Åke Hjalmarson

Professor Emeritus at Astronomy and Plasmaphysics

Source: chalmers.se

Contact Details

Publications (50)
Projects (0)

Showing 50 publications

2017

Odin observations of ammonia in the Sgr A +50 km s-1 cloud and circumnuclear disk

Aa. Sandqvist, Åke Hjalmarson, U. Frisk et al

Astronomy and Astrophysics. Vol. 599

Journal article

2016

Isotopic ratios of H, C, N, O, and S in comets C/2012 F6 (Lemmon) and C/2014 Q2 (Lovejoy)

N. Biver, R. Moreno, D. Bockelée-Morvan et al

Astronomy and Astrophysics. Vol. 589, p. Art. no. A78-

Journal article

2015

Herschel HIFI observations of the Sgr A+50 km s(-1) Cloud Deep searches for O-2 in emission and foreground absorption

A. Sandqvist, B. Larsson, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 584

Journal article

2014

HERSCHEL HIFI OBSERVATIONS OF O-2 TOWARD ORION: SPECIAL CONDITIONS FOR SHOCK ENHANCED EMISSION

Jo-Hsin Chen, Paul F. Goldsmith, Serena Viti et al

Astrophysical Journal. Vol. 793 (2), p. Article nr. 111 -

Journal article

2014

Upper limits to interstellar NH+ and para-NH2- abundances. Herschel-HIFI observations towards Sgr B2 (M) and G10.6-0.4 (W31C)

Carina Persson, Mitra Hajigholi, G.E. Hassel et al

Astronomy and Astrophysics. Vol. 567, p. Art. no. A130-

Journal article

2013

Hydroxyl, water, ammonia, carbon monoxide and neutral carbon towards the Sgr A complex: VLA, Odin and SEST observations

R. Karlsson, Aa. Sandqvist, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 554

Journal article

2012

Multi-line detection of O2 toward rho Ophiuchi A

René Liseau, P. F. Goldsmith, B. Larsson et al

Astronomy and Astrophysics. Vol. 541

Journal article

2012

HERSCHEL SEARCH FOR O-2 TOWARD THE ORION BAR *

G. J. Melnick, V. Tolls, P. F. Goldsmith et al

Astrophysical Journal. Vol. 752 (1), p. art. no. 26 (pp. 1-9)

Journal article

2012

Odin space telescope monitoring of water vapor in the stratosphere of Jupiter

T. Cavalie, N. Biver, P. Hartogh et al

Planetary and Space Science. Vol. 61 (1), p. 3-14

Journal article

2011

Herschel Measurements of Molecular Oxygen in Orion

Paul F. Goldsmith, René Liseau, Tom A. Bell et al

Astrophysical Journal. Vol. 737 (2), p. 96 (1-17)

Journal article

2011

EPOXI: Comet 103P/Hartley 2 Observations from a Worldwide Campaign

K. J. Meech, M. F. A'Hearn, J. A. Adams et al

Astrophysical Journal Letters. Vol. 734 (1)

Journal article

2011

Observational tests of interstellar methanol formation

Eva Wirström, Wolf D. Geppert, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 533

Journal article

2010

Herschel/HIFI discovery of interstellar chloronium (H2Cl+)

D. C. Lis, J. C. Pearson, D. A. Neufeld et al

Astronomy and Astrophysics. Vol. 521 (1)

Journal article

2010

The first spectral line surveys searching for signals from the dark ages

Carina Persson, R. Maoli, P. Encrenaz et al

Astronomy and Astrophysics. Vol. 515 (8)

Journal article

2010

O(18)O and C(18)O observations of rho Ophiuchi A

René Liseau, B. Larsson, Per Bergman et al

Astronomy and Astrophysics. Vol. 510 (1), p. A98 -

Journal article

2010

Ground-state ammonia and water in absorption towards Sgr B2

Eva Wirström, Per Bergman, John H Black et al

Astronomy and Astrophysics. Vol. 522 (1), p. A19, 1-9

Journal article

2010

Molekyler berättar om Universum; Onsala rymdobservatorium firar 60-årsjubileum 2009

Carina Persson, Åke Hjalmarson

Kosmos (2009), p. 31-64

Magazine article

2009

Periodic variation in the water production of comet C/2001 Q4 (NEAT) observed with the Odin satellite

N. Biver, D. Bockelée-Morvan, P. Colom et al

Astronomy and Astrophysics. Vol. 501 (1), p. 359-366

Journal article

2009

Circumstellar water vapour in M-type AGB-stars: constraints from H2O(110-101) lines obtained with Odin

Matthias Maercker, Fredrik Schöier, Hans Olofsson et al

Astronomy and Astrophysics. Vol. 494, p. 243-252

Journal article

2009

Odin blickar uppåt

Åke Hjalmarson, Aa. Sandqvist

Forskning & Framsteg (4), p. 30-34

Magazine article

2009

The chemical composition of 9P/tempel 1 from radio observations

J. Crovisier, N. Biver, D. Bockelée-Morvan et al

ESO Astrophysics Symposia. Vol. 2009, p. 243-248

Paper in proceeding

2009

Water and ammonia abundances in S140 with the Odin satellite

Carina Persson, Michael Olberg, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 2 (494), p. 637-646

Journal article

2009

Odin observations of water in molecular outflows and shocks

Per Bjerkeli, René Liseau, Michael Olberg et al

Astronomy and Astrophysics. Vol. 507 (3), p. 1455-1466

Journal article

2008

Organic Molecules in the spectral line survey of Orion KL with the Odin Satellite from 486-492 GHz and 541-577 GHz

N. Koning, S. Kwok, P. Bernath et al

in Proceedings of "Organic Matter in Space", Hong Kong Feb. 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandfjord, Cambridge University Press, p. 29-30

Other conference contribution

2008

Observational constraints on the formation of interstellar methanol

Eva Wirström, Carina Persson, Åke Hjalmarson et al

in Proceedings of "Organic Matter in Space", Hong Kong Feb. 18-22, 2008, IAU symposium 251, eds. S. Kwok, S. Sandfjord, Cambridge University Press, p. 143-144

Other conference contribution

2008

From Molecular Oxygen to Primordial Molecules with the Odin Satellite

Carina Persson, P. Encrenaz, Åke Hjalmarson et al

Proceedings in Astronomical Society of the Pacific Conference Series "Frontiers of Astronomy", NRAO 50th Anniversary Science Symposium, eds. A. Bridle, J. Condon and G. Hunt.. Vol. 395, p. 378-

Other conference contribution

2008

Observation of water vapor in the stratosphere of Jupiter with the Odin space telescope

T. Cavalie, F. Billebaud, N. Biver et al

Planetary and Space Science. Vol. 56 (12), p. 1573-1584

Journal article

2008

Odin observations of the Galactic centre in the 118-GHz band. Upper limit to the 02 abundance

Aa. Sandqvist, B. Larsson, Åke Hjalmarson et al

Astronomy & Astrophysics. Vol. 482, p. 849-853

Journal article

2007

Radio observations of Comet 9P/Tempel 1 before and after Deep Impact

N. Biver, D. Bockelée-Morvan, J. Boissier et al

Icarus. Vol. 191 (2), p. 494-512

Journal article

2007

A search for pre-biotic molecules in hot cores

Eva Wirström, Per Bergman, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 473, p. 177-180

Journal article

2007

Submillimetre observations of comets with Odin: 2001 - 2005

N. Biver, D. Bockelée-Morvan, J. Crovisier et al

Planetary and Space Science. Vol. 55, p. 1058-1068

Journal article

2007

A spectral line survey of Orion KL in the bands 486-492 and 541-577 GHz with the Odin satellite. I. The observational data

Henrik Olofsson, Carina Persson, N. Koning et al

Astronomy and Astrophysics. Vol. 476 (number 2, December III), p. 791-806

Journal article

2007

Upper limits to the water abundance in starburst galaxies

C.D. Wilson, Roy Booth, Åke Olofsson et al

Astronomy & Astrophysics. Vol. 469, p. 121-124

Journal article

2007

Molecular oxygen in the p Ophiuchi cloud

B. Larsson, René Liseau, L. Pagani et al

Astronomy & Astrophysics. Vol. 466, p. 999-1003

Journal article

2007

Radio observations of Comet 9P/Tempel 1 before and after Deep Impact

N. Biver, D. Bockelée-Morvan, J. Boissier et al

Icarus. Vol. 187 (1), p. 253-271

Journal article

2007

On the progress in Odin´s hunt for molecules

Åke Hjalmarson, Michael Olberg, H.-G. Florén et al

Advances in Space Research. Vol. 40, p. 630-638

Journal article

2007

A spectral line survey of Orion KL in the bands 486-492 and 541-577 GHz with the Odin satellite. II. Data analysis

Carina Persson, Henrik Olofsson, N. Koning et al

Astronomy and Astrophysics. Vol. 476 (2, December III), p. 807-827

Journal article

2006

Observations of the Circumstellar Water 110-->101 and Ammonia 10-->00 Lines in IRC +10216 by the Odin Satellite

T.I. Hasegawa, S. Kwok, N. Koning et al

The Astrophysical Journal. Vol. 637, p. 791-797

Journal article

2006

Odin´s hunt for molecules

Åke Hjalmarson

Proceedings of "Hunt for molecules", eds. F. Combes, F. Casoli, E. Falgarone, L. Pagani, Paris, IAP, Sept. 2005, Observatoire de Paris, p. 15-26

Other conference contribution

2006

Odin spectral line observations of Sgr A and Sgr B2 at submm wavelengths and in the 118-GHz band

Aa. Sandqvist, Per Bergman, P. Bernath et al

Journal of Physics: Conference Series. Vol. 54, p. 72-76

Conference poster

2006

Life up North: Meeting Report: Nordic Astrobiology 2006: Origins & Distribution of life in the universe

A.M. Poole, T. Hode, A. Brandenburg et al

Astrobiology. Vol. 6 (6), p. 815-818

Journal article

2006

Odin * CO and 13CO J=5-4 mapping of Orion KL - a step towards accurate water abundances

Eva Wirström, Per Bergman, Henrik Olofsson et al

Astronomy & Astrophysics. Vol. 453, p. 979-987

Journal article

2005

Recent astroomy highlights from the Odin satellite

Åke Hjalmarson, Per Bergman, N. Biver et al

Advances in Space Research (a COSPAR publication). Vol. 36, p. 1031-1047

Journal article

2005

W Hya through the Eye of Odin

Kay Justtanont, Per Bergman, B. Larsson et al

Astronomy & Astrophysics. Vol. 439, p. 627-633

Journal article

2005

Wide-band observations of the 557 GHz water line in Mars with Odin

N. Biver, A. Lecacheux, P. Encrenaz et al

Astronomy & Astrophysics. Vol. 435, p. 765-772

Journal article

2005

Searching for O2 in the SMC: Constraints on Oxygen Chemistry at Low Metallicities

C.D. Wilson, Henrik Olofsson, L. Pagani et al

Astronomy & Astrophysics. Vol. 433, p. L5-L8

Journal article

2004

New Astronomy with the Odin Satellite

Åke Hjalmarson

Advanced Space Research (COSPAR) Elsevier Ltd. Vol. 34, p. 504-510

Journal article

2004

New astronomy results from the Odin satellite

Åke Hjalmarson, Michael Olberg

Proceedings of the 4th Cologne-Bonn-Zermatt-Symposium "The Dense Interstellar Medium in Galaxies", Zermatt, September 2003, p. 331-338

Other conference contribution

2003

The Odin satellite - I. Radiometer design and test

U. Frisk, MAGNE HAGSTRÖM, J. Ala-Laurinaho et al

Astronomy and Astrophysics. Vol. 402 (3), p. L27-L34

Journal article

2003

Odin water mapping in the Orion KL region

Henrik Olofsson, G. Olofsson, Åke Hjalmarson et al

Astronomy and Astrophysics. Vol. 402 (3), p. L47-L54

Journal article

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