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The Era of Neutrino Astronomy has Begun

By Guest PostNovember 30, 2013Scienceactive galactic nuclei, antarctic ice, askaryan radio array, astronomy, astrophysicists, black holes, cosmic neutrinos, data collection, era, extraterrestrial neutrinos, francis halzen, Galaxy, gamma ray, gregory sullivan, high energy particles, ice, icecube neutrino observatory, kara hoffman, magnetic fields, massless particles, mysterious phenomena, neutrino astronomy, neutrino detector, new age, nsf, origin and cause, solar system, south pole, statistically significant signal, stream to earth, telescope, teraelectronvolts, tev, university of maryland, vladimir papitashvili

COLLEGE PARK, Md. – Astrophysicists using a telescope embedded in Antarctic ice have succeeded in a quest to detect and record the mysterious phenomena known as cosmic neutrinos – nearly massless particles that stream to Earth at the speed of light from outside our solar system, striking the surface in a burst of energy that can be as powerful as a baseball pitcher’s fastball. Next, they hope to build on the early success of the IceCube Neutrino Observatory to detect the source of these high-energy particles, said Physics Professor Gregory Sullivan, who led the University of Maryland’s 12-person team of contributors to the IceCube Collaboration.

“The era of neutrino astronomy has begun,” Sullivan said as the IceCube Collaboration announced the observation of 28 very high-energy particle events that constitute the first solid evidence for astrophysical neutrinos from cosmic sources. (more…)

Interstellar Travelers of the Future May be Helped by MU Physicist’s Calculations

By Guest PostOctober 12, 2012Scienceastrophysicists, bill clinton, expansion, future, gravity, heat, human expansion, interstellar travel, light, mechanical explanation, missouri, movement, newtonian law, photon, physics, pioneer spacecraft, puzzle, radio wave, research project, researcher, sergei kopeikin, Space, spaceship symposium, star system, theory, time, universe, university

University of Missouri’s Sergei Kopeikin may have solved the Pioneer anomaly

COLUMBIA, Mo. – Former President Bill Clinton recently expressed his support for interstellar travel at the 100 Year Spaceship Symposium, an international event advocating for human expansion into other star systems. Interstellar travel will depend upon extremely precise measurements of every factor involved in the mission. The knowledge of those factors may be improved by the solution a University of Missouri researcher found to a puzzle that has stumped astrophysicists for decades.

“The Pioneer spacecraft, two probes launched into space in the early 70s, seemed to violate the Newtonian law of gravity by decelerating anomalously as they traveled, but there was nothing in physics to explain why this happened,” said Sergei Kopeikin, professor of physics and astronomy in MU’s College of Arts and Science. “My study suggests that this so-called Pioneer anomaly was not anything strange. The confusion can be explained by the effect of the expansion of the universe on the movement of photons that make up light and radio waves.” (more…)

Scientists Prepare to Take First-Ever Picture of a Black Hole

By Guest PostJanuary 16, 2012Scienceabyss of space, albert einstein, alma, arizona, astrophysicists, atacama large millimeter array, atmosphere, black hole, black void, center of milky way, Chile, cosmic traffic jam, dan marrone, daniel stolte, dimitrios psaltis, earth, einstein, event horizon, event horizon telescope, extreme environment, field of gravity, game changer, general relativity, global array, hawaii, haystack observatory, maelstroms, mass, massachusetts institute of technology, mauna kea, mercury, Mexico, MIT, mt graham, nothingness, optical telescopes, plasma, radio telescopes, radio waves, shadow, sheperd doeleman, south pole, space and time, steward observatory, sun, supermassive black hole, theory of general relativity, tucson, ultra precise timing, universe, university of arizona, virtual telescope, water vapor, wavelengths

*The Event Horizon Telescope is an Earth-sized virtual telescope powerful enough to see all the way to the center of our Milky Way, where a supermassive black hole will allow astrophysicists to put Einstein’s Theory of General Relativity to the test.*

Astronomers, physicists and scientists from related fields across the world will convene in Tucson, Ariz. on Jan. 18 to discuss an endeavor that only a few years ago would have been regarded as nothing less than outrageous.

The conference is organized by Dimitrios Psaltis, an associate professor of astrophysics at the University of Arizona’s Steward Observatory, and Dan Marrone, an assistant professor of astronomy at Steward Observatory. (more…)

Astrophysicists Find Evidence of Black Holes Ripping Stars Apart

By Guest PostOctober 17, 2011Scienceaccretion disk, active galactic nuclei, astrophysicists, black holes, chaotic orbits, cosmologists, dennis zaritsky, destroying stars, evidence of black holes, intermediate mass, johns hopkins university's, large galaxies, sdss, sloan digital sky survey, steward observatory, super-massive black hole, suvi gezari, university of arizona

*Sifting through observation data obtained of more than 2 million galaxies, a research team including UA astronomer Dennis Zaritsky has discovered phenomena telling of stars dying a violent death.

Astrophysicists at the University of Arizona and elsewhere have found evidence of black holes destroying stars, a long-sought phenomenon that provides a new window into general relativity.

The research, reported in the latest issue of the Astrophysical Journal, also opens up a method to search for the possible existence of a large population of presently undetectable “intermediate mass” black holes, which are hypothesized to be precursors to the super-massive black holes at the centers of most large galaxies. (more…)

Tag Archives: astrophysicists

The Era of Neutrino Astronomy has Begun

Interstellar Travelers of the Future May be Helped by MU Physicist’s Calculations

Scientists Prepare to Take First-Ever Picture of a Black Hole

Astrophysicists Find Evidence of Black Holes Ripping Stars Apart

*Sifting through observation data obtained of more than 2 million galaxies, a research team including UA astronomer Dennis Zaritsky has discovered phenomena telling of stars dying a violent death.