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相关论文: MRC B0319-454: Probing the large-scale structure w…

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We present a comparison of the properties of a giant radio galaxy and the ambient intergalactic medium, whose properties are inferred from the large-scale distribution in galaxies. The double lobes of the radio galaxy MSH 05-22 are…

天体物理学 · 物理学 2009-11-13 Ravi Subrahmanyan , Lakshmi Saripalli , Vicky Safouris , Richard W. Hunstead

We test the hypothesis that environments play a key role in enabling the growth of enormous radio structures spanning more than 700 kpc, an extreme population of radio galaxies called giant radio galaxies (GRGs). To achieve this, we explore…

星系天体物理 · 物理学 2021-02-17 Ting-Wen Lan , J. Xavier Prochaska

This review discusses three ways in which radio galaxies and other high-redshift objects can give us information on the nature and statistics of cosmological inhomogeneities, and how they have evolved between high redshift and the present:…

天体物理学 · 物理学 2007-05-23 J. A. Peacock

Radio galaxies are uniquely useful as probes of large-scale structure as their uniform identification with giant elliptical galaxies out to high redshift means that the evolution of their bias factor can be predicted. As the initial stage…

天体物理学 · 物理学 2009-10-31 Mark Lacy

Studying the interplay between massive star formation and the interstellar medium (ISM) is paramount to understand the evolution of galaxies. Radio continuum (RC) emission serves as an extinction-free tracer of both massive star formation…

The question of whether and how the properties of radio galaxies (RGs) are connected with the large-scale environment is still an open issue. For this work we measured the large-scale galaxies' density around RGs present in the revised…

星系天体物理 · 物理学 2024-02-22 Samantha Casadei , Alessandro Capetti , Claudia M. Raiteri , Francesco Massaro

We have carried out optical spectroscopy with the Anglo-Australian Telescope for 24,726 objects surrounding a sample of 19 Giant Radio Galaxies (GRGs) selected to have redshifts in the range 0.05 to 0.15 and projected linear sizes from 0.8…

星系天体物理 · 物理学 2015-02-16 J. M. Malarecki , D. H. Jones , L. Saripalli , L. Staveley-Smith , R. Subrahmanyan

We examine the redshift evolution of density environments around 2,163 radio galaxies with the stellar masses of $\sim10^{9}-10^{12} M_\odot$ between redshifts of $z=0.3-1.4$, based on the Hyper Suprime-Cam Subaru Strategic Program…

Giant radio sources form the linear size extreme of the extra-galactic radio source population. Using the WENSS survey, we have selected a complete sample of these sources. We have investigated the properties of their radio structures. We…

The high surface-brightness sensitivity of the GLEAM survey image of the giant radio galaxy GRG 0503-28 at 70-230 MHz has revealed an inversion-symmetric bending of its two lobes, while maintaining between their bent portions a ~200 kpc…

星系天体物理 · 物理学 2022-04-27 Pratik Dabhade , Gopal-Krishna

We report results from XMM-Newton and Chandra observations of the nearby (z = 0.067) giant radio galaxy 3C 35. We find evidence for an X-ray emitting gas belt, orthogonal to and lying between the lobes of 3C 35, which we interpret as…

宇宙学与河外天体物理 · 物理学 2013-02-28 Elizabeth J. A. Mannering , Diana M. Worrall , Mark Birkinshaw

Sensitive images of low-level, Mpc-sized radio cocoons offer new opportunities to probe large scale intergalactic gas flows outside clusters of galaxies. New radio images of high surface brightness sensitivity at strategically chosen…

Radio galaxies are excellent at tracing large-scale structure due to their high bias. We present new results from the TONS08 radio galaxy redshift survey. We find unequivocal evidence for a huge (at least 80 x 80 x 100 Mpc^3)…

天体物理学 · 物理学 2009-11-07 Kate Brand , Steve Rawlings , Gary J. Hill , Mark Lacy

We present unequivocal evidence for a huge (~80 x 100 x 100 Mpc^3) super-structure at redshift z=0.27 in the 3-D distribution of radio galaxies from the TONS08 sample, confirming tentative evidence for such a structure from the 7C redshift…

天体物理学 · 物理学 2009-11-07 Kate Brand , Steve Rawlings , Gary J. Hill , Mark Lacy , Ewan Mitchell , Joe Tufts

Context: Giant radio galaxies (with projected linear size of radio structure larger than 0.7 Mpc) are very rare and unusual objects. Only $\sim$5% of extended radio sources reach such sizes. Understanding of the processes responsible for…

星系天体物理 · 物理学 2019-04-24 Agnieszka Kuźmicz , Bożena Czerny , Conor Wildy

Giant radio galaxies (GRGs), with linear sizes larger than 1 Mpc (H0=50 km/s/Mpc), represent the biggest single objects in the Universe. GRGs are rare among the entire population of radio galaxies (RGs) and their physical evolution is not…

天体物理学 · 物理学 2017-08-23 M. Jamrozy , U. Klein , J. Machalski , K. -H. Mack

High-redshift radio galaxies can provide insights into the structure formation and galaxy evolution at earlier cosmological epochs. TGSSJ1530+1049 was selected as a candidate high-redshift radio galaxy. Subsequent observations with the…

We study the morphology of the radio emission of giant radio galaxies (GRGs), a rare type of active galaxies, in order to find new clues for the reasons of their large size. Using radio images from two sky surveys at 1.4 GHz we quantified…

星系天体物理 · 物理学 2016-10-11 Elizabeth López Vázquez , Heinz Andernach

We have formed a complete sample of 26 low redshift (z < 0.3) giant radio galaxies (GRGs) from the WENSS survey, selected at flux densities above 1 Jy at 325 MHz. We present 10.5-GHz observations with the 100-m Effelsberg telescope of 18…

天体物理学 · 物理学 2009-10-31 A. P. Schoenmakers , K. -H. Mack , A. G. de Bruyn , H. J. A. Rottgering , U. Klein , H. van der Laan

In our previous analysis we investigated the large-scale environment of two samples of radio galaxies (RGs) in the local Universe (i.e. with redshifts z<0.15), classified as FR I and FR II on the basis of their radio morphology. The…

高能天体物理现象 · 物理学 2020-04-16 F. Massaro , A. Capetti , A. Paggi , R. D. Baldi , A. Tramacere , I. Pillitteri , R. Campana , A. Jimenez-Gallardo , V. Missaglia
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