L
Lars E B Johansson
Researcher at Chalmers University of Technology
Publications - 59
Citations - 1628
Lars E B Johansson is an academic researcher from Chalmers University of Technology. The author has contributed to research in topics: Star formation & Molecular cloud. The author has an hindex of 23, co-authored 59 publications receiving 1574 citations. Previous affiliations of Lars E B Johansson include European Southern Observatory.
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Journal ArticleDOI
Long-term Evolution of the Outgassing of Comet Hale-Bopp From Radio Observations
N. Biver,Dominique Bockelée-Morvan,P. Colom,Jacques Crovisier,B. Germain,Emmanuel Lellouch,John K. Davies,William R. F. Dent,R. Moreno,Gabriel Paubert,J. Wink,Didier Despois,Dariusz C. Lis,D. Mehringer,Dominic J. Benford,M. Gardner,Thomas G. Phillips,M. Gunnarsson,Hans Rickman,Anders Winnberg,Per Bergman,Lars E B Johansson,Heike Rauer +22 more
TL;DR: In this article, the production rates of eight molecular species (CO, HCN, CH3OH, H2CO,H2S, CS, CH 3CN,HNC) have been monitored as a function of heliocentric distance.
Journal ArticleDOI
Molecular cloud structure in the magellanic clouds: Effect of metallicity
Soojong Pak,Soojong Pak,Soojong Pak,Daniel T. Jaffe,Daniel T. Jaffe,Ewine F. van Dishoeck,Ewine F. van Dishoeck,Lars E B Johansson,Roy Booth +8 more
TL;DR: In this article, the chemical structure of neutral clouds in low-metallicity environments is examined, with particular emphasis on the H to H2 and C+ to CO transitions.
Journal ArticleDOI
N 2 H + (1-0) survey of massive molecular cloud cores
TL;DR: In this article, the authors presented the results of N2H + (1-0) observations of 35 dense molecular cloud cores from the northern and southern hemispheres where massive stars and star clusters are formed.
Journal ArticleDOI
N2H+(1-0) survey of massive molecular cloud cores
L. E. Pirogov,Igor Zinchenko,Igor Zinchenko,Paola Caselli,Lars E B Johansson,Philip C. Myers +5 more
TL;DR: In this paper, the authors present the results of N2H+ observations of 35 dense molecular cloud cores from the northern and southern hemispheres where massive stars and star clusters are formed.
Book ChapterDOI
The 1995-2002 Long-Term Monitoring of Comet C/1995 O1 (HALE-BOPP) at Radio Wavelength
Nicolas Biver,Dominique Bockelée-Morvan,Pierre Colom,Jacques Crovisier,Florence Henry,Emmanuel Lellouch,Anders Winnberg,Lars E B Johansson,M. Gunnarsson,Hans Rickman,Fredrik T. Rantakyrö,John K. Davies,William R. F. Dent,Gabriel Paubert,Raphael Moreno,J. Wink,Didier Despois,Dominic J. Benford,M. Gardner,Dariusz C. Lis,D. Mehringer,Thomas G. Phillips,Heike Rauer +22 more
TL;DR: In this article, the authors presented the results of their observing campaign at radio wavelengths which began in August 1995 and ended in January 2002, with the telescopes of Nancay, IRAM, JCMT, CSO and, since September 1997, SEST.