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相关论文: Large-scale magnetized outflows from the Virgo Clu…

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We present new observations at three frequencies (326 MHz, 615 MHz, and 1281 MHz) of the radio lobe spiral galaxy, NGC 3079, using the Giant Metrewave Radio Telescope. These observations are consistent with previous data obtained at other…

天体物理学 · 物理学 2009-11-10 Judith A. Irwin , D. J. Saikia

Radio observations can show how cluster galaxies are affected by various environmental factors. We made three frequency radio-polarimetric VLA observations and performed sensitive XMM-Newton observations in X-rays and UV light of NGC4254.…

天体物理学 · 物理学 2009-11-13 K. T. Chyzy , M. Ehle , R. Beck

Deep observations of 6cm polarized radio continuum emission of 8 Virgo spiral galaxies are presented. All galaxies show strongly asymmetric distributions of polarized intensity with elongated ridges located in the outer galactic disk. Such…

天体物理学 · 物理学 2009-11-13 B. Vollmer , M. Soida , R. Beck , M. Urbanik , K. Chyzy , K. Otmianowska-Mazur , J. Kenney , J. van Gorkom

We present multi-frequency, radio-continuum and HI observations of NGC4438, the highly-disturbed, active galaxy in the Virgo cluster, with the VLA and the GMRT. High-resolution observations with the VLA at 4860 and 8460 MHz show the…

天体物理学 · 物理学 2009-11-13 Ananda Hota , D. J. Saikia , Judith A. Irwin

Radio continuum observations at 20 and 6 cm of the highly inclined Virgo spiral galaxy NGC 4522 are presented. Both, 20 and 6 cm total emission distributions are asymmetric with an extended component to the west where extraplanar atomic gas…

天体物理学 · 物理学 2009-11-10 B. Vollmer , R. Beck , J. D. P. Kenney , J. H. van Gorkom

Deep 21-cm HI line observations of the Virgo cluster spiral galaxy NGC 4569 have been obtained with the VLA in its D configuration and with the Effelsberg 100-m telescope. A low surface density arm was discovered in the west of the galaxy,…

天体物理学 · 物理学 2009-11-10 B. Vollmer , C. Balkowski , V. Cayatte , W. van Driel , W. Huchtmeier

We present high-resolution ($1\farcs8$ -- $4\farcs5$) CO data of the Virgo spiral galaxy NGC 4569, obtained using the Nobeyama Millimeter Array. We found that the molecular gas is highly concentrated in the circumnuclear region with two…

天体物理学 · 物理学 2015-06-24 Hiroyuki Nakanishi , Yoshiaki Sofue , Jin Koda

We present high sensitivity radio polarimetric (VLA) observations of a galaxy with strong orbital resonances - NGC4736. The total radio intensity at 8.4GHz covers smoothly the whole galaxy bulge and reveals a distinct ring of radio emission…

天体物理学 · 物理学 2015-05-13 Krzysztof T. Chyzy , Ronald J. Buta

The pair of large radio lobes in the Virgo cluster, each about 23 kpc in radius, have curiously sharp outer edges where the radio-synchrotron continuum flux declines abruptly. However, just adjacent to this sharp transition, the radio flux…

宇宙学与河外天体物理 · 物理学 2015-05-28 William G. Mathews , Fulai Guo

A recent comparison between deep VLA HI observations and dynamical models of the Virgo cluster spiral galaxy NGC 4654 has shown that only a model involving a combination of a tidal interaction and ram pressure can reproduce the data. Deep…

天体物理学 · 物理学 2009-11-11 M. Soida , K. Otmianowska-Mazur , K. T. Chyży , B. Vollmer

We obtained using MegaCam at the CFHT a deep narrow band Halpha+[NII] wide field image of NGC 4569, the brightest late-type galaxy in the Virgo cluster. The image reveals the presence of long tails of diffuse ionised gas without any…

We observed the nearby early-type spiral galaxy NGC 4594 (M 104, Sombrero galaxy) with the Very Large Array at 4.86 GHz, with the Effelsberg 100-m telescope at 8.35 GHz as well as with the Heinrich Hertz Telescope at 345 GHz in radio…

天体物理学 · 物理学 2009-11-11 M. Krause , R. Wielebinski , M. Dumke

The Virgo cluster of galaxies provides excellent conditions for studying interactions of galaxies with the cluster environment. Both the high-velocity tidal interactions and effects of ram pressure stripping by the intracluster gas can be…

宇宙学与河外天体物理 · 物理学 2015-06-11 M. Wezgowiec , M. Urbanik , R. Beck , K. T. Chyzy , M. Soida

Because of its proximity the Virgo Cluster is an excellent target for studying interactions of galaxies with the cluster environment. Both the high-velocity tidal interactions and effects of ram pressure stripping by the intracluster gas…

天体物理学 · 物理学 2015-05-13 M. Wezgowiec , M. Urbanik , B. Vollmer , R. Beck , K. T. Chyzy , M. Soida , Ch. Balkowski

We report the detection of extended low radio frequency continuum emission beyond the optical disk of the spiral galaxy NGC 4254 using the Giant Metrewave Radio Telescope. NGC 4254, which has an almost face-on orientation, is located in the…

天体物理学 · 物理学 2009-11-13 N. G. Kantharia , A. Pramesh Rao , S. K. Sirothia

We present results from multi-frequency polarization-sensitive Very Large Array observations of the Seyfert-starburst composite galaxy NGC3079. Our sensitive radio observations reveal a plethora of radio filaments comprising the radio lobes…

星系天体物理 · 物理学 2019-10-09 Biny Sebastian , Preeti Kharb , C. P. O Dea , E. J. M. Colbert , S. A. Baum

Galaxy clusters with signs for a recent merger show in many cases extended diffuse radio features. This emission originates from relativistic electrons which suffer synchrotron losses due to the intra-cluster magnetic field. The mechanisms…

星系天体物理 · 物理学 2015-02-11 A. Drabent , M. Hoeft , R. F. Pizzo , A. Bonafede , R. J. van Weeren , U. Klein

Using observations obtained with the LOw Fequency ARray (LOFAR), the Westerbork Synthesis Radio Telescope (WSRT) and archival Very Large Array (VLA) data, we have traced the radio emission to large scales in the complex source 4C 35.06…

In order to analyze the importance of the star formation rate in generating and amplifying magnetic fields in the interstellar medium we obtained deep total power and polarization maps at 4.85 GHz of three late type spiral galaxies NGC4236,…

天体物理学 · 物理学 2009-11-11 K. T. Chyzy , D. J. Bomans , M. Krause , R. Beck , M. Soida , M. Urbanik

We report the discovery of the 10 kilo-parsec (kpc) scale radio lobes in the Sombrero galaxy (NGC 4594), using data from the Continuum Halos in Nearby Galaxies - an Expanded Very Large Array (VLA) Survey (CHANG-ES) project. We further…

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