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... Science Frontiers ONLINE No. 37: Jan-Feb 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Flip-flop radio jets?Many radio galaxies and quasars are found to have a double-lobed structure, with one lobe on one side of the nucleus and another diametrically opposite. When examined in detail, these lobes turn out to be quite different in size, shape, and intensity. In particular, very bright regions on one lobe often correspond to gaps or regions of low brightness on the other. So striking are these asymmetries that astronomers think that these huge, tremendously energetic systems are ejecting material first from one side then the other. Somehow, one side of the galaxy or quasar communicates with the other, which may be ... light years away, and coordinates a flip-flop action. How and why radio galaxies and quasars should flip-flop is a major mystery. (Anonymous; "Flip-Flop Radio Jets?" Sky and Telescope, 68:506, 1984.) Comment. This flip-flop action immediately recalls the great elliptical galaxies which seem to be shooting out shells of stars first from one end, then the other. From Science Frontiers #37, JAN-FEB 1985 . 1985-2000 William R. Corliss ...
Terms matched: 2 - Score: 356 - 15 May 2017 - URL: /sf037/sf037p06.htm
... Short-Period Comets ACO15 Comet Reflectivities Are Similar to Those of Asteroids ACO16 Some Cometary Light Curves Resemble Those of Asteroids ACO17 New Comets Exhibit Different Brightening Behavior Than Old Comets ACO18 Anomalous Splitting of Comets ACO19 Tail-Wagging Comets ACO20 Cometary Outbursts ACO21 Comet Attrition Rates Imply Youth ACO22 No Ices in Cometary Reflection Spectra ACO23 The Blackness of Cometary Nuclei ACX OCCULTATIONS BY COMETS ACX1 Cometary Tails: Anomalous Occultations of Radio Stars AE ENIGMATIC OBJECTS AEO BRIGHT ENIGMATIC OBJECTS AEO1 Bright Objects near the Sun AEO2 Starlike Objects with Anomalous Motions AEO3 Unexplained Nebulous Objects AEX UNIDENTIFIED OBJECTS TRANSITING THE SUN, MOON, AND PLANETS AEX1 Objects Crossing the Face of the Sun AEX2 Objects Crossing the Moon's Disk AEX3 Unidentified Objects Transiting Jupiter AG THE EARTH AGB ANOMALIES IN THE EARTH'S ROTATION AGB1 Variations in Latitude AGL EARTH- ... Solar Oscillations AOF20 Rapid Variation of Celestial Radio Sources AOF21 Gamma-Ray Objects AOF22 Galactic Sources of Unidentified Radiation AOF23 White-Dwarf Anomalies AOF24 Globular-Cluster "Age' Anomalies AOF25 Infrared Bursters AOF26 Stellar "Age" Anomalies AOF27 Higher Masses of Smaller White Dwarfs AOF28 Historical Disappearance of Stars AOF29 Gamma-Ray Bursters AOF30 X-Ray Bursters AOO EXTENDED GALACTIC OBJECTS AOO1 X-Ray Rings AOO2 Nebular Jets AOO3 The North Polar Radio Spur AOO4 Triangular Appearance of Stars in Telescopes AOO5 Puzzling Nature of Bok Globules AOO6 Jets from Young Stars AOO7 The Red Rectangle AOO8 Herbig-Haro Objects AOO9 Molecular-Cloud Rings AOO10 Infrared Cirrus Clouds AOO11 Diffuse Cartwheel-Like Structures AOX STELLAR-ECLIPSE PHENOMENA AOX1 Anomalous Precession of Eclipsing Binaries AOX2 Anomalous Stellar-Eclipse Light Curves AOX3 Sudden Onsets and Cessations of Stellar Eclipses ...
Terms matched: 2 - Score: 178 - 15 May 2017 - URL: /cat-astr.htm
... Science Frontiers ONLINE No. 37: Jan-Feb 1985 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology A Disaster-driven Early Civilization Another Remarkable Specimen of Ancient Man Astronomy The Puzzle of the Moon's Origin When Mars Had Lakes Why Aren't the Martian Craters Worn Down? Flip-flop Radio Jets? Biology The Genome's Responses to Challenges "hopeful Monsters" in Iceland? Parasites May Reprogram Host's Cell Geology More Doubts About Asteroids The Earth is Expanding and We Don't Know Why The Grand Canyon Conundrum Evidence for A Giant Pleistocene Sea Wave Recent Pulsations of Life Geophysics "Crystal" Ball Lightning The Big Divot! Shower of Coke Chemistry & Physics Squarks and Photinos At Cern? What Does it ... Mean? The Secret of it All is in the Pi ...
Terms matched: 2 - Score: 139 - 15 May 2017 - URL: /sf037/index.htm
... gets Two hot spots on mercury Astronomers cope with both Biology NATURE COMMUNICATES IN MYSTERIOUS WAYS Those amazing insects The bombardier beetle pulse-jet Duesberg revisited Geology Pennsylvanian time-scale problems OF TIME AND THE CORAL - AND OTHER THINGS, TOO Paleomagnetic pitfalls What's another dipole or two? Wyoming: a periodic spring WYOMING: IS OLD FAITHFUL A STRANGE ATTRACTOR? Geophysics Ball lightning studies LUNAR ECLIPSES AND RADIO PROPAGATION General Novel forms of matter ...
Terms matched: 2 - Score: 139 - 15 May 2017 - URL: /sf071/index.htm
... cannot be used to measure distances reliably. We bring this subject up once more because Burbidge claims that some newly discovered quasar pairs cast additional doubt on redshift distance measurements. For example, she, along with Arp and Y. Chu, point to the quasar pair flanking the galaxy named Arp 220 (one of Arp's earlier discoveries). Quasars are very energetic sources of visible light, radio waves, and X-rays. The problem with Arp-220's flanking quasars is that they have much greater redshifts than the galaxy that seems to be situated in between them and likely at the same distance. Is this just a chance association, and the quasars are really much farther away than the galaxy -- as suggested by their high redshifts? Most astronomers believe this must ... . They point to 10 other galaxies nearby that are also straddled by quasar pairs with higher redshifts. All of these were discovered within the last four years. Are they all merely chance associations? Arp contends that these quasar pairs are actually great masses of matter that have been ejected in opposite directions by the galaxies they flank. In this, the quasar pairs remind one of the pairs of energetic jets of matter emitted in opposite directions by many active galaxies. Astronomers readily accept these pairs of jets but emphatically reject a physical connection between the quasar pairs and the galaxies that seem to have expelled them. To do otherwise would endanger much of modern cosmology. (Schilling, Govert; "Radical Theory Takes a Test," Science, 291:579, 2001.) Comment. If 10 ...
Terms matched: 2 - Score: 130 - 15 May 2017 - URL: /sf138/sf138p03.htm
