Tags » Fermi Gamma-ray Space Telescope

Witnessing a sleeping giant awaken

Astronomers using NASA’s Swift satellite have detected an outburst of high-energy X-rays emanating from a binary system in the constellation Cygnus – signs that a black hole is reawakening after 25 years of slumber.  456 more words

Astronomy

Left-Handed Cosmic Magnetic Field Could Explain Missing Antimatter

The discovery of a ‘left-handed’ magnetic field that pervades the universe could help explain a long standing mystery – the absence of cosmic antimatter. A group of scientists, led by Prof Tanmay Vachaspati from Arizona State University in the United States, with collaborators at the University of Washington and Nagoya University, announce their result in… 139 more words

Space

Despite extensive analysis, Fermi bubbles defy explanation

via Despite extensive analysis, Fermi bubbles defy explanation.

Despite extensive analysis, Fermi bubbles defy explanation

Aug 01, 2014

(Phys.org) —Scientists from Stanford and the Department of Energy’s SLAC National Accelerator Laboratory have analyzed more than four years of data from NASA’s Fermi Gamma-ray Space Telescope, along with data from other experiments, to create the most detailed portrait yet of two towering bubbles that stretch tens of thousands of light-years above and below our galaxy.
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Science & Technology

Astronomy Picture of the Day - Gamma Rays from Galactic Center Dark Matter?

Explanation: What is creating the gamma rays at the center of our Galaxy? Excitement is building that one answer is elusive dark matter. Over the past few years the orbiting Fermi Gamma-ray Space Telescope has been imaging our Galaxy’s center in gamma-rays. 142 more words

Astronomy Picture Of The Day

Gamma-Rays Tighten Window On Dark Matter Theories

UC Irvine astrophysicists report that gamma-ray photons observed from the center of the Milky Way Galaxy are consistent with the intriguing possibility of dark matter annihilation, according to research submitted to the journal… 112 more words

News

School Starts Today!

Today is the first day of school.  As a side activity I teach a class at one of the local law schools to help young attorneys (hopefully) get employed.  436 more words

Play And No Work

Gamma Ray Bursts and The Fireball Model.

Gamma-Ray Bursts (GRBs) are some of the most energetic events in the universe. The energy that is released during a GRB is impressively high (the most powerful bursts can eject energy equal to over 9000 supernovae). 1,203 more words

COSMOLOGY AND ASTOPHYSICS