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相关论文: Current status of the CATS database

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The Chandra data archive after eight years' accumulation is a treasure for various studies, and in this paper we exploit this valuable resource to study the X-ray point source populations in nearby galaxies. By December 14, 2007, 383…

天体物理学 · 物理学 2011-03-04 Jifeng Liu

We describe the procedure of the construction of a sample of distant ($z>0.3$) radio galaxies using the NED, CATS and SDSS databases for further use in various statistical tests. We believe the sample to be free of objects with quasar…

宇宙学与河外天体物理 · 物理学 2015-05-14 M. L. Khabibullina , O. V. Verkhodanov

The world astronomical image archives represent huge opportunities to time-domain astronomy sciences and other hot topics such as space defense, and astronomical observatories should improve this wealth and make it more accessible in the…

天体物理仪器与方法 · 物理学 2019-12-18 Ovidiu Vaduvescu , Lucian Curelaru , Marcel Popescu

The Evolutionary Map of the Universe (EMU) survey with ASKAP is transforming our understanding of radio galaxies, AGN duty cycles, and cosmic structure. EMUCAT efficiently identifies compact radio sources, yet struggles with extended…

天体物理仪器与方法 · 物理学 2025-06-23 Hongming Tang , Eleni Vardoulaki , RGZ EMU collaboration

Radio telescopes observe extremely faint emission from astronomical objects, ranging from compact sources to large scale structures that can be seen across the whole sky. Satellites actively transmit at radio frequencies (particularly at…

天体物理仪器与方法 · 物理学 2025-04-17 M. Peel , S. Eggl , M. L. Rawls , H. Qiu , D. L. Clements

We present a catalog of 47 wide-angle tailed radio galaxies (WATs), the WATCAT; these galaxies were selected by combining observations from the National Radio Astronomy Observatory/Very Large Array Sky Survey (NVSS), the Faint Images of the…

高能天体物理现象 · 物理学 2019-06-05 V. Missaglia , F. Massaro , A. Capetti , M. Paolillo , R. P. Kraft , R. D. Baldi , A. Paggi

Technology has advanced to the point that it is possible to image the entire sky every night and process the data in real time. The sky is hardly static: many interesting phenomena occur, including variable stationary objects such as stars…

天体物理仪器与方法 · 物理学 2018-05-23 J. L. Tonry , L. Denneau , A. N. Heinze , B. Stalder , K. W. Smith , S. J. Smartt , C. W. Stubbs , H. J. Weiland , A. Rest

Context. Stellar bow shocks have been studied not only observationally, but also theoretically since the late 1980s. Only a few catalogues of them exist. The bow shocks show emission along all the electromagnetic spectrum, but they are…

太阳与恒星天体物理 · 物理学 2015-06-03 C. S. Peri , P. Benaglia , N. L. Isequilla

Almost every star in our Galaxy is likely to harbor a terrestrial planet, but accurate measurements of an exoplanet's mass and radius demands accurate knowledge of the properties of its host star. The imminent TESS and CHEOPS missions are…

In this paper we report on the fourth soft gamma-ray source catalog obtained with the IBIS gamma-ray imager on board the INTEGRAL satellite. The scientific dataset is based on more than 70Ms of high quality observations performed during the…

The Catalina Real-time Transient Survey (CRTS) currently covers 33,000 deg^2 of the sky in search of transient astrophysical events, with time baselines ranging from 10 minutes to ~7 years. Data provided by the Catalina Sky Survey provides…

宇宙学与河外天体物理 · 物理学 2015-06-03 A. J. Drake , S. G. Djorgovski , A. Mahabal , J. L. Prieto , E. Beshore , M. J. Graham , M. Catalan , S. Larson , E. Christensen , C. Donalek , R. Williams

To understand the feedback of black holes on their environment or the acceleration of ultra-high energy cosmic rays in the present cosmic epoch, a systematic, all-sky inventory of radio galaxies in the local universe is needed. Here we…

宇宙学与河外天体物理 · 物理学 2012-07-23 Sjoert van Velzen , Heino Falcke , Pim Schellart , Nils Nierstenhoefer , Karl-Heinz Kampert

The analysis of the density and brightness of big planets satellites, main asteroid belt objects, Kuiper belt objects and centaurs has been carried out as well as the analysis of suspected unseen satellites of the stars. According to the…

天体物理学 · 物理学 2007-05-23 O. V. Zakhozhay , V. A. Zakhozhay , Yu. N. Krugly

The heterogeneity of papers dealing with the discovery and characterization of exoplanets makes every attempt to maintain a uniform exoplanet catalog almost impossible. Four sources currently available online (NASA Exoplanet Archive,…

地球与行星天体物理 · 物理学 2020-02-06 Eleonora Alei , Riccardo Claudi , Andrea Bignamini , Marco Molinaro

We present catalogues of discrete, compact radio sources in and around the discs of 35 edge-on galaxies in the Continuum Halos in Nearby Galaxies -- an EVLA Survey (CHANG-ES). The sources were extracted using the PyBDSF program at both 1.6…

Archival data have been combined with recent observations of the Galactic plane using the Very Large Array to create new catalogs of compact centimetric radio sources. The 20 cm source catalog covers a longitude range of -20 deg < l < 120…

天体物理学 · 物理学 2008-11-26 Richard L. White , Robert H. Becker , David J. Helfand

We present an updated catalog of sources detected by the Mikhail Pavlinsky ART-XC telescope aboard the Spektrum-Roentgen-Gamma (SRG) observatory during its all-sky survey. It is based on the data of the first four and the partially…

We report radio SETI observations on a large number of known exoplanets and other nearby star systems using the Allen Telescope Array (ATA). Observations were made over about 19000 hours from May 2009 to Dec 2015. This search focused on…

We use two independent methods to reduce the data of the surveys made with RATAN-600 radio telescope at 7.6 cm in 1988-1999 at the declination of the SS433 source. We also reprocess the data of the "Cold" survey (1980-1981). The resulting…

宇宙学与河外天体物理 · 物理学 2010-03-10 N. S. Soboleva , E. K. Majorova , O. P. Zhelenkova , A. V. Temirova , N. N. Bursov

Here I will review the high time resolution radio sky, focusing on millisecond scales. This is primarily occupied by neutron stars, the well-known radio pulsars and the recently identified group of transient sources known as Rotating RAdio…

太阳与恒星天体物理 · 物理学 2010-08-24 E. F. Keane