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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Precise late-time asymptotics for the scalar field in the interior of Kerr BH and SCC
KerrBH SCC 内部标量场 精确后期 渐近性 Kerr-Cauchy视界
2023/5/16
In this talk, I will introduce the precise late-time asymptotics for the scalar field in the interior of a non-static subextreme Kerr black hole, which provides a new proof of the generic $H^1_{loc}$-...
Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find...
Precise Location,Distance Provide Breakthrough in Study of Fast Radio Bursts
Precise Location Distance Breakthrough Fast Radio Bursts
2017/1/9
For the first time, astronomers have pinpointed the location in the sky of a Fast Radio Burst (FRB), allowing them to determine the distance and home galaxy of one of these mysterious pulses of radio ...
Toward a precise measurement of matter clustering: Ly alpha forest data at redshifts 2-4
absorption lines large scale structure of universe
2014/12/26
We measure the filling factor, correlation function, and power spectrum of transmitted flux in a large sample of Lyα forest spectra, comprised of 30 Keck HIRES spectra and 23 Keck LRIS spectra. We inf...
Boss quasars track the expanding universe: The most precise measurement yet
Boss quasars track expanding universe The most precise measurement yet
2014/4/16
The Baryon Oscillation Spectroscopic Survey (BOSS), the largest component of the third Sloan Digital Sky Survey (SDSS-III), pioneered the use of quasars to map density variations in intergalactic gas ...
The HARPS search for southern extra-solar planets. XXXI. Magnetic activity cycles in solar-type stars: statistics and impact on precise radial velocities
Planetary systems – Stars: activity – Stars: chromospheres – Line: profi les – Techniques: radial velocities – Techniques:spectroscopic
2011/10/17
Context. Searching for extrasolar planets through radial velocity measurements relies on the stability of stellar photospheres. Aims. We aim at characterizing the statistical properties of magnetic ac...
Precise determination of muon and EM shower contents from shower universality property
shower universality muon signal electromagnetic signal Cherenkov water detectors
2011/10/17
We present two new aspects of Extensive Air Shower (EAS) development universality allowing to make accurate estimation of muon and electromagnetic (EM) shower contents in two independent ways. In the ...
Precise Estimates of the Physical Parameters for the Exoplanet System HD-17156 Enabled by HST FGS Transit and Asteroseismic Observations
stars planetary systems — stars oscillations — stars
2010/11/9
We present observations of three distinct transits of HD 17156b obtained with the Fine Guidance Sensors (FGS) on board the Hubble Space Telescope (HST)5.
Precise Gamma-Ray Timing and Radio Observations of 17 Fermi Gamma-Ray Pulsars
Gamma rays stars pulsars general Radio continuum stars X-rays: stars
2010/11/15
We present precise phase-connected pulse timing solutions for 16 gamma-ray-selected pulsars
recently discovered using the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope plus one ve...
A precise asteroseismic age and radius for the evolved Sun-like star KIC 11026764
precise asteroseismic age evolved Sun-like star KIC 11026764
2011/1/10
The primary science goal of the Kepler Mission is to provide a census of exoplanets in the solar neighborhood, including the identification and characterization of habitable Earth-like planets. The as...
Nature's Most Precise Clocks May Make "Galactic GPS" Possible; Pulsing Pulsars Help in Search for Gravitational Waves
Nature's Most Precise Clocks Galactic GPS Pulsing Pulsars Gravitational Waves
2010/1/11
Radio astronomers have uncovered 17 millisecond pulsars in our galaxy by studying unknown high-energy sources detected by NASA's Fermi Gamma-ray Space Telescope. The astronomers made the discovery in ...
HD 101065, the Most Peculiar Star：First Results from Precise Radial Velocity Study
Stars:oscillations roAp stars
2009/5/12
In this paper we discuss the prospects for asteroseismology
with spatial resolution and motivate studies of the most chemically peculiar
roAp star HD 101065. We present the first results from a high...
Utilization of GPS Satellites for Precise Irradiation Measurement and Monitoring
Albedo global positioning system solar irradiation
2009/5/6
Precise measurement of irradiance over the earth under various
circumstances like solar flares, coronal mass ejections, over an 11-year
solar cycle, etc. leads to better understanding of Sun–earth r...
PRECISE ASTROMETRIC POSITIONS OF 16 MINOR PLANETS OBTAINED BY GPO TELESCOPE OF ESO-LA SILLA IN 1988
ASTROMETRIC POSITIONS GPO TELESCOPE MINOR PLANETS
2009/4/23
PRECISE ASTROMETRIC POSITIONS OF 16 MINOR PLANETS OBTAINED BY GPO TELESCOPE OF ESO-LA SILLA IN 1988。
PRECISE ASTROMETRIC POSITIONS OF 40 MINOR PLANETS OBTAINED BY GPO TELESCOPE OF ESO - LA SILLA IN 1987-88
ASTROMETRIC POSITIONS ESO - LA SILLA 40 MINOR PLANETS
2009/4/8
543 precise astrometric positions of 40 minor planets, observed
during two missions ( January 1987 and September-October 1988) at La Silla were
obtained. 21 new minor planets were discovered during ...