Results 61 to 70 of about 130,686 (336)

Quasi-Periodic Oscillations from Low-mass X-Ray Binaries with Neutron Stars [PDF]

AIP Conference Proceedings, 2004
Before the launch of the Rossi X-ray Timing Explorer (RXTE) it was recognized that neutron star accretion disks could extend inward to very near the neutron star surface, and thus be governed by millisecond timescales. Previous missions lacked the sensitivity to detect them. The kilohertz quasi-periodic oscillations (QPO) that RXTE discovered are often,
openaire   +2 more sources

Chemical abundances of secondary stars in low mass X-ray binaries [PDF]

Proceedings of the International Astronomical Union, 2006
AbstractLow mass X-ray binaries (LMXBs) offer us an unique opportunity to study the formation processes of compact objects. Secondary stars orbiting around either a black hole or a neutron star could have captured a significant amount of the ejected matter in the supernova explosions that most likely originated the compact objects.
Jonay I. González Hernández, Rafael Rebolo, Garik Israelian   +2 more
openaire   +1 more source

The globular cluster mass/low mass X-ray binary correlation: implications for kick velocity distributions from supernovae [PDF]

, 2006
Optical and X-ray studies of six nearby galaxies show that the probability a globular cluster will be an X-ray source is consistent with being linearly proportional to its mass.
M. Smits, T. Maccarone, T. Maccarone, A. Kundu, S. Zepf   +4 more
semanticscholar   +1 more source

A 2.15 hr ORBITAL PERIOD FOR THE LOW-MASS X-RAY BINARY XB 1832-330 IN THE GLOBULAR CLUSTER NGC 6652 [PDF]

, 2012
We present a candidate orbital period for the low-mass X-ray binary (LMXB) XB 1832-330 in the globular cluster NGC 6652 using a 6.5 hr Gemini South observation of the optical counterpart of the system.
M. Engel, C. Heinke, G. Sivakoff, K. Elshamouty, P. Edmonds   +4 more
semanticscholar   +1 more source

THE CASE FOR A LOW MASS BLACK HOLE IN THE LOW MASS X-RAY BINARY V1408 AQUILAE (= 4U 1957+115) [PDF]

, 2015
There are few confirmed black holes with a mass of less ∼ 4 M ⊙ ?> and no neutron stars with masses greater than ∼ 2 M ⊙ ?> , creating a gap in the observed distribution of compact star masses.
S. Gomez, P. Mason, E. L. Robinson
semanticscholar   +1 more source

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

An Overabundance of Transient X-ray Binaries within 1 pc of the Galactic Center

, 2004
During five years of Chandra observations, we have identified seven X-ray transients located within 23 pc of Sgr A*. These sources each vary in luminosity by more than a factor of 10, and have peak X-ray luminosities greater than 5e33 erg/s, which ...
A. Ghez, E. Pfahl, F. K. Baganoff, J. Lu, King A. R., Lee H. M., M. P. Muno, M. R. Morris, Verbunt F., W. N. Brandt, Wegner W.   +10 more
core   +1 more source

A compact star rotating at 1122 Hz and the r-mode instability [PDF]

, 2008
We show that r-mode instabilities severely constraint the composition of a compact star rotating at a submillisecond period. In particular, the only viable astrophysical scenario for such an object, present inside the Low Mass X-ray Binary associated ...
Alessandro Drago, Alford, Andersson, Andersson, Bildsten, Blaschke, Blaschke, Brown, Friedman, Giuseppe Pagliara, Irene Parenti, Kaaret, Lavagetto, Levin, Page, Rezzolla, Wagoner   +16 more
core   +2 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Investigating the Ultracompact X-Ray Binary Candidate SLX 1735-269 with NICER and NuSTAR

The Astrophysical Journal
We present two simultaneous NICER and NuSTAR observations of the ultracompact X-ray binary (UCXB) candidate SLX 1735−269 while the source was in two different spectral states. Using various reflection modeling techniques, we find that xillverCO , a model
D. L. Moutard, R. M. Ludlam, M. Sudha, D. J. K. Buisson, E. M. Cackett, N. Degenaar, A. C. Fabian, P. Gandhi, J. A. García, A. W. Shaw, J. A. Tomsick   +10 more
doaj   +1 more source