Åke Hjalmarson

Professor Emeritus at Astronomy and Plasmaphysics

Source: chalmers.se
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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

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

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

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

Odin blickar uppåt

Åke Hjalmarson, Aa. Sandqvist
Forskning & Framsteg (4), p. 30-34
Magazine 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

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

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

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

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

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

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

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

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 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
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
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

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

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

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

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

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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