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We performed a radio recombination line (RRL) survey to construct a high-mass star-forming region (HMSFR) sample in the Milky Way based on the all-sky Wide-Field Infrared Survey Explorer ($\textit{All-WISE}$) point source catalog. The…

Astrophysics of Galaxies · Physics 2020-05-06 Hong-Ying Chen , Xi Chen , Jun-Zhi Wang , Zhi-Qiang Shen , Kai Yang

More than 90% of the known Milky Way supernova remnants are within 5 degrees of the Galactic Plane. We present the discovery of the supernova remnant G181.1+9.5, a new high-latitude SNR, serendipitously discovered in an ongoing survey of…

High Energy Astrophysical Phenomena · Physics 2017-01-18 R. Kothes , P. Reich , T. J. Foster , W. Reich

The radio continuum emission from the Galaxy has a rich mix of thermal and non-thermal emission. This very richness makes their interpretation challenging since the low radio opacity means that a radio image represents the sum of all…

Instrumentation and Methods for Astrophysics · Physics 2011-06-17 S. Bhatnagar , U. Rau , D. A. Green , M. P. Rupen

We aim at clarifying the nature of the emission of two spatially related unidentified X-ray sources detected with XMM-Newton telescope at intermediate-low Galactic latitude. Observations reveal a point-like source aligned with elongated…

High Energy Astrophysical Phenomena · Physics 2015-11-25 Federico García , Jorge A. Combi , María C. Medina , Gustavo E. Romero

We have carried out high resolution observations with Atacama Large Millimeter/Submillimeter Array (ALMA) of continuum emission from Orion KL region. We identify 11 compact sources at ALMA band 6 (245 GHz) and band 7 (339 GHz), including…

Solar and Stellar Astrophysics · Physics 2015-06-23 Tomoya Hirota , Mi Kyoung Kim , Yasutaka Kurono , Mareki Honma

We present a catalogue of point-source Halpha emission line objects selected from the INT/WFC Photometric H$\alpha$ Survey of the Northern Galactic Plane (IPHAS). The catalogue covers the magnitude range 13 < r' < 19.5 and includes northern…

Astrophysics · Physics 2009-11-13 A. R. Witham , C. Knigge , J. E. Drew , R. Greimel , D. Steeghs , B. T. Gaensicke , P. J. Groot , A. Mampaso

We report the results of a survey of low mass Class I protostars in the cm continuum. In the initial survey, seven sources in the Taurus star formation were observed with the VLA at 0``.25 resolution. All seven sources drive CO outflows and…

Astrophysics · Physics 2015-06-24 P. W. Lucas , Katherine M. Blundell , P. F. Roche

We present a detailed characterization of the population of compact radio-continuum sources in W51 A using subarcsecond VLA and ALMA observations. We analyzed their 2-cm continuum, the recombination lines (RL's) H77$\alpha$ and H30$\alpha$,…

Astrophysics of Galaxies · Physics 2020-08-26 Rudy Rivera-Soto , Roberto Galván-Madrid , Adam Ginsburg , Stan Kurtz

We report the analysis of deep radio observations of the interacting galaxy system M51 from the Very Large Array, with the goal of understanding the nature of the population of compact radio sources in nearby spiral galaxies. We detect 107…

Astrophysics · Physics 2008-11-26 L. A. Maddox , J. J. Cowan , R. E. Kilgard , E. Schinnerer , C. J. Stockdale

We report on Chandra observations of 18 hard X-ray (>20 keV) sources discovered with the INTEGRAL satellite near the Galactic plane. For 14 of the INTEGRAL sources, we have uncovered one or two potential Chandra counterparts per source.…

High Energy Astrophysical Phenomena · Physics 2015-06-05 John A. Tomsick , Arash Bodaghee , Sylvain Chaty , Jerome Rodriguez , Farid Rahoui , Jules Halpern , Emrah Kalemci , Mehtap Ozbey Arabaci

We investigate the contribution of extended radio sources such as Centaurus A, and Galactic supernova remnants (SNRs) to our ability to detect the statistical $21\,\rm{cm}$ signal from the Epoch of Reionisation (EoR) with the Murchison…

Cosmology and Nongalactic Astrophysics · Physics 2022-05-25 J H. Cook , C. M. Trott , J. L. B. Line

We present a 21-cm emission-absorption study towards extragalactic sources in the Canadian Galactic Plane Survey (CGPS). We have analyzed HI spectra towards 437 sources with S > 150 mJy, giving us a source density of 0.6 sources per square…

Astrophysics · Physics 2009-11-10 S. T. Strasser , A. R. Taylor

We present the first high-resolution, high-frequency radio continuum survey that fully maps an extragalactic deep field: the 10GHz survey of the Great Observatories Origins Deep Survey-North (GOODS-N) field. This is a Large Program of the…

Blazars are the dominant type of extragalactic sources at microwave and at $\gamma$-ray energies. In the most energetic part of the electromagnetic spectrum (E>100GeV) a large fraction of high Galactic latitude sources are blazars of the…

High Energy Astrophysical Phenomena · Physics 2015-06-24 B. Arsioli , B. Fraga , P. Giommi , P. Padovani , P. M. Marrese

An extremely deep X-ray survey (about 1 Ms) of the Hubble Deep Field North and its environs (about 450 arcmin^2) has been performed with the Advanced CCD Imaging Spectrometer on board the Chandra X-ray Observatory. This is one of the two…

Cheung identified a sample of 100 candidate X-shaped radio galaxies using the NRAO FIRST survey; these are small-axial-ratio extended radio sources with off-axis emission. Here we present radio images of 52 of these sources that have been…

Astrophysics of Galaxies · Physics 2015-09-16 David H. Roberts , Jake P. Cohen , Jing Lu , Lakshmi Saripalli , Ravi Subrahmanyan

The IRDC G14.225-0.506 is associated with a network of filaments, which result in two different dense hubs, as well as with several signposts of star formation activity. The aim of this work is to study the cm continuum emission to…

The results are presented of a molecular line survey to search for the spectral signature of infall towards 77 850 micron continuum sources believed to be candidate high mass protostellar objects. Up to six different transitions, HCO+ 1-0,…

Astrophysics · Physics 2009-11-11 G. A. Fuller , S. J. Williams , T. K. Sridharan

We investigate the spectral shape of the total continuum radiation, between 74 MHz and 5 GHz (400 to 6 cm in wavelength), for a large sample of bright galaxies. We take advantage of the overlapping survey coverage of the VLA Low-Frequency…

Astrophysics of Galaxies · Physics 2015-06-22 Joshua Marvil , Frazer Owen , Jean Eilek
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