The Astronomical Journal | VOL. 126
Read

870 Micron Observations of Nearby 3CRR Radio Galaxies

Publication Date Dec 1, 2003

Abstract

We present submillimeter continuum observations at 870 μm of the cores of low-redshift 3CRR radio galaxies, observed at the Heinrich Hertz Submillimeter Telescope. The cores are nearly flat-spectrum between the radio and submillimeter, which implies that the submillimeter continuum is likely to be synchrotron emission and not thermal emission from dust. The emitted power from nuclei detected at optical wavelengths and in the X-rays is similar in the submillimeter, optical, and X-rays. The submillimeter-to-optical and X-ray power ratios suggest that most of these sources resemble misdirected BL Lac–type objects with synchrotron emission peaking at low energies. However, we find three exceptions, the FR I galaxy 3C 264 and the FR II galaxies 3C 390.3 and 3C 338 with high X-ray–to–submillimeter luminosity ratios. These three objects are candidate misdirected high- or intermediate-energy peaked BL Lac–type objects. With additional infrared observations and from archival data, we compile spectral energy distributions for a subset of these objects. The steep dips observed near the optical wavelengths in many of these objects suggest that extinction inhibits the detection and reduces the flux of optical continuum core counterparts. High-resolution near- or mid-infrared imaging may provide better measurements of the underlying synchrotron emission peak.

Concepts

Heinrich Hertz Submillimeter Telescope BL Lac Type Objects Submillimeter Continuum Mid-infrared Imaging Emitted Power Low-redshift Radio Galaxies Optical Wavelengths Thermal Emission Archival Data Cores Of Galaxies

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Coronavirus Research Articles published between Sep 26, 2022 to Oct 02, 2022

R DiscoveryOct 03, 2022
R DiscoveryArticles Included:  5

Introduction: Test solutions (Biotrue, renu Advanced [Bausch and Lomb], ACUVUE RevitaLens [Johnson and Johnson Vision], cleadew [Ophtecs corp.] or AOS...

Read More

Good health Research Articles published between Sep 26, 2022 to Oct 02, 2022

R DiscoveryOct 03, 2022
R DiscoveryArticles Included:  2

Patient and public involvement in health care is considered indispensable in the way we conduct daily pediatric neurology practice, and in the develop...

Read More

Quality Of Education Research Articles published between Sep 26, 2022 to Oct 02, 2022

R DiscoveryOct 03, 2022
R DiscoveryArticles Included:  5

Ingenta is not the publisher of the publication content on this website. The responsibility for the publication content rests with the publishers prov...

Read More

Gender Equality Research Articles published between Sep 26, 2022 to Oct 02, 2022

R DiscoveryOct 03, 2022
R DiscoveryArticles Included:  3

Introduction: As of early March 2022, the COVID-19 pandemic has killed more 5.9 million people worldwide, and infected more than 437 million.

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.