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Orbital inclination is crucial in determining the mass of the binary. The astrometric excess noise contain the orbital motion information, which can be used to constrain the inclination. We aim to constrain the orbital inclination of a…

天体物理仪器与方法 · 物理学 2026-05-26 Shilong Liao , Ye Ding , Shangyu Wen , Zhaoxiang Qi , Qiqi Wu

In this follow-up paper, we continue our study of the effect of using knowledge from electromagnetic observations in the gravitational wave (GW) data analysis of Galactic binaries that are predicted to be observed by the new \textit{Laser…

天体物理仪器与方法 · 物理学 2015-06-15 Sweta Shah , Gijs Nelemans , Marc van der Sluys

Multiwavelength followup of unidentified Fermi sources has vastly expanded the number of known galactic-field "black widow" and "redback" millisecond pulsar binaries. Focusing on their rotation-powered state, we interpret the radio to X-ray…

高能天体物理现象 · 物理学 2017-04-26 Zorawar Wadiasingh , Alice K. Harding , Christo Venter , Markus Böttcher , Matthew G. Baring

We present the most precise to date orbital and physical parameters of the well known short period (P=5.975 d), eccentric (e=0.3) double-lined spectroscopic binary BY Draconis, a prototype of a class of late-type, active, spotted flare…

太阳与恒星天体物理 · 物理学 2015-05-30 K. G. Hełminiak , M. Konacki , M. W. Muterspaugh , S. E. Browne , A. W. Howard , S. R. Kulkarni

The problem of super-resolution is concerned with the reconstruction of temporally/spatially localized events (or spikes) from samples of their convolution with a low-pass filter. Distinct from prior works which exploit sparsity in…

信号处理 · 电气工程与系统科学 2023-03-06 Pulak Sarangi , Ryoma Hattori , Takaki Komiyama , Piya Pal

We investigate theoretically coherent detection implemented simultaneously on a set of mutually orthogonal spatial modes in the image plane as a method to characterize properties of a composite thermal source below the Rayleigh limit. A…

Eclipsing binary stars provide highly accurate measurements of the fundamental physical properties of stars. They therefore serve as stringent tests of the predictions of evolutionary models upon which most stellar age determinations are…

太阳与恒星天体物理 · 物理学 2009-02-17 Keivan G. Stassun , Leslie Hebb , Mercedes Lopez-Morales , Andrej Prsa

We present a new approach to constrain galaxy physical parameters from the combined interpretation of stellar and nebular emission in wide ranges of observations. This approach relies on the Bayesian analysis of any type of galaxy spectral…

宇宙学与河外天体物理 · 物理学 2015-06-03 Camilla Pacifici , Stephane Charlot , Jeremy Blaizot , Jarle Brinchmann

The precision of photometric and spectroscopic observations has been systematically improved in the last decade, mostly thanks to space-borne photometric missions and ground-based spectrographs dedicated to finding exoplanets. The field of…

We present a grism extraction package (LINEAR) designed to reconstruct one-dimensional spectra from a collection of slitless spectroscopic images, ideally taken at a variety of orientations, dispersion directions, and/or dither positions.…

天体物理仪器与方法 · 物理学 2018-02-21 R. E. Ryan , S. Casertano , N. Pirzkal

We present a detailed light curve analysis of publicly available V band observations of 62 binary stars, mostly contact binaries, obtained by the All Sky Automated Survey (ASAS)-3 project between 2000 and 2009. Eclipsing binaries are…

太阳与恒星天体物理 · 物理学 2015-05-20 Sukanta Deb , Harinder P. Singh

We construct evolutionary tracks for massive black hole binaries (MBHBs) embedded in a surrounding distribution of stars. The dynamics of the binary is evolved by taking into account the erosion of the central stellar cusp bound to the…

宇宙学与河外天体物理 · 物理学 2011-08-03 A. Sesana

Full tests to stellar models below 1 Msun have been hindered until now by the scarce number of precise measurements of the stars' most fundamental parameters: their masses and radii. With the current observational techniques, the required…

天体物理学 · 物理学 2007-05-23 Mercedes Lopez-Morales , J. Scott Shaw

The evolution of binary stellar systems involves a wide range of physical processes, many of which are not yet well understood. We aim to build a general-purpose algorithm based on inverse population synthesis techniques, able to…

Theoretical models of low-mass stars continue to be discrepant with observations when used to examine the mass-radius relationship and other physical parameters of individual stars. High-resolution spectroscopy that leads to dynamical…

Eclipsing X-ray binaries make an ideal condition to study reprocessed X-rays, as the X-rays detected during eclipse are purely reprocessed while the much brighter primary X-rays are blocked by the companion star. We carried out a…

高能天体物理现象 · 物理学 2023-08-09 Nafisa Aftab , Biswajit Paul

Some post-common-envelope binaries are binary stars with short periods that exhibit significant period variations over long observational time spans. These eclipse timing variations (ETVs) are most likely to be accounted for by the presence…

太阳与恒星天体物理 · 物理学 2024-01-29 Cristian A. Giuppone , Luciana V. Gramajo , Emmanuel Gianuzzi , Matías N. Ramos , Nicolás Cuello , Tobias C. Hinse

We study the long-term evolution of massive black hole binaries (MBHBs) at the centers of galaxies using detailed scattering experiments to solve the full three-body problem. Ambient stars drawn from a isotropic Maxwellian distribution…

天体物理学 · 物理学 2011-02-11 A. Sesana , F. Haardt , P. Madau

We report on the first ground-based measurement of the relativistic beaming effect (aka Doppler boosting). We observed the beaming effect in the detached, non-interacting eclipsing double white dwarf (WD) binary NLTT 11748. Our observations…

太阳与恒星天体物理 · 物理学 2015-05-20 Avi Shporer , David L. Kaplan , Justin D. R. Steinfadt , Lars Bildsten , Steve B. Howell , Tsevi Mazeh

Brillouin-Mandelstam scattering is one of the most accessible nonlinear optical phenomena and has been widely studied since its theoretical discovery one hundred years ago. The scattering mechanism is a three-wave-mixing process between two…