Results 1 to 10 of about 544 (185)

STUDY OF EFFECTS OF LUNAR TIDAL WAVE PASSAGE IN UPPER ATMOSPHERE OF EARTH ACCORDING TO MONITORING DATA AT RADIO TELESCOPE «URAN-4» RI NANU

Odessa Astronomical Publications, 2019
The paper examines data on the effects of the lunar tidal wave in the Earth 's upper atmosphere on the observed flux of radio sources. Monitoring of the fluxes of powerful galactic and extragalactic radio sources is carried out at the URAN-4 radio ...
M. I. Ryabov, L. I. Sobitnyak
doaj   +1 more source

A Census of the Deep Radio Sky with the VLA. I. 10 GHz Survey of the GOODS-N Field

The Astrophysical Journal
We present the first high-resolution, high-frequency radio continuum survey that fully maps an extragalactic deep field: the 10 GHz survey of the Great Observatories Origins Deep Survey-North (GOODS-N) field. This is a Large Program of the Karl G. Jansky
Eric F. Jiménez-Andrade, Eric J. Murphy, Emmanuel Momjian, James J. Condon, Ranga-Ram Chary, Russ Taylor, Mark Dickinson   +6 more
doaj   +1 more source

Strange and Odd Morphology Extragalactic Radio Sources (STROMERSs): A Faint Images of the Radio Sky at Twenty-Centimeters (FIRST) Look at the Strange and Odd Radio Sources

Universe
We report the identification of an extremely rare and peculiar set of irregular radio sources, termed “STROMERSs” (STRange and Odd Morphology Extragalactic Radio Sources).ingThe irregular radio sources with very anomalous morphologies that make them ...
Soumen Kumar Bera, Tapan K. Sasmal, Soumen Mondal, Taotao Fang, Xuelei Chen   +4 more
doaj   +1 more source

A Multimechanism Hybrid Model of Peaked-spectrum Radio Sources

The Astrophysical Journal
Peaked-spectrum (PS) sources exhibit turnover characteristics in their broad radio spectra. However, the mechanism underlying this phenomenon remains elusive.
Guang-Chen Sun, Yichao Li, Furen Deng, Yanping Cong, Fangxia An, Jiajun Zhang, Yougang Wang, Xin Zhang, Xuelei Chen   +8 more
doaj   +1 more source

Constraining the Faint-end Slope of the Fast Radio Burst Energy Function Using CHIME/FRB Catalog-1 and Local Volume Galaxies

The Astrophysical Journal
Despite hundreds of detected fast radio bursts (FRBs), the faint-end slope ( γ ) of their energy distribution remains poorly constrained, hindering understanding of whether bright, cosmological FRBs and faint, Galactic magnetar SGR 1935+2154-like bursts ...
Mohit Bhardwaj, Victoria M. Kaspi, K. W. Masui, B. M. Gaensler, Adaeze L. Ibik, Mawson W. Sammons   +5 more
doaj   +1 more source

Follow-up Observations of Apparently One-off Sources from the Parkes Telescope

The Astrophysical Journal
A small fraction of fast radio bursts (FRBs) have been observed with multiple bursts, whereas most Galactic sources emitting radio pulses are known to repeat.
Songbo Zhang, Xuan Yang
doaj   +1 more source

A MeerKAT Polarization Survey of Southern Calibration Sources

The Astronomical Journal
We report on full-Stokes L -band observations of 98 MeerKAT calibration sources. Linear polarization is detected in 71 objects above a fractional level of 0.2%.
A. R. Taylor, L. S. Legodi
doaj   +1 more source

Identification of 4876 Bent-tail Radio Galaxies in the FIRST Survey Using Deep Learning Combined with Visual Inspection

The Astrophysical Journal Supplement Series
Bent-tail radio galaxies (BTRGs) are characterized by bent radio lobes. This unique shape is mainly caused by the movement of the galaxy within a cluster, during which the radio jets are deflected by the intracluster medium.
Baoqiang Lao, Heinz Andernach, Xiaolong Yang, Xiang Zhang, Rushuang Zhao, Zhen Zhao, Yun Yu, Xiaohui Sun, Sheng-Li Qin   +8 more
doaj   +1 more source

A Catalog of 971 FR I Radio Galaxies from the FIRST Survey via Hybrid Deep Learning and Ridgeline Flux Density Distribution Analysis

The Astrophysical Journal Supplement Series
We present a catalog of 971 FR I radio galaxies (FR Is) identified from the Very Large Array Faint Images of the Radio Sky at Twenty centimeters (FIRST) survey.
Baoqiang Lao, Xiaolong Yang, Wenjun Xiao, Tapan K. Sasmal, Yanli Zou, Didi Liu, Zhixian Liao, Ye Lu, Rushuang Zhao   +8 more
doaj   +1 more source

The AllWISE Catalog as an Infrared Celestial Reference Frame in the Gaia Era

The Astronomical Journal
The launch of Gaia in 2013 December ushered in a new era of space astrometry, allowing for fundamental reference research at an unprecedented level of precision.
J.-C. Liu, N. Liu, Z. Zhu, J. Yao, I. Nurul Huda, Z.-W. Wang   +5 more
doaj   +1 more source