ...

Astronomers Detect Coolest Radio Star . ... The new radio-star is much smaller and colder than our Sun.€а With a surface temperature not much higher than that of a giant planet, and a size comparable to JupiterтАЩs, it is scarcely visible in optical light.€а Yet the radio flares seen at Arecibo show it must have a strong magnetic field, implying that the same could be true of other similar stars. ...

... Research objects and scientific purposes . Space scientific program includes development and launch of two supersmall spacecrafts "Universitetskiy" and "Kompas-2" intended for monitoring of radiation conditions near the Earth. ... All the studies conducted in the near-Earth space are characterised by strong radiation fields. ... The circular polar orbits, which cover all the near-Earth space, are the most favorable for comprehensive studies of the radiation conditions near the Earth. ...

... Aurora - June 23, 2015 . Sunspot, Active Region AR2371, produced an M2 class flare and sent a coronal mass ejection toward the Earth on June 21st. ... A meteor trail, airplane and clouds are also in the image. 30-second image with dark slide, Samyang 14mm, f/2.8 lens imaged at f/5.6, Unmodified Canon T1i on a Tripod, No filter, ISO 800, processed with Adobe Photoshop. 00: 17 hrs EDT, 23 June 2015, Harvard, MA. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... The standard science quicklook processing produces over a dozen sky maps at each downlink, and these maps are automatically searched for potential transient point sources. ... We have found that a heuristic modification of a formula derived by Li & Ma (1983) provides reasonably accurate estimates of p -values for point source detections even for very low p -value detections. ... Case 1u. The most straightforward approach uses the signal , where . ... To get a p -value, use . ...