301 citations
- Goddard Space Flight CenterUS76 papers
- University of Maryland, Baltimore CountyUS29 papers
- University of Maryland, College ParkUS18 papers
- Universities Space Research AssociationUS16 papers
- Centre National de la Recherche ScientifiqueFR11 papers
- Max Planck Institute for AstrophysicsDE11 papers
- Pennsylvania State UniversityUS11 papers
- European Space Astronomy CentreES10 papers
- Johns Hopkins UniversityUS9 papers
- Max Planck Institute for Extraterrestrial PhysicsDE9 papers
- National Institute for AstrophysicsIT9 papers
- University of OxfordGB8 papers
5 papers · 1 filter
Arbitrary-order Hilbert spectral analysis for time series possessing scaling statistics: a comparison study with detrended fluctuation analysis and wavelet leaders
Y. X. Huang, F. G. Schmitt, J. -P. Hermand +3
In this paper we present an extended version of Hilbert-Huang transform, namely arbitrary-order Hilbert spectral analysis, to characterize the scale-invariant properties of a time…
Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
Michael Koss, Richard Mushotzky, Ezequiel Treister +6
We have discovered a binary AGN in the galaxy Mrk 739 using Chandra and Swift BAT. We find two luminous L_2-10 keV=1.1*10^43 and 1.0*10^42 erg/s, unresolved nuclei with a projected…
High-energy emission from NGC 5506, the brightest hard X-ray Narrow Line Seyfert 1 galaxy
S. Soldi, V. Beckmann, N. Gehrels +2
We present results on the hard X-ray emission of NGC 5506, the brightest narrow line Seyfert 1 galaxy above 20 keV. All the recent observations by INTEGRAL, Swift and Suzaku have b…
The 2010 May Flaring Episode of Cygnus X-3 in Radio, X-Rays, and γ-Rays
Peter K. G. Williams, John A. Tomsick, Arash Bodaghee +7
In 2009, Cygnus X-3 (Cyg X-3) became the first microquasar to be detected in the GeV γ-ray regime, via the satellites Fermi and AGILE. The addition of this new band to the observat…
The theory of quantum levitators
François Impens, Franck Pereira Dos Santos, Christian J. Bordé
We develop a unified theory for clocks and gravimeters using the interferences of multiple atomic waves put in levitation by traveling light pulses. Inspired by optical methods, we…