Search results for Fermi wavelength

Nanomaterials Jul 22, 2020

Thermal manipulation of plasmons in atomically thin films

Surface plasmons in graphene have been widely studied in the past decade due to their very appealing properties, such as the strong tunability of its optical properties through electrical gating and the relatively high plasmon ...

Astronomy Jul 15, 2020

Variability of blazar 3C 273 examined by astronomers

Using data from space observatories and ground-based telescopes, astronomers have investigated variability of a blazar known as 3C 273. The new study, presented in a paper published July 6 on the arXiv pre-print server, sheds ...

Astronomy Jul 1, 2020

A binary star as a cosmic particle accelerator

With a specialized telescope in Namibia a DESY-led team of researchers has proven a certain type of binary star as a new kind of source for very high-energy cosmic gamma-radiation. Eta Carinae is located 7500 lightyears away ...

Astronomy Jun 2, 2020

Intense flash from Milky Way's black hole illuminated gas far outside of our galaxy

About 3.5 million years ago, the supermassive black hole at the center of our Milky Way galaxy unleashed an enormous burst of energy. Our primitive ancestors, already afoot on the African plains, likely would have witnessed ...

Nanophysics May 25, 2020

Nanoscale optical pulse limiter facilitated by refractory metallic quantum wells

In the past several decades, physicists have conducted deep laboratory investigations into nonlinear optics, plasma physics and quantum science using advanced high-intensity, ultrashort-pulse lasers. Increased use of the ...

Astronomy Mar 10, 2020

Radio galaxy NGC 3894 investigated with Fermi

Using the Large Area Telescope (LAT) onboard NASA's Fermi spacecraft, astronomers have investigated a nearby radio galaxy known as NGC 3894. Results of the study, presented in a paper published March 3, confirm the galaxy's ...

Astronomy Feb 18, 2020

Long-term multi-wavelength observations shed more light on blazar 1ES 1215+303

An international team of astronomers has performed a decade-long, multi-wavelength monitoring campaign of the blazar 1ES 1215+303. Results of this extensive study provide more insights into the nature of emission from this ...

Optics & Photonics Feb 13, 2020

Temporally shaping the electric field of an attosecond pulse

Chemical reactions are determined at their most fundamental level by their respective electronic structure and dynamics. Steered by a stimulus such as light irradiation, electrons rearrange themselves in liquids or solids. ...

Astronomy Jan 30, 2020

Astronomers investigate broadband variability of the blazar Markarian 501

An international team of astronomers has studied variable broadband emission of the gamma-ray blazar Markarian 501 during a period of its high X-ray activity. The research, published January 21 on the arXiv preprint server, ...

Quantum Physics Jan 8, 2020

Researchers investigate ultrafast reaction of superfluid helium triggered by extreme ultraviolet laser pulses

A team headed by Professor Frank Stienkemeier at Freiburg's Institute of Physics and Dr. Marcel Mudrich, professor at the University of Aarhus in Denmark, has observed the ultrafast reaction of nanodroplets of helium after ...

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