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Topic: Donald Lynden Bell

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Encyclopedia: Donald Lynden Bell Donald Lynden-Bell (born Dover, England April 5 1935 –) is a British astronomer, best known for his theories that galaxies contain massive fl holes at their centre, and that such fl holes are the principal source of energy in quasars. Donald Lynden-Bell was educated at the University of Cambridge, where, after periods at the California Institute of Technology and the Royal Greenwich Observatory, he became professor of astrophysics in 1972. He is known for significant contributions to the theories of star motions, the formation of the Galaxy, spiral structure in galaxies, chemical evolution of galaxies, and the distributions and motions of galaxies and quasars. www.nationmaster.com /encyclopedia/Donald-Lynden_Bell   (255 words)

ScienceWeek Bell Burnell, however, disagrees, and she has stated: "Nobel prizes are based on long-standing research, not on flash-in-the-pan observation by a research student. The Bell discovery was made while Bell, Hewish, and Ryle were at Cambridge University (UK), and the astronomer Martin Rees, who was of the faculty at Cambridge at that time, writes of Jocelyn Bell as follows: "Jocelyn Bell received less than her fair share of credit for the discovery of pulsars. If the sporadic radio pulses had turned out to have a mundane interpretation, or to arise from some fault in their equipment, a premature announcement would not only have been embarrassing, but might have wasted the efforts of many other astronomers who would undoubtedly have followed up any rumor of this kind. scienceweek.com /2003/sw030530.htm   (11623 words)

Donald 1969 Donald Reynolds, WLAF defensive tackle for the Frankfurt Galaxy 2003 Donald O'Connor, actor/dancer, Singing in the Rain, dies at 78 1967 Donald Dufresne, born in Rimouski, NHL defenseman for the Edmonton Oilers www.brainyhistory.com /topics/d/donald.html   (1806 words)

Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure - Wikipedia, the free encyclopedia 1962 - Olin Eggen, Donald Lynden-Bell, and Allan Sandage theorize galaxy formation by a single (relatively) rapid monolithic collapse, with the halo forming first, followed by the disk. 1987 - David Burstein, Roger Davies, Alan Dressler, Sandra Faber, Donald Lynden-Bell, R.J. Terlevich, and Gary Wegner claim that a large group of galaxies within about 200 million light years of the Milky Way are moving together towards the "Great Attractor" in the direction of Hydra and Centaurus, www.wikipedia.org /wiki/Timeline_of_knowledge_about_galaxies,_clusters_of_galaxies,_and_large-scale_structure   (1064 words)

Donald Lynden-Bell, British astronomer April 5 in History Donald Lynden-Bell, British astronomer April 5 in History www.brainyhistory.com /events/1935/april_5_1935_93714.html   (36 words)

HubbleSite - Release Text about "Astronomers Discover Nearby Spiral Galaxy Hidden Behind the Milky Way" The discovery team included Ferguson, Dr. Renee Kraan-Korteweg (University of Groningen), Andy Loan (a research student), Dr. Ofer Lahav and Professor Donald Lynden-Bell of the University of Cambridge; Professor Butler Burton (Leiden University); and Dr. Patricia Henning (University of New Mexico, USA). The new galaxy was initially detected in radio light that penetrates this obscuring dust, and then ground-based telescopes were used to observe directly the galaxy with its distinctive barred-spiral shape, as seen through a crowded field of foreground stars belonging to the Milky Way. The galaxy's identification is a result of a long term project called the Dwingeloo Obscured Galaxy Survey (DOGS), which uses the 25-meter radio telescope at Dwingeloo in the Netherlands to look for radio emissions from galaxies that might be hidden from the view of optical telescopes by the Milky Way. hubblesite.org /newscenter/archive/1994/51/text   (393 words)

Great Attractor In the 1980s, a group of astronomers known as the "Seven Samurai" (David Burstein, Roger Davies, Alan Dressler, Sandra Faber, Donald Lynden-Bell, Roberto J. Terlevich, and Gary Wegner) found that galaxies are very unevenly distributed in space, with galactic superclusters separated by incredibly huge voids of visible ordinary matter. It lies in the so-called Zone of Avoidance, where the dust and stars of the Milky Way's disk obscures as much as a quarter of the Earth's visible sky. Up-to-date technical summaries on the Great Attractor may be available at: NASA's ADS Abstract Service for the Astrophysics Data System; the SIMBAD Astronomical Database mirrored from CDS, which may require an account to access; and the NSF-funded, arXiv.org Physics e-Print archive's search interface. www.solstation.com /x-objects/greatatt.htm   (660 words)

Past TCP Seminars Bell's theorem depends on two conditions that are not usually stated. The present derivation is valid independently of how the measurement is described, and there is an interesting connection to Bell inequalities. Lecture Two: Bell's Theorem and Local Theories of Quantum Measurement www.am.qub.ac.uk /users/g.gribakin/tcpr/seminars_past.html   (12449 words)

Andromeda Galaxy Similar polar planes containging contain many of the Milky Way's companion galaxies were found around three decades ago by William Kunkel and Donald Lynden-Bell. One hypothesis is that such satellite galaxies are tiny left-overs from the break-up of a more massive galaxy which has since been swallowed by their host but still move within the orbital plane of their predecessor, as galactic mergers are believed to be a main mechanism of galactic growth. www.solstation.com /x-objects/andromeda.htm   (2098 words)

Chandra :: Chronicles :: Cygnus A - Part III (Conclusion) :: April 17, 2001 Donald Lynden-Bell and Martin Rees of Cambridge University in England showed that a gigantic black hole in the center of a galaxy could produce the necessary energy if it swallowed matter, or gas, in an amount equal to about one Sun per year. This discovery opened the way for the eventual acceptance of a black hole model as the central powerhouse of quasars. The gas would form a disk, called an accretion disk, around the black hole. chandra.harvard.edu /chronicle/0101/cyga3.html   (1171 words)

RSSA Minutes Sept 1998 Donald Lynden-Bell was for many years Professor of Astrophysics in the University of Cambridge and Director of Astronomy there. The President welcomed Foreign-Associate, Professor Donald Lynden-Bell and his wife, Ruth, to their first meeting with us. He is at present dividing his time between Cambridge and Queens University, Belfast, where his wife is a professor in the department of Mathematics and Physics. www.rssa.uct.ac.za /meetings/min98-09.htm   (347 words)

[7.0] Beyond The Milky Way In 1971, astrophysicists Martin Rees (born 1942) and Donald Lynden-Bell (born 1935) suggested that supermassive black holes, with a mass of about a million Suns, would be able to produce such levels of activity from an inflow of mass. As mentioned previously, there seems to be a supermassive black hole in the center of the Milky Way, though it is relatively quiet for the time being. Some of the peculiar features seem to be due to highly energetic activities. www.vectorsite.net /tastga7.html   (3958 words)

News & Events: People Donald Lynden Bell, Professor of Astrophysics, received a CBE for services to astronomy; Peter Carolin, Professor of Architecture, received a CBE for services to architecture and Willem Buiter, Professor of International Macro economics from 1994 to May 2000, received a CBE for services to economics. Four Cambridge University academics were recognised in this year's Queen's Birthday Honours List. www.admin.cam.ac.uk /univ/newsletter/2000/aug-sep/6.html   (980 words)

Luyten Search Results For: Luyten. Star Name. Alpha Luyten. X Coordinate Dynamic.gamespy.com/~starcon Biographies and portraits of prize-winning astronomers of the 19th and 20th centuries 1968 Willem J. 1998 Donald Lynden-Bell Willem Luyten was educated at the Universities of Amsterdam and Leiden. A database of more than 2000 nearby stars LAL (Lalande) LB (Luyten Blue star) LDS (Luyten Double Star) LET LFT (Luyten FT) LHS (Luyten Half-Second) LP (Luyten. www.99hosted.com /names12023.html   (455 words)

The Mysterious Milky Way Rees and Bell predicted that if the radiation was intense emission resulting from gasses spiraling into a black hole, it would be detectable as a compact synchrotron radio source. Karl Jansky was an engineer employed by Bell Labs to study the source of annoying static that plagued transatlantic telephone calls. They believed that a black hole could be one possible explanation for the tremendous amount of energy that had been detected coming from the Galactic Center. www.astrophys-assist.com /educate/mmw/mmw.htm   (3654 words)

Heat leaves atom clusters cold (February 2001) - News - PhysicsWeb "When Donald Lynden-Bell first applied the concept of negative heat capacity to astrophysical systems, the physics community thought it was nonsense", said Haberland, "but we have proved that the phenomenon is real". A star system sounds enormous compared atom clusters, but is actually very small in terms of the long-range action of gravity. Register or sign in to our news alerting service or to alter your alert settings www.physicsweb.org /article/news/05/2/8   (520 words)

The 98th Nobel Symposium At this social event, George Contopolous and Donald Lynden-Bell reminisced about their interactions with Bertil Lindblad. The following evening included a Stockholm Opera performance of Guiseppi Verdi's Requiem (which was given extra significance by being dedicated to the victims of the "Estonia") and a subsequent supper in the cellars of the eighteenth-century Old Stockholm Observatory. The symposium banquet was held at the Stockholm Observatory, following aperitifs at the Observatory residence of Gunilla and Per Olof Lindblad (also formerly the residence of Bertil Lindblad). www.astro.su.se /English/groups/galactic/nobel98.html   (416 words)

Chandra :: Resources :: Q&A: Black Holes In 1971 Donald Lynden-Bell and Martin Rees suggested that the center of our galaxy should contain a supermassive black hole. I was hoping you could tell me the date scientists confirmed the presence of the black hole in the center of the Milky Way? In 1974, Bruce Balick and Robert Brown found a compact radio source there. chandra.harvard.edu /resources/faq/black_hole/bhole-19.html   (208 words)

2000 National Academy of Sciences Awards Farley was chosen "for his insightful use of isotope geochemistry to address the origin of Earth's atmosphere, the infall of cosmic dust, and the uplift rates of mountains." The award, presented since 1981, was established by ATandT Bell Laboratories in honor of William O. Baker and is currently supported by Lucent Technologies. NAS Award for Initiatives in Research -- a prize of $15,000 awarded annually in a different field (geochemistry or geophysics in 2000) to recognize innovative young scientists and to encourage research likely to lead toward new capabilities for human benefit -- goes to Kenneth A. Farley, professor of geochemistry, California Institute of Technology, Pasadena. Gilbert Morgan Smith Medal -- a medal and a prize of $15,000 awarded every three years for excellence in published research on marine or freshwater algae -- goes to Shirley W. Jeffrey, chief research scientist, Commonwealth Scientific and Industrial Research Organisation, Hobart, Australia. www4.nationalacademies.org /news.nsf/isbn/01122000?OpenDocument   (586 words)

Press Release 9 June 1998 Also, the portion of the Universe being probed by the Parkes telescope contains the predicted location of the centre of the "Great Attractor", a conglomeration of mass first inferred from galaxies' motions by Donald Lynden-Bell and collaborators in 1988. Sebastian Juraszek, a student at the University of Sydney, is searching this area and has found 82 galaxies, with a peak in the velocity distribution at the predicted redshift of the Great Attractor. This filament is about 300 million light years long, its true length unappreciated until the missing galaxies could be filled in. wwwatnf.atnf.csiro.au /research/multibeam/press.html   (563 words)

THE 1999 ECLIPSE - NEW AND COMMENTARY Prof Donald Lynden-Bell, an astronomer at Cambridge University, said the bands appeared at right angles to the direction of the Moon's shadow. One caller said she had taken a video recording, but when she watched the tape later, the streaks had vanished. He said: "It appeared to be a line across the sky and a darkening of the cloud about two fingers wide. www.greatdreams.com /19eclips.htm   (2663 words)

Headlines@Hopkins: Johns Hopkins University News Releases Use of the characteristics of groups of stars to constrain theories about galaxy formation and evolution was first pioneered by researchers Olin Eggen, Donald Lynden-Bell, and Allan Sandage in 1962. Researchers may then be able to use the remnant to learn more about the galactic merger that produced it, including when the merger took place, and the initial orbit and size of the satellite galaxy that merged into the Milky Way. At the time, their results suggested a fairly simple and rapid evolution of galactic structure. www.jhu.edu /news_info/news/home01/jan01/galaxy.html   (1047 words)

Scientific Family Tree Back row: Heather Morrison, Chris Flynn, Gary Da Costa, Ken Freeman, Donald Lynden-Bell. Ken was Donald's student at Cambridge; Heather, Chris and Gary were Ken's students at Stromlo; Laird and Ata were Gary's students at Yale; and Jackie was Heather's student at Case Western. Front row: Laird Thompson, Jackie Monkeiwicz, Ata Sarajedini. www.mso.anu.edu.au /%7Ekcf/kcf_ftp/photos/group.html   (52 words)

BBC NEWS In Depth Birthday Honours 2000 CBEs: A - H Professor Donald Lynden-Bell, Professor of Astrophysics, University of Cambridge. Anthony Donald Hawkins, Director, Fisheries Research Services Executive Agency, Scottish Executive. Alexander Scott Bell, Group managing director, Standard Life Assurance Company. news.bbc.co.uk /hi/english/in_depth/uk/2000/birthday_honours_2000/newsid_793000/793808.stm   (602 words)

What Happened All Those Years Ago - April 1935 - Born this day, Donald Lynden-Bell, British astronomer. 1986 - A bomb exploded in La Bell, a popular discotheque in West Berlin, killing two American soldiers and a Turkish woman. www.andibradley.com /whatya/apr05.htm   (5318 words)

The Institute Letter In a classic 1965 paper with Donald Lynden-Bell, a former Member in the School of Natural Sciences (Fall 2003), Professor Goldreich first described a mechanism of the growth of gravitational instabilities in sheared disks that is believed to be central to understanding the spiral structure of galaxies. In addition, he has written numerous frequently-cited papers on polar wandering, pulsar magnetospheres, gamma-ray bursts, interstellar turbulence, molecular clouds, astrophysical masers, solar system formation, magnetohydrodynamic turbulence, close binary stars, and white dwarf oscillations, among diverse subjects. www.ias.edu /the-institute-letter/archive/04Winter/winter04.php   (4731 words)

LG2005 - Mass and Mystery in the Local Group, Institute of Astronomy, Cambridge To celebrate the 70th birthday of Donald Lynden-Bell, the Institute of Astronomy, Cambridge will hold a conference entitled "Mass and Mystery in the Local Group" from 18-22 July 2005. We will bring together leading experts and young researchers to discuss recent advances of our understanding of: LG2005 - Mass and Mystery in the Local Group, Institute of Astronomy, Cambridge www.ast.cam.ac.uk /meetings/lg2005/format.html   (155 words)

anun2.html Donald Lynden-Bell (IoA), Josefa Masegosa (IAA,CSIC), Jorge Melnick (ESO) www.iaa.es /~estela/anun2.html   (1284 words)

News & Events: Awards and Prizes The Astronomical Society of the Pacific awarded its prestigious Catherine Wolf Bruce Medal for 1998 to Donald Lynden-Bell, Professor of Astrophysics at Cambridge. He also received an Honorary Degree of Doctor of Science from the University of Aberdeen in July. www.admin.cam.ac.uk /univ/newsletter/1998/aug-sep/5.html   (1101 words)

Love and the two-body problem (October 2001) - Physics World - PhysicsWeb Astronomer Donald Lynden Bell of Cambridge University, for instance, believes that his wife Ruth, now a professor in the atomistic-simulation group at Queen's University in Belfast, remained in a job below her capabilities for 30 years until she accepted her chair in Belfast in 1995. For the main part of their study, McNeil and Sher surveyed 620 couples where one partner was a physicist. Indeed, the two-body problem has led to many people - especially women - leaving physics altogether. physicsweb.org /article/world/14/10/10   (2165 words)

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