Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Discovery of carbon radio recombination lines in absorption towards cygnus A
Monthly Notices of the Royal Astronomical Society, Volume 437, No. 4, Year 2014
Notification
URL copied to clipboard!
Description
We present the first detection of carbon radio recombination line absorption along the line of sight to Cygnus A. The observations were carried out with the Low Frequency Array in the 33-57MHz range. These low-frequency radio observations provide us with a new line of sight to study the diffuse, neutral gas in our Galaxy. To our knowledge this is the first time that foreground Milky Way recombination line absorption has been observed against a bright extragalactic background source. By stacking 48 carbon α lines in the observed frequency range we detect carbon absorption with a signal-to-noise ratio of about 5. The average carbon absorption has a peak optical depth of 2 × 10-4, a line width of 10 km s-1 and a velocity of +4 kms-1 with respect to the local standard of rest. The associated gas is found to have an electron temperature Te ̃ 110K and density ne ̃ 0.06 cm-3. These properties imply that the observed carbon a absorption likely arises in the cold neutral medium of the Orion arm of the Milky Way. Hydrogen and helium lines were not detected to a 3σ peak optical depth limit of 1.5 × 10-4 for a 4 kms-1 channel width. Radio recombination lineσ aσσociated with Cygnuσ A itself were also searched for, but are not detected. We set a 3σ upper limit of 1.5 ×; 10-4 for the peak optical depth of these lines for a 4 kms-1 channel width. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society.
Authors & Co-Authors
Oonk, J. B.Raymond
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
van Weeren, Reinout J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Leiden
Sterrewacht Leiden
United States, Cambridge
Harvard-smithsonian Center for Astrophysics
Salgado, Francisco
Netherlands, Leiden
Sterrewacht Leiden
Morabito, Leah K.
Netherlands, Leiden
Sterrewacht Leiden
Tielens, Alexander Godfried Gerardus Maria
Netherlands, Leiden
Sterrewacht Leiden
R̈ottgering, Huub J.A.R.
Netherlands, Leiden
Sterrewacht Leiden
Asgekar, Ashish
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
White, Glenn J.
United Kingdom, Milton Keynes
The Open University
United Kingdom, Didcot
Ral Space
Alexov, Anastasia
United States, Baltimore
Space Telescope Science Institute
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Anderson, James M.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Avruch, Ian Max
Netherlands, Utrecht
Sron Netherlands Institute for Space Research
Batejat, Fabien
Sweden, Onsala
Onsala Space Observatory
Beck, Rainer
Germany, Bonn
Max Planck Institute for Radio Astronomy
Bell, Martin E.
Australia, Sydney
The University of Sydney
van Bemmel, Ilse M.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Bentum, Mark J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Bernardi, Gianni
South Africa, Grahamstown
Rhodes University
South Africa, Pinelands
Square Kilometre Array, South Africa
Best, Phillip N.
United Kingdom, Edinburgh
University of Edinburgh, Institute for Astronomy
Bonafede, Annalisa
Germany, Hamburg
Universität Hamburg
Breitling, Frank
Germany, Potsdam
Leibniz Institute for Astrophysics Potsdam
Brentjens, Michiel A.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Broderick, Jess W.
United Kingdom, Southampton
University of Southampton
Brüggen, Marcus
Germany, Hamburg
Universität Hamburg
Butcher, Harvey R.
Australia, Canberra
Australian National University, Mount Stromlo Observatory
Ciardi, Benedetta
Germany, Garching Bei Munchen
Max Planck Institute for Astrophysics
Conway, John E.
Sweden, Onsala
Onsala Space Observatory
Corstanje, Arthur
Netherlands, Nijmegen
Radboud Universiteit
De Gasperin, Francesco
Germany, Hamburg
Universität Hamburg
de Geus, Eugène J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
de Vos, Marco
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Duscha, Sven
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Eislöffel, Jochen
Germany, Camburg
Thüringer Landessternwarte Tautenburg
Engels, Dieter
Germany, Hamburg
Universität Hamburg
van Enst, J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Falcke, Heino D.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Nijmegen
Radboud Universiteit
Fallows, Richard A.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Fender, Robert P.
United Kingdom, Southampton
University of Southampton
Ferrari, Chiara
France, Nice
Laboratoire Joseph-louis Lagrange
Frieswijk, Wilfred W.F.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Garrett, Michael A.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Leiden
Sterrewacht Leiden
Griemeier, J. M.
France, Orleans
Laboratoire de Physique et de Chimie de L'environnement et de L'espace Lpc2e
Hamaker, Johan P.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Hassa, T. E.
Australia, Sydney
The University of Sydney
United Kingdom, Southampton
University of Southampton
United Kingdom, Manchester
The University of Manchester
Heald, George H.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Hessels, Jason W.T.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Hoeft, Matthias
Germany, Camburg
Thüringer Landessternwarte Tautenburg
Horneffer, Andreas
Germany, Bonn
Max Planck Institute for Radio Astronomy
van der Horst, Alexander J.
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Iacobelli, Marco
Netherlands, Leiden
Sterrewacht Leiden
Jackson, Neal J.F.
United Kingdom, Manchester
The University of Manchester
Juette, E.
Germany, Bochum
Ruhr-universitat Bochum
Karastergiou, Aris
United Kingdom, Oxford
University of Oxford
Klijn, W. F.A.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Köhler, Jess
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kondratiev, Vladislav I.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Russian Federation, Moscow
P.n. Lebedev Physical Institute of the Russian Academy of Sciences
Kramer, Michael
Germany, Bonn
Max Planck Institute for Radio Astronomy
United Kingdom, Manchester
The University of Manchester
Kuniyoshi, Masaya
Germany, Bonn
Max Planck Institute for Radio Astronomy
Kuper, G.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
van Leeuwen, Joeri
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
United Kingdom, Southampton
University of Southampton
Maat, Peter D.H.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
MacArio, Giulia
France, Nice
Laboratoire Joseph-louis Lagrange
Mann, Gottfried J.
Germany, Potsdam
Leibniz Institute for Astrophysics Potsdam
Markoff, Sera B.
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
McKean, John P.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Mevius, M.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Groningen
Kapteyn Instituut
Miller-Jones, James C.A.
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Australia, Perth
Curtin University
Mol, Jacob David
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Mulcahy, D. D.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Munk, H.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Norden, Menno J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Orrú, Emanuela
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Paas, Harm
Netherlands, Groningen
Rijksuniversiteit Groningen
Pandey-Pommier, Mamta
France, Saint-genis-laval
Observatoire de Lyon
Pandey, Vishhambhar N.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Pizzo, Roberto F.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Polatidis, Antonios G.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Reich, Wolfganga
Germany, Bonn
Max Planck Institute for Radio Astronomy
Scaife, Anna M.M.
United Kingdom, Southampton
University of Southampton
Schoenmakers, Arno P.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Schwarz, Dominik J.
Germany, Bielefeld
Universität Bielefeld
Shulevski, Aleksandar
Netherlands, Groningen
Kapteyn Instituut
Sluman, J. J.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Smirnov, Oleg M.
South Africa, Grahamstown
Rhodes University
South Africa, Pinelands
Square Kilometre Array, South Africa
Sobey, Charlotte A.
Germany, Bonn
Max Planck Institute for Radio Astronomy
Stappers, Benjamin W.
United Kingdom, Manchester
The University of Manchester
Steinmetz, Matthias
Germany, Potsdam
Leibniz Institute for Astrophysics Potsdam
Swinbank, John D.
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Tagger, Michel
France, Orleans
Laboratoire de Physique et de Chimie de L'environnement et de L'espace Lpc2e
Tang, Y.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Tasse, Cyril
France, Paris
L'observatoire de Paris
Ter-Veen, Sander
Netherlands, Nijmegen
Radboud Universiteit
Thoudam, Satyendra
Netherlands, Nijmegen
Radboud Universiteit
Toribio, C.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
van Nieuwpoort, Rob V.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Netherlands, Amsterdam
Netherlands Escience Center
Vermeulen, René C.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Vocks, Christian
Germany, Potsdam
Leibniz Institute for Astrophysics Potsdam
Vogt, Corina
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Wijers, Ralph A.M.J.
Netherlands, Amsterdam
Anton Pannekoek Instituut Voor Sterrenkunde
Wise, Michael W.
Netherlands, Dwingeloo
Netherlands Foundation for Research in Astronomy
Wucknitz, Olaf
Germany, Bonn
Max Planck Institute for Radio Astronomy
Germany, Bonn
Universität Bonn
Statistics
Citations: 100
Authors: 100
Affiliations: 35
Identifiers
Doi:
10.1093/mnras/stt2158
ISSN:
00358711
e-ISSN:
13652966
Research Areas
Environmental