... These Frontier Fields will combine the power of HST with the natural gravitational telescopes of high-magnification clusters of galaxies. ... We are soliciting gravitational lensing maps for the last four Hubble Frontier Fields clusters (MACSJ0717.5+3745, MACSJ1149.5+2223, AbellS1063, and Abell 370) based upon the exceptionally deep HST FF imaging and other new ancillary data. ... For the full set of proposal instructions and requirements, see the FY16 Frontier Fields Lensing Map Call for Proposals....

The following images of the icy surface of Ganymede, the Solar System's largest moon, were made by the Galileo spacecraft during its ongoing mission to explore Jupiter and the Jovian system. ... This image was taken when Galileo was 7,448 kilometers (4,628 miles) away from Ganymede; north is to the top of the picture, and sunlight illuminates the surface from the lower left nearly overhead (77 degrees above the horizon). ... The image was taken June 27 at a range of 7,448 kilometers (4,628 miles). ...

... A typical density of energetic ions is 1 per cubic cm., and the ions are matched by electrons, generally of lower energy. ... This region is almost empty of plasma--typical density 0.01 ion/cubic cm., the "best vacuum" in the Earth's vicinity--but it contains a relatively strong magnetic field which, since it fills a large volume, can store appreciable magnetic energy, Many believe that this is the storehouse from which substorms draw their energy, releasing it quite rapidly. ...

... Field-aligned currents (FAC, also called the Birkeland currents) are essential to the linkage between the solar wind - magnetosphere system and the ionosphere . The main large scale FAC systems are the Region 1 and 2 currents. ... Expands to lower latitudes with increasing activity (see also the auroral ovals ) . ... TCV currents . ... Yamamoto, T., S. Inoue, N. Nishitani, M. Ozaki, and C.-I. Meng, A theory for generation of the paired region 1 and region 2 field-aligned currents, J. Geophys. ...

Ice Volcanoes Reshape Europa's Chaotic Surface . Ice-spewing volcanoes and the grinding and tearing of tectonic plates have reshaped the chaotic surface of Jupiter's frozen moon Europa, images from NASA's Galileo spacecraft reveal. ... Although the images do not show currently active ice volcanoes or geysers, they do reveal flows of material on the surface that probably originated from them, said Galileo imaging team member Dr. Ronald Greeley of Arizona State University, Tempe. ... Europa . ...

Astronomy Picture of the Day . Ganymede: A Really Groovy Moon . ... Credit: Galileo Mission Team , Galileo Spacecraft , NASA Explanation: Ganymede's surface is a wrinkled mess. As large ice-sheets shift on the moon's surface , parts of the surface buckle causing high ridges, deep furrows, and parallel grooves. ... The Galileo spacecraft has also just discovered that Ganymede has a region of orbiting charged particles called a magnetosphere - a first for any moon. ... NASA Official: Jay Norris. ...

... Astrophysics Group . ... VLSS . ... To facilitate access for UK and European users, MRAO is providing a UK Mirror of the VLA Low-frequency Sky Survey (VLSS), which is being produced in the US jointly by NRAO and the Naval Research Laboratory (NRL). ... A catalog of discrete sources on these images created by fitting a elliptical Guassians to all sources detected at the 5 sigma level or higher. ... This survey contains publicly available images and catalog information on over 1.8 million radio...

Solar Flare Origin - critical analysis" Lev Pusti'lnik We analyze current approach to solar flare origin in 3 aspects: a. Pre-flare equilibrium state of current-magnetic structure above active region and its evolution to flare state, b. Possible reasons of stability loss with transition of system in flare state c. Flare energy release in turbulent current sheet and particle acceleration in this system. ...

Подписка на рассылку обзоров astro-ph на Subscribe.Ru . ... Предыдущий выпуск (N335) . ... Обсудить на форуме Scientific.RU . ... Подписка на рассылку обзоров на Subscribe.Ru . Обзоры препринтов astro-ph . ... Собственно обзоры препринтов. ... Ранее обзоры также были на Астронете и на Scientific.Ru . ... АНКи доступны на Астронете , а с 2006 по 2008 г. также на сайте Элементы.Ру . ... Ранее они также размещались на сайте Астронет и в архиве моих обозрений (кодировка KOI8) на сайте Scientific.Ru . ...

... June 16, 2009 - TESIS has recorded new sizeable mass ejections from the Sun's atmosphere . One of this year's largest mass ejections from the Sun's atmosphere was recorded last Sunday by TESIS telescopes aboard the CORONAS-PHOTON satellite (video - wmv 4.3 MB). ... June 6, 2009 - This year's largest group of sunspots passes across the solar disk . ... June 2, 2009 - A malfunction in one of the TESIS telescopes has been fixed . ... A malfunction in one of the TESIS telescopes has been fixed . ...

... Tonight's Sky . ... The Magazine . News . Observing . ... Magazine . ... Press Room . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Press Releases . ... Astronomy magazine editors are here to help enrich media and blogger coverage of meteor showers, space missions, and night-sky events. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... Science Users Information > Observing with ESO Telescopes > Phase 3 > Public Surveys Current and Obsolete Releases . ... Deep co-added, resampled images and associated source lists per band (2nd data release) - OBSOLETE . ... YJKs images and associated source lists for 2 survey tiles (2nd updating data release) - OBSOLETE . ... YJKs images and associated source lists for 7 survey tiles (3rd superseding data release) - OBSOLETE . ... ZYJHKs images and associated source lists (2nd data release) (**) ....

... Data may be optionally rescaled. copyheader copy header keywords from one FITS file to another ( see also FTOOL cphead ). copywcs copy just the World Coordinate System keywords from the header of one FITS image to others. fcolappend append a constant column to a FITS table fitsparsename Prints components of the extended FITS file name. fitspha convert ASCII files to FITS PHA ( See also listhead supplied with FITSIO. modifyheader modifies FITS header. ...

SWIRL DISTRIBUTION ON THE LUNAR SURFACE: LOCATIONS ANTIPODAL TO THE YOUNG BASINS? ... There are two main classes of hypothesises of the swirl origin: formation of the swirls in the regions antipodal to large impact basins (1), and formation of the swirls in result of cometary impacts (2). ... The Orientale basin is youngest. ... Fig. ... On the other hand, there are two cases of absence of correlation between swirl areas and regions antipodal to impact basins (for small swirl formations). ...

A press release on the Canadian Galactic Plane Survey was associated with this poster. ... Below are maps of HI emission, HISA, and 12 CO emission in the eastern 25% of the survey, given as projections along the velocity ( Figure 1 ) and latitude ( Figure 2 ) axes. ... 2000, A. J. , submitted . ... GIF | ... We are developing automated methods of locating HISA in velocity cubes by removing large-scale emission in space and velocity and flagging small-scale dark residuals. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Solar System . ... Moon . ... Space Flight . ... Earth Satellites . ... Concept Spacecraft . ... Monthly Sky Notes . ... This image of Earth (left) and the Moon (right) was taken by the Juno space probe's JunoCam, three weeks after its 5 August launch. (image credit:: NASA / JPL / MSSS) . ... Earth and the Moon form a тАЬdouble planetтАЭ unique in the Solar System. ... Subscribe to Astronotes . ...

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... The new 6-metre diameter Observa-Dome , which will house the restored historic Calver telescope at the Armagh Observatory, arrived in Belfast today from the United States. This dome is a key element of the telescope domes restoration project currently being carried out at Armagh Observatory with funding from the Heritage Lottery Fund (HLF) and the Department of Culture, Arts and Leisure (DCAL). ... The Calver telescope as converted to a Schmidt camera. ... Telescope and Dome Restoration Project . ...

Current scientific project and their status . General description of our projects. The scientific problematics. The goals of the projects. Galaxy formation and evolution in cosmic voids . RFBR project 14-02-00520) . 19 December 2014 . Study of galaxies in nearby voids: cosmological perspective . RFBR project 11-02-00261) . ... RFBR project 06-02-16617) . 15 January 2008 . One of the important Laboratory directions is creation new BCG samples. ...

... The Vela pulsar was the first discovered in the southern hemisphere (Large et al., 1968) and in an exciting rush of papers was shown to be slowing down, having a polarization sweep across the pulse and to glitch (Radhakrishnan et al., ... Whilst the Vela X nebula had been imaged in great detail at 20 cm by Bock et al. (1998; 2002) and the VLA had imaged the region around the pulsar at 6 cm (Bietenholz et al., 1991) no arcsecond observations close to Vela had been undertaken at the ATCA. ... 2002). ...