... 2000 November 9 . The Cosmic X-Ray Background . ... Notably, the faint sources tend to be green and blue, showing x-ray characteristics of huge amounts of material falling into massive black holes in very distant galaxies. ... The XMM-Newton results add to the growing consensus that they do and that, from across the universe , x-rays produced as matter feeds these black holes account for the cosmic x-ray background. ... About APOD | ...

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• APOD: November 25, 1999 - 3C 295: X-rays From A Giant Galaxy
• APOD: 2004 February 3 - X-Rays From Antennae Galaxies
• APOD: December 31, 1995 - The X-ray Sources of M31

... NGC 4697: X Rays from an Elliptical Galaxy . ... Like other normal elliptical galaxies , NGC 4697 is a spherical ensemble of mainly older, fainter, low mass stars, with little star forming gas and dust compared to spiral galaxies. ... Publications with keywords: NGC 4697 - X-ray - Elliptical Galaxy - neutron star - black hole . Publications with words: NGC 4697 - X-ray - Elliptical Galaxy - neutron star - black hole . ... X Ray Stars of Orion . Jumbled Galaxy Centaurus A . ... Galaxies Away . ...

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• XWare > APOD
• Centaurus Galaxy Cluster in X Rays
• Астронет > The Cosmic X-Ray Background

home education > resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... On how our time differs from the early universe in terms of what galaxies are doing, and what role supermassive black holes play. ... Discusses how supermassive black holes powering the centers of galaxies may be more common than thought. ... On Hubble observations showing how common supermassive black holes are in galaxies. ...

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• ASP: The Universe At Your Fingertips TOC
• ASP: Book Review
• ASP: Cosmology: The Origin, Evolution & Ultimate Fate of the Universe

... 1) A Multiwavelength Study of Tadpole Galaxies in the Hubble Ultra Deep Field, Straughn, A., et al. (including S. Ravindranath), 2015, ApJ, 814, 97. 2) The Rate of Core Collapse Supernovae to Redshift 2.5 from CANDELS and CLASH Supernova Surveys, Strolger, L., et al. (including S. Ravindranath), 2015, ApJ, 813, 93. ... 18) "Resolved Galaxies in the Hubble Ultra Deep Field: Star Formation in Disks at High Redshift", Elmegreen, D.M., Elmegreen, B.G., Ravindranath, S., Coe, D.A., 2007, ApJ, 658, 763. ...

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• HST this week: 066
• Astronomy Resources
• Massive Galaxies over Cosmic Time

... Sunday , October 6, 2013 Standard quasar-like AGN Standard AGN have: · · · · · Luminous accretion disk (with X-ray corona) Bright line emission (ionised by disk) Dusty obscuring torus (emits in IR/sub-mm) Orientation-dependent observed properties Sometimes, extended radio jets Sunday , October 6, 2013 Another class of AGN Other AGN , exemplified by weak radio ... Sunday, October 6, 2013 Summary · · · · · · Not all AGN follow the "standard" accretion disk picture. ...

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• Galaxy Evolution: The origin and evoltuion of radio sources
• Galaxy Evolution: Radio sources and their environments
• Galaxy Evolution: EVN Deadline

... About ATNF overview . ... Parkes radio telescope . ... Online Resources . ... Australia Telescope 20GHz Survey . ... We present the first results from a study of the radio continuum properties of galaxies in the 2dF Galaxy Redshift Survey, based on thirty 2dF fields covering a total area of about 100deg 2 . ... mag. are detected as radio continuum sources in the NRAO VLA Sky Survey (NVSS). ... radio continuum: galaxies, galaxies: distances and redshifts, galaxies: active, galaxies: starburst . ...

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• Powerful AGN and Their Host Galaxies Across Cosmic Time
• Evolutionary Paths in Galaxy Morphology
• An HI selected sample of galaxies -- The HI mass function and the surface

... 2015: . Explanation of the Origin of Ultraluminous X-Ray Sources . Using optical spectroscopy, we revealed the origin of unusual objects: ultraluminous X-ray sources in other galaxies, which radiate in the X-ray range thousands times stronger than the black holes in our Galaxy. ... Detection of Radio Transients and Variable Radio Sources using the Archive Data of the Cold Surveys . ... O.Zhelenkova ), E.Majorova, A.Temirova . ... E.Majorova, O.Zhelenkova. ... Archive . ...

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• RCJ0311+0507
• Galaxy sector, archive 2005
• Galaxy sector, archive 2012

Next: Population Synthesis of X-ray Up: Cosmic Rays and Evolution Previous: Supernova Explosions . Immediately after the discovery of pulsars, especially of the Crab pulsar,   it became clear that rapidly rotating NS are copious sources of relativistic particles. ... Figure 37: Evolution of magnetorotational energy of NS in elliptical and spiral galaxies. ...

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• X-ray Galactic Sources and Binary Radiopulsars as Probes of the Initial Mass
• Population synthesis of X-ray sources at the Galactic center
• Contents

... Tonight's Sky . ... The Magazine . ... Observing . ... 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 . ... February 2006 resources . FROM THE February 2006 ISSUE . ... Get instant access to subscriber content on Astronomy.com! ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• A cosmic-ray source uncovered | Astronomy.com
• Mysterious source of high-energy cosmic radiation discovered | Astronomy.com
• January 2006 resources | Astronomy.com

The HI Mass Function: Open Questions Stephen Schneider University of Massachusetts The Evolution of Galaxies through the Neutral Hydrogen Window 1 February 2008 HI Mass Functions = ­1.5 = ­1.2 Is the bright end variable? Is There One HI Mass Function? ... Also face flux-bias problems when hunting close to noise: promote more weak sources than lose stronger sources Arecibo Slice AGES HI Mass Function to Date The slope is relatively flat for the first 142 galaxies detected. ...

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• http://www.naic.edu/~astro/frontiers/NewScieComa_Apr07.pdf
• The Evolution of Galaxies through the Neutral Hydrogen Window The Evolution of
• HI Mass Function

... 17 June 2015: Giulia Savorgnan, "Galaxy vivisection: black hole and host bulge affair" . 22 April 2015: Sebastain Sanchez, "Ionized gas in the CALIFA galaxies" . ... 22 December 2014: Federico Lelli, "Starbursts and Gas Dynamics in Dwarf Galaxies" . ... 20 November 2013: Leslie Hunt & Simone Bianchi, "Herschel highlights on large-scale galactic structure and nearby galaxies" . ... 23 December 2010: Emanuele Daddi, "New insights on the nature of massive galaxies in the distant Universe" . ...

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• A new survey of X-ray clusters of galaxies with the Swift-X-ray Telescope
• Workshops & courses
• Ionized outflows in z~2.4 quasar host galaxies

CATS home ] [ Back to CATS list ] [ ftp ] . ... Received 1999 November 5; accepted 2000 February 10 Since radio sources with Ultra Steep Spectra (USS; alpha -35ddeg, we selected only sources with angular sizes Theta Comparison with spectrally unbiased samples at similar flux density levels, shows that our spectral index, flux density, and angular size selections do not affect the angular size distribution of the sample, but do avoid significant contributions by faint foreground spiral galaxies. ...

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• X-ray binaries with relativistic jets -- microquasars
• Group IAG
• Spectral properties of X-ray loud e/g sources

... Cosmic rays are extremely high-energy particles from far beyond our Solar System. They provide us with important samples of material from outer space. ... But now, using the remains of a star that died a thousand years ago, astronomers have found clues as to where exactly cosmic rays form. ... A glowing, expanding ring of material is all that is left. ... Astronomers believe they could go on to grow into cosmic rays by colliding with the material of the ring. ...

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• ESO - agnii2007
• ESO - Thesis Topic: Dynamical models of multiple globular cluster populations
• ESO - Studying the Cosmological Evolution of Galaxy Clusters with (Sub-)mm

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• Spectrum-RG
• "Exploration" as a Classroom Resource
• High Energy Particles

. Go Here for Hubble Ultra Deep Field . ___________________________________________________________________ The Electronic Universe Project e-mail: nuts@moo.uoregon.edu

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• The Galaxy Gallery: Messier Objects
• Physics 410/510 Observational Cosmology
• U of O High Energy Physics Seminars

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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• z90-program
• High Energy Astrophysics Department at IKI RAN
• Spectrum-Roentgen-Gamma - The astrophysical Project at IKI RAN

... The Chandra Multiwavelength Project (ChaMP) seeks to understand the nature and evolution of quasars, galaxies, and clusters of galaxies in a large, carefully constructed multi-wavelength survey. ... Recent ChaMP Papers . The Field X-ray AGN Fraction to z=0.7 from the Chandra Multiwavelength Project and the Sloan Digital Sky Survey , Haggard, D., Green, P.J., Anderson, S.F., Constantin, A., Aldcroft, T., Kim, D.-W., Barkhouse, W.A. 2010, ApJ, 723, 1447 (arXiv:1004.1638) . ... 2009, ApJ, 690, 644 . ...

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• dictionary
• Aims of ChASeM33?
• The AstroStat Slog source matching

... 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 . ...

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• The Sun Energy Source Is Not Nuclear Fusion But Magnetic Fields. - an Astronomy
• Black Holes And RedShift - an Astronomy Net Blackholes Forum Message

Observations over the last decade indicate black-holes likely resided at the heart of most if not all galaxies. The correlation between the masses of these compact nuclear sources and their host galaxy is poorly understood and likely plays an important role in the formation and evolution, of at least the most massive systems, due to AGN feedback. ... I will give a brief summary of the reverberation mapping technique and describe the important role SkyMapper photometry can play in this program. ...

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• http://www.mso.anu.edu.au/seminars/abstracts/20160225-1100.html
• http://www.mso.anu.edu.au/seminars/abstracts/20141120-1100.html
• Julie Banfield | Astronomer

... QSO spectra in the ROSAT band are steeper than the background at harder energies, and furthermore at fluxes below 1E-14 ergs/(s cmќ) the quasar source counts flatten off and are replaced by more numerous populations of relatively low red-shift objects, apparently Narrow Emission Line Galaxies (NELG). ... We extracted the luminosity function from ROSAT Deep Survey results, and extrapolated by a factor of 2 - 3 to account for changes expected in the harder XMM band. ...

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• XMM-Newton Trainee Project 2004
• Extraction and correction of an X-ray light curve for a point-like source
• EPIC Background