Search for X/Z-shaped radio sources from TGSS ADR 1

Abstract

A small sub-class of radio galaxies that exhibit a pair of secondary low surface brightness radio lobes oriented at an angle to the primary high surface brightness lobes are known as X-shaped radio galaxies (XRGs). In cases, it is seen that the less luminous secondary lobes emerge from the edges of the primary high brightened lobes and give a Z-symmetric morphology. These are known as Z-shaped radio galaxies (ZRGs). From the TIFR GMRT Sky Survey at 150 MHz, we present a systematic search result for XRGs and ZRGs. We identified a total of 58 radio sources, out of which 40 are XRGs and 18 are ZRGs. Taking advantage of the large sample size of the XRGs and ZRGs reported in the current paper, different properties of XRGs and ZRGs are studied. Out of 58 XRGs and ZRGs presented in the current paper, 19 (32 per cent) are FR-I and 33 (57 per cent) are FR-II radio galaxies. For four XRGs and three ZRGs, the morphology is so complex that they could not be classified. We have estimated radio luminosity and spectral index of newly discovered winged radio galaxies and made a comparative study with previously detected XRGs and ZRGs. Most of the XRGs show a steep spectral index between 150 MHz and 1400 MHz and only 14 per cent of the sources show a flat spectrum but for ZRGs, a good fraction of the sources (36 per cent) show a flat spectrum.

References in corpus (48)

• The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-III
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• The hierarchical formation of the brightest cluster galaxies
• The GMRT 150 MHz All-sky Radio Survey: First Alternative Data Release TGSS ADR1
• SUMSS: A Wide-Field Radio Imaging Survey of the Southern Sky. II. The Source Catalogue
• The VLA Low-frequency Sky Survey
• Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: II. ~1,000,000 Quasars from Data Release Six
• The Nature and Evolution of Classical Double Radio Sources from Complete Samples
• Tracing Black Hole Mergers Through Radio Lobe Morphology
• The Dynamic Evolution of Young Extragalactic Radio Sources
• Luminosity function, sizes and FR dichotomy of radio-loud AGN
• Jet reorientation in AGN: two winged radio galaxies
• A survey of Low Luminosity Compact sources and its implication for evolution of radio-loud AGNs. I. Radio data
• FIRST `Winged' and `X'-shaped Radio Source Candidates
• Evolution of the Radio Loud Galaxy Population
• On the origin of X-shaped radio-sources: new insights from the properties of their host galaxies
• The optical morphologies of the 2Jy sample of radio galaxies: evidence for galaxy interactions
• A Chandra Study of the Multi-Component X-ray Emission from the X-shaped Radio Galaxy 3C 403
• The Lockman Hole project: LOFAR observations and spectral index properties of low-frequency radio sources
• The Origin of X-shaped Radio Galaxies: Clues from the Z-symmetric Secondary Lobes
• A new sample of large angular size radio galaxies. I. The radio data
• Structure of Brightest Cluster Galaxies and Intracluster Light
• GMRT observations of X-shaped radio sources
• The genesis of morphologies in extended radio sources: X-shapes, off-axis distortions and giant radio sources
• On the origin of X-shaped radio galaxies
• Binary black holes and tori in AGN I. Ejection of stars and merging of the binary
• Morphological Annotations for Groups in the FIRST Database
• The B3-VLA CSS sample. II: VLBA images at 18 cm
• Hydrodynamic Models of Radio Galaxy Morphology: Winged and X-shaped Sources
• Nature and evolution of powerful radio galaxies and their link with the quasar luminosity function
• VLBI observations of the CORALZ sample: young radio sources at low redshift
• Catching butterflies in the sky: Extended catalog of winged or X-shaped radio sources from the latest FIRST data release
• Multifrequency Study of The Radio Galaxy NGC326
• FIRST-based survey of Compact Steep Spectrum sources, IV. Multifrequency VLBA observations of very compact objects
• Deep GMRT 150 MHz observations of the LBDS-Lynx region: Ultra-Steep Spectrum Radio Sources
• A Selection of Giant Radio Sources from NVSS
• FIRST "Winged" and X-shaped Radio Source Candidates: II. New Redshifts
• A Deep Chandra Observation of the X-shaped Radio Galaxy 4C +00.58: A Candidate for Merger-induced Reorientation?
• Orientation and size of the `Z' in `X'-shaped radio galaxies
• FIRST winged radio galaxies with X and Z symmetry
• The B3-Vla CSS sample. III: Evn & Merlin images at 18 cm
• VLBI observations of nineteen GHz-Peaked-Spectrum radio sources at 1.6 GHz
• The Abundance of X-Shaped Radio Sources I. VLA Survey of 52 Sources With Off-Axis Distortions
• European VLBI Network observations of fourteen GHz-Peaked-Spectrum radio sources at 5 GHz
• What Are "X-Shaped" Radio Sources Telling Us? I. Very Large Array Imaging of a Large Sample of Low Axial Ratio Radio Sources
• The first kinematic determination of million-year precession period of AGNs
• Witnessing the Formation of a Brightest Cluster Galaxy in a Nearby X-ray Cluster
• Remnant radio galaxy candidates of small angular sizes

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