Results 71 to 80 of about 19,895 (210)

Pulsar Timing with the Parkes Radio Telescope for the Fermi Mission

, 2009
We report here on two years of timing of 168 pulsars using the Parkes radio telescope. The vast majority of these pulsars have spin-down luminosities in excess of 10^34 erg/s and are prime target candidates to be detected in gamma-rays by the Fermi Gamma-
A. Possenti, Abdo, Aharonian, B. Kızıltan, D. Champion, G. B. Hobbs, Granet, Hinton, Hui, J. E. Reynolds, Janssen, Johnston, K. Watters, Kanbach, M. Burgay, M. Keith, P. Weltevrede, R. Bhat, R. N. Manchester, S. Johnston, Smith, Standish, Weltevrede   +22 more
core   +1 more source

Asymptotically‐Flat Black Hole Solutions in Symmergent Gravity

Fortschritte der Physik, Volume 72, Issue 4, April 2024.
Abstract Symmergent gravity is an emergent gravity model with an R+R2$R+R^2$ curvature sector and an extended particle sector having new particles beyond the known ones. With constant scalar curvature, asymptotically flat black hole solutions are known to have no sensitivity to the quadratic curvature term (coefficient of R2$R^2$). With variable scalar
Beyhan Puliçe, Reggie C. Pantig, Ali Övgün, Durmuş Demir   +3 more
wiley   +1 more source

Fermi-LAT Detection of a Break in the Gamma-Ray Spectrum of the Supernova Remnant Cassiopeia A

, 2013
We report on observations of the supernova remnant Cassiopeia A in the energy range from 100 MeV to 100 GeV using 44 months of observations from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope.
,, /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Iceland U., Funk, S., Johannesson, G., Lande, J., Tibaldo, L., Uchiyama, Y., Yuan, Y.   +7 more
core   +2 more sources

Cosmology with Gravitational Waves: A Review

Annalen der Physik, Volume 536, Issue 2, February 2024.
The review gives an overview of the most recent advances in gravitational‐wave (GWs) cosmology. After an in‐depth discussion of methodologies and tools for GW cosmology, it presents the latest results on measurements of standard cosmological parameters from the LIGO, Virgo, and KAGRA detections.
Simone Mastrogiovanni, Christos Karathanasis, Jonathan Gair, Gregory Ashton, Stefano Rinaldi, Hsiang‐Yu Huang, Gergely Dálya   +6 more
wiley   +1 more source

Nuclear astrophysicists at war

Natural Sciences, Volume 4, Issue 1, January 2024.
The Manhattan program not only opened the path to the nuclear age for humans, but also triggered a lot of new questions and research directions in nuclear physics and astrophysics that still inform the ideas in these fields today. Abstract The question of energy production in stars stimulated an entire generation of young physicists in the 1930s who ...
Michael Wiescher, Karlheinz Langanke
wiley   +1 more source

Identification of the Early Fermi LAT Gamma-Ray Bright Objects with Extragalactic VLBI sources

, 2009
A list of 205 gamma-ray strong objects was reported recently as a result of a 3-month integration with the Large Area Telescope on board the Fermi Gamma-Ray Space Telescope.
Abdo, Abdo, Atwood, Bassani, Beasley, Fey, Fomalont, Fomalont, Hartman, Healey, Healey, Helmboldt, Kovalev, Kovalev, Kovalev, Lanyi, Lee, Lister, Lister, Lovell, Lähteenmäki, Ma, Mattox, Mirabal, Mirabal, Ojha, Petrov, Petrov, Petrov, Petrov, Pollack, Sowards-Emmerd, Sowards-Emmerd, Y. Y. Kovalev   +33 more
core   +1 more source

NASA Goddard Space Flight Center, on Behalf of the Fermi Large Area Telescope Collaboration [PDF]

, 2010
Because high-energy gamma rays can be produced by processes that also produce neutrinos, the gamma-ray survey of the sky by the Fermi (Gamma-ray Space Telescope offers a view of potential targets for neutrino observations. Gamma-ray bursts.
Thompson, David J.
core   +1 more source

Fermi-LAT Discovery of a Gamma-Ray Outburst from the Peculiar Compact Steep Spectrum Radiogalaxy 3C 216

The Astrophysical Journal
3C 216 is an extragalactic radio source classified as a compact steep spectrum (CSS) object, associated with the source 4FGL J0910.0+4257 detected by the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope.
Federica Giacchino, Giovanni La Mura, Stefano Ciprini, Dario Gasparrini, Marcello Giroletti, Marco Laurenti   +5 more
doaj   +1 more source

A General Overview for Localizing Short Gamma-Ray Bursts with a CubeSat Mega-Constellation

Frontiers in Astronomy and Space Sciences, 2020
The gamma-ray burst monitor (GBM) on the Fermi Gamma-Ray Space Telescope, for the first time, detected a short gamma ray burst (SGRB) signal that accompanies a gravitational wave signal GW170817 in 2017.
Fadil Inceoglu, Fadil Inceoglu, Fadil Inceoglu, Néstor J. Hernández Marcano, Rune H. Jacobsen, Christoffer Karoff   +5 more
doaj   +1 more source

Fermi Gamma-Ray Space Telescope [PDF]

, 2009
This slide presentation gives an overview the Fermi Gamma-ray space telescope. It includes information on spectral fitting, useful considerations, and binned vs.
Hays, Elizabeth
core   +1 more source