Results 91 to 100 of about 50,454 (258)

First search for gravitational waves from the youngest known neutron star [PDF]

open access: yes, 2010
We present a search for periodic gravitational waves from the neutron star in the supernova remnant Cassiopeia A. The search coherently analyzes data in a 12 day interval taken from the fifth science run of the Laser Interferometer Gravitational-Wave ...
Abadie, J.   +82 more
core  

Detecting relic gravitational radiation from string cosmology with LIGO

open access: yes, 1996
A characteristic spectrum of relic gravitational radiation is produced by a period of ``stringy inflation" in the early universe. This spectrum is unusual, because the energy-density rises rapidly with frequency. We show that correlation experiments with
A. Abramovici   +15 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

open access: yesAstronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik   +12 more
wiley   +1 more source

Charge management for gravitational-wave observatories using UV LEDs [PDF]

open access: yesPhysical Review D, 2010
Accumulation of electrical charge on the end mirrors of gravitational wave observatories, such as the space-based LISA mission and ground-based LIGO detectors, can become a source of noise limiting the sensitivity of such detectors through electronic couplings to nearby surfaces.
Pollack, S. E.   +4 more
openaire   +2 more sources

Optimal combination of signals from co-located gravitational wave interferometers for use in searches for a stochastic background [PDF]

open access: yes, 2004
This article derives an optimal (i.e., unbiased, minimum variance) estimator for the pseudo-detector strain for a pair of co-located gravitational wave interferometers (such as the pair of LIGO interferometers at its Hanford Observatory), allowing for ...
Albert Lazzarini   +13 more
core   +4 more sources

Summertime methane and carbon dioxide emission rates and associated variables from a national‐scale survey of 146 reservoirs in the United States

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 2, March 2026.
Abstract Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here, we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the United States, plus ...
J. J. Beaulieu   +25 more
wiley   +1 more source

Searching for a Stochastic Background of Gravitational Waves with the Laser Interferometer Gravitational-Wave Observatory [PDF]

open access: yesThe Astrophysical Journal, 2007
The Laser Interferometer Gravitational-Wave Observatory (LIGO) has performed the fourth science run, S4, with significantly improved interferometer sensitivities with respect to previous runs. Using data acquired during this science run, we place a limit on the amplitude of a stochastic background of gravitational waves.
Abbott, B.   +241 more
openaire   +5 more sources

Sub-femto-g free fall for space-based gravitational wave observatories: LISA pathfinder results [PDF]

open access: yes, 2016
We report the first results of the LISA Pathfinder in-flight experiment. The results demonstrate that two free-falling reference test masses, such as those needed for a space-based gravitational wave observatory like LISA, can be put in free fall with a ...
Armano, M.   +118 more
core   +6 more sources

Exploring the Interior Structure of (16) Psyche Through Basin‐Scale Collisions

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Asteroid (16) Psyche, the largest member of the M/X‐type asteroids, may be the leftover core of a differentiated planetesimal. As such (16) Psyche will be explored in detail by NASA's discovery‐class Psyche mission in 2029. This will be the first mission to orbit a metal‐rich asteroid, or any asteroid in the 100–500 km size range.
Namya Baijal   +7 more
wiley   +1 more source

Proposed gravitational wave observatory based on solid elastic spheres [PDF]

open access: yesPhysical Review D, 1995
Spherical gravitational wave (GW) detectors offer a wealth of so far unexplored possibilities to detect gravitational radiation. We find that a sphere can be used as a powerful testbed for any metric theory of gravity, not only general relativity as considered so far, by making use of a deconvolution procedure for all the electric components of the ...
Coccia, E. (Eugenio)   +2 more
openaire   +3 more sources

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