Results 41 to 50 of about 339,685 (278)
The Orbit of the Eclipsing X-ray Pulsar EXO 1722-363 [PDF]
, 2006 With recent and archival Rossi X-Ray Timing Explorer (RXTE) X-ray measurements of the heavily obscured X-ray pulsar EXO 1722-363 (IGR J17252-3616), we carried out a pulse timing analysis to determine the orbital solution for the first time.
Charles P. A. +12 more
core +2 more sources
Mathematics, 2022 This study focuses on tensor Z-eigenvalue localization and its application in the geometric measure of entanglement for multipartite quantum states. A new Z-eigenvalue localization theorem and the bounds for the Z-spectral radius are derived, which are ...
Liang Xiong +3 more
doaj +1 more source
Constraining the neutron star equation of state using quiescent low-mass X-ray binaries
, 2007 Chandra or XMM-Newton observations of quiescent low-mass X-ray binaries can provide important constraints on the equation of state of neutron stars.
A. Cumming +4 more
core +1 more source
On distance signless Laplacian spectrum and energy of graphs
Electronic Journal of Graph Theory and Applications, 2018 The distance signless Laplacian spectral radius of a connected graph G is the largest eigenvalue of the distance signless Laplacian matrix of G, defined as DQ(G) = Tr(G) + D(G), where D(G) is the distance matrix of G and Tr(G) is the diagonal ...
Abdollah Alhevaz +2 more
doaj +1 more source
Experimental Observation of the Spectral Gap in Microwave n-Disk Systems
, 2013 Symmetry reduced three-disk and five-disk systems are studied in a microwave setup. Using harmonic inversion the distribution of the imaginary parts of the resonances is determined.
Barkhofen, S. +5 more
core +3 more sources
The Bursting Behavior of 4U 1728-34: Parameters of a Neutron Star and Geometry of a NS-disk system
, 2003 We analyze a set of Type I X-ray bursts from the low mass X-ray binary 4U 1728 -34, observed with Rossi X-ray Timing Explorer (RXTE). and we implement an analytical model of X-ray spectral formation in the neutron star (NS) atmosphere during a burst.
Haberl, Frank +2 more
core +2 more sources
On the distance spectral radius of cacti
Linear Algebra and its Applications, 2012 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bose, Surya Sekhar +2 more
openaire +2 more sources
The normalized distance Laplacian
Special Matrices, 2021 The distance matrix 𝒟(G) of a connected graph G is the matrix containing the pairwise distances between vertices. The transmission of a vertex vi in G is the sum of the distances from vi to all other vertices and T(G) is the diagonal matrix of ...
Reinhart Carolyn
doaj +1 more source
The masses, radii and luminosities of the components of U Geminorum
, 2005 We present a phase-resolved spectroscopic study of the secondary star in the cataclysmic variable U Gem. We use our data to measure the radial velocity semi-amplitude, systemic velocity and rotational velocity of the secondary star.
A. Allan +39 more
core +1 more source
Maximal distance spectral radius of 4-chromatic planar graphs [PDF]
Linear Algebra and its Applications, 2021 We show that the kite graph $K_4^{(n)}$ uniquely maximizes the distance spectral radius among all connected $4$-chromatic planar graphs on $n$ vertices.
openaire +2 more sources