中文
相关论文

相关论文: Hard X-ray luminosity functions of cataclysmic var…

200 篇论文

Although a large number of orbital periods of cataclysmic variable stars (CVs) have been measured, comparison of period and luminosity distributions with evolutionary theory is affected by strong selection effects. A test has been…

天体物理学 · 物理学 2009-11-07 R. C. North , T. R. Marsh , U. Kolb , V. S. Dhillon , C. K. J. Moran

Radio emission from non-magnetic cataclysmic variables (CVs, accreting white dwarfs) could allow detailed studies of outflows and possibly accretion flows in these nearby, numerous and non-relativistic compact accretors. Up to now, however,…

In this study, the distances of stellar systems classified as cataclysmic variables in the literature were determined by using the distance compiled from Bailer-Jones et al. (2021). The spatial distributions of cataclysmic variables in the…

星系天体物理 · 物理学 2025-02-14 R. Canbay

We present 22 new (+3 confirmed) cataclysmic variables (CVs) in the non core-collapsed globular cluster 47 Tucanae (47 Tuc). The total number of CVs in the cluster is now 43, the largest sample in any globular cluster so far. For the…

The increasing number of synoptic surveys made by small robotic telescopes, such as the photometric Catalina Real-Time Transient Survey (CRTS), represents a unique opportunity for the discovery of variable sources and improves the…

Highly sensitive and precise X-ray imaging from Chandra, combined with the superb spatial resolution of HST optical images, dramatically enhances our empirical understanding of compact binaries such as cataclysmic variables and low mass…

太阳与恒星天体物理 · 物理学 2015-05-20 Bruce Margon , B. Beck-Winchatz , L. Homer , D. Pooley , C. G. Bassa , S. F. Anderson , W. H. G. Lewin , F. Verbunt , A. K. H. Kong , R. M. Plotkin

The analysis of the third INTEGRAL/IBIS survey has revealed several new cataclysmic variables, most of which turned out to be intermediate polars, thus confirming that these objects are strong emitters in hard X-rays. Here we present high…

天体物理学 · 物理学 2009-11-13 R. Landi , L. Bassani , A. J. Dean , A. J. Bird , M. Fiocchi , A. Bazzano , J. A. Nousek , J. P. Osborne

The X-ray source 1RXS J180431.1-273932 has been proposed as a new member of the symbiotic X-ray binary (SyXB) class of systems, which are composed of a late-type giant that loses matter to an extremely compact object, most likely a neutron…

高能天体物理现象 · 物理学 2015-06-05 N. Masetti , A. A. Nucita , P. Parisi

We assess the contribution to the X-ray (above 2 keV) luminosity of the Milky Way from different classes of low-mass binary systems and single stars. We begin by using the RXTE Slew Survey of the sky at |b|>10 to construct an X-ray…

天体物理学 · 物理学 2009-11-11 S. Sazonov , M. Revnivtsev , M. Gilfanov , E. Churazov , R. Sunyaev

We report the results of a joint \chandra-\hst study of the X-ray binary population in the massive, high-density globular cluster NGC 6388. NGC 6388 has one of the highest predicted X-ray binary production rate of any Galactic cluster. We…

We present the first X-ray observations with the XMM-Newton and INTEGRAL satellites of the recently discovered cataclysmic variable 1RXSJ173021.5-055933, together with simultaneous UV and coordinated optical photometry aiming at…

V405 Peg is a low-luminosity cataclysmic variable (CV) that was identified as the optical counterpart of the bright, high-latitude ROSAT all-sky survey source RBS1955. The system was suspected to belong to a largely undiscovered population…

太阳与恒星天体物理 · 物理学 2015-06-18 A. D. Schwope , V. Scipione , I. Traulsen , R. Schwarz , T. Granzer , A. M. Pires , J. R. Thorstensen

The population of compact binaries in dense stellar systems is affected strongly by frequent dynamical interactions between stars and their interplay with the stellar evolution. In this contribution, we consider these effects on binaries…

天体物理学 · 物理学 2007-05-23 N. Ivanova , F. A. Rasio

The Catalina Real Time Survey (CRTS) has found over 500 cataclysmic variable (CV) candidates, most of which were previously unknown. We report here on followup spectroscopy of 36 of the brighter objects. Nearly all the spectra are typical…

太阳与恒星天体物理 · 物理学 2015-06-05 John R. Thorstensen , Julie N. Skinner

Cataclysmic variables (CVs) are tracers of dynamical evolution in globular clusters. A significant sample has been found by the relatively shallow \Halpha surveys conducted with HST thus far in just three globulars: NGC 6397 (3), NGC 6752…

天体物理学 · 物理学 2007-05-23 Jonathan E. Grindlay

A sample of Cataclysmic Variables (CVs) is presented including spectroscopically identified 380 spectra of 245 objects, of which 58 CV candidates are new discoveries. The BaggingTopPush and the Random Forest algorithms are applied to the…

太阳与恒星天体物理 · 物理学 2020-01-15 Wen Hou , A-Li Luo , Yin-Bi Li , Li Qin

Dynamical interactions in globular clusters (GCs) significantly impact the formation and evolution of binary sources, including cataclysmic variables (CVs). This study investigates the connection between dynamical states of GCs and X-ray…

高能天体物理现象 · 物理学 2024-05-30 Kwangmin Oh , Jongsuk Hong , C. Y. Hui , Sangin Kim , Mirek Giersz

We searched for infrared counterparts to the cluster of X-ray point sources discovered by Chandra in the Galactic Center Region (GCR). While the sources could be white dwarfs, neutron stars, or black holes accreting from stellar companions,…

天体物理学 · 物理学 2016-08-30 S. Laycock , J. Grindlay , M. van den Berg , P. Zhao , J. Hong , X. Koenig , E. M. Schlegel , S. E. Persson

This is the second paper of a series presenting our search for magnetic Cataclysmic Variables (mCVs) among candidates selected mostly from the Catalina Real-Time Transient Survey (CRTS). We present the identification spectra, obtained at…

Kinematical properties of CVs were investigated according to population types and orbital periods, using the space velocities computed from recently updated systemic velocities, proper motions and parallaxes. Reliability of collected space…

太阳与恒星天体物理 · 物理学 2015-06-24 T. Ak , S. Bilir , A. Özdönmez , F. Soydugan , E. Soydugan , C. Püsküllü , S. Ak , Z. Eker