Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Becker, Robert H."'
Autor:
Jiang, Linhua, McGreer, Ian D., Fan, Xiaohui, Strauss, Michael A., Bañados, Eduardo, Becker, Robert H., Bian, Fuyan, Farnsworth, Kara, Shen, Yue, Wang, Feige, Wang, Ran, Wang, Shu, White, Richard L., Wu, Jin, Wu, Xue-Bing, Yang, Jinyi, Yang, Qian
We present the discovery of nine quasars at z similar to 6 identified in the Sloan Digital Sky Survey (SDSS) imaging data. This completes our survey of z similar to 6 quasars in the SDSS footprint. Our final sample consists of 52 quasars at 5.7 < z <
Externí odkaz:
http://hdl.handle.net/10150/622677
http://arizona.openrepository.com/arizona/handle/10150/622677
http://arizona.openrepository.com/arizona/handle/10150/622677
Autor:
White, Richard L., Long, Knox S., Becker, Robert H., Blair, William P., Helfand, David J., Winkler, P. Frank
We have performed new 1.4 GHz and 5 GHz observations of the Local Group galaxy M33 with the Jansky Very Large Array. Our survey has a limiting sensitivity of 20 uJy (4-sigma) and a resolution of 5.9 arcsec (FWHM), corresponding to a spatial resolutio
Externí odkaz:
http://arxiv.org/abs/1903.04434
Autor:
Shen, Lu, Tomczak, Adam R., Lemaux, Brian C., Pelliccia, Debora, Lubin, Lori M., Miller, Neal A., Perrotta, Serena, Fassnacht, Christopher D., Becker, Robert H., Gal, Roy R., Wu, Po-Feng, Squires, Gordon
Using 57 Radio Active Galactic nuclei (RAGN) at 0.55 $\leq$ z $\leq$ 1.3 drawn from five fields of the Observations of Redshift Evolution in Large Scale Environments (ORELSE) survey, we study the effect of injection of energy from outbursts of RAGN o
Externí odkaz:
http://arxiv.org/abs/1812.04667
The Properties of Radio Galaxies and the Effect of Environment in Large Scale Structures at $z\sim1$
Autor:
Shen, Lu, Miller, Neal A., Lemaux, Brian C., Tomczak, Adam R., Lubin, Lori M., Rumbaugh, Nicholas, Fassnacht, Christopher D., Becker, Robert H., Gal, Roy R., Wu, Po-Feng., Squires, Gordon
In this study we investigate 89 radio galaxies that are spectroscopically-confirmed to be members of five large scale structures in the redshift range of $0.65 \le z \le 0.96$. Based on a two-stage classification scheme, the radio galaxies are classi
Externí odkaz:
http://arxiv.org/abs/1708.02251
Autor:
Jiang, Linhua, McGreer, Ian D., Fan, Xiaohui, Strauss, Michael A., Banados, Eduardo, Becker, Robert H., Bian, Fuyan, Farnsworth, Kara, Shen, Yue, Wang, Feige, Wang, Ran, Wang, Shu, White, Richard L., Wu, Jin, Wu, Xue-Bing, Yang, Jinyi, Yang, Qian
We present the discovery of nine quasars at $z\sim6$ identified in the Sloan Digital Sky Survey (SDSS) imaging data. This completes our survey of $z\sim6$ quasars in the SDSS footprint. Our final sample consists of 52 quasars at $5.7
Externí odkaz:
http://arxiv.org/abs/1610.05369
The FIRST survey, begun over twenty years ago, provides the definitive high-resolution map of the radio sky. This VLA survey reaches a 20cm detection sensitivity of 1 mJy over 10,575 deg**2 largely coincident with the SDSS area. Images and a catalog
Externí odkaz:
http://arxiv.org/abs/1501.01555
We report on a blind survey for extragalactic radio variability that was carried out by comparing two epochs of data from the FIRST survey with a third epoch from a new 1.4 GHz survey of SDSS Stripe 82. The three epochs are spaced seven years apart a
Externí odkaz:
http://arxiv.org/abs/1304.3463
We present measurements of a population of matched radio sources at 1.4 and 5 GHz down to a flux limit of 1.5 mJy in 7 sq. degs. of the NOAO Deep Field South. We find a significant fraction of sources with inverted spectral indices that all have 1.4
Externí odkaz:
http://arxiv.org/abs/1203.3809
Publikováno v:
2011, ApJ, 742, 49 & 2012, ApJ, 746, 114
A comprehensive search for variable and transient radio sources has been conducted using ~55,000 snapshot images of the FIRST survey. We present an analysis leading to the discovery of 1,627 variable and transient objects down to mJy levels over a wi
Externí odkaz:
http://arxiv.org/abs/1107.5901
Autor:
Zeimann, Gregory R., White, Richard L., Becker, Robert H., Hodge, Jacqueline A., Stanford, Spencer A., Richards, Gordon T.
We present the discovery of only the second radio-selected, z ~ 6 quasar. We identified SDSS J222843.54+011032.2 (z=5.95) by matching the optical detections of the deep Sloan Digital Sky Survey (SDSS) Stripe 82 with their radio counterparts in the St
Externí odkaz:
http://arxiv.org/abs/1105.2047