Cathy Horellou

Biträdande professor at Space, Earth and Environment, Astronomy and Plasmaphysics, Extragalactic Astrophysics

Cathy works on galaxies and clusters of galaxies. She is interested in clusters as such, but also as cosmological probes. Her expertise is in the submm-to-radio part of the electromagnetic spectrum. Such observations reveal the physical conditions of galaxies and of the intra-cluster plasma. She also has a strong interest in theory and modeling - see her recent paper on helical magnetic fields. Since April 2014 Cathy is the Director of the Master's program in Physics and Astronomy at Chalmers and of the corresponding Master's program in Physics at Gothenburg University.

Source: chalmers.se

Projects

2010–2010

Arrays of Ultrasensitive Cold-Electron Bolometers for High-Performance Cosmology Instruments

Cathy Horellou Radio Astronomy and Astrophysics
Swedish National Space Board

2010–2013

Galaxy clusters, submillimeter galaxies and cosmology with APEX

Cathy Horellou Radio Astronomy and Astrophysics
Swedish Research Council (VR)

There might be more projects where Cathy Horellou participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2017

The LOFAR Two-metre Sky Survey: I. Survey description and preliminary data release

D. J. Schwarz, M. Haverkorn, Cathy Horellou et al
Astronomy and Astrophysics. Vol. 598, p. Art no A104-
Journal article
2017

Faraday tomography of the local interstellar medium with LOFAR: Galactic foregrounds towards IC 342∗

Ivan Marti-Vidal, M. Iacobelli, A. G. de Bruyn et al
Astronomy and Astrophysics. Vol. 597, p. A98-
Journal article
2017

The XXL survey: First results and future

M.J. Jarvis, Y. Dubois, F. Durret et al
Astronomische Nachrichten. Vol. 338 (2-3), p. 334-341
Journal article
2016

Subarcsecond international LOFAR radio images of Arp 220 at 150 MHz: A kpc-scale star forming disk surrounding nuclei with shocked outflows

Tova M. Yoast-Hull, John Conway, Cathy Horellou et al
Astronomy and Astrophysics. Vol. 593, p. A86-
Journal article
2016

LOFAR Facet Calibration

Cathy Horellou, W. R. Forman, S. S. Sridhar et al
Astrophysical Journal, Supplement Series. Vol. 223 (1)
Journal article
2016

A plethora of diffuse steep spectrum radio sources in Abell 2034 revealed by LOFAR

D. N. Hoang, G. H. Heald, E. Orru et al
Monthly Notices of the Royal Astronomical Society. Vol. 459 (1), p. 277-290
Journal article
2016

LOFAR, VLA, AND CHANDRA OBSERVATIONS OF THE TOOTHBRUSH GALAXY CLUSTER

R. Cassano, M. J. Hardcastle, M. Brüggen et al
Astrophysical Journal. Vol. 818 (2)
Journal article
2016

Galaxy cluster scaling relations measured with APEX-SZ

D. Flanigan, Daniel Dahlin, M. W. Sommer et al
Monthly Notices of the Royal Astronomical Society. Vol. 460 (4), p. 3432-3446
Journal article
2016

The XXL Survey: XII. Optical spectroscopy of X-ray-selected clusters and the frequency of AGN in superclusters

A. Elyiv, I. Valtchanov, O. Melnyk et al
Astronomy and Astrophysics. Vol. 592, p. Art. no. A11-
Journal article
2016

Magnetic fields in ring galaxies

D. Sokoloff, D. Moss, E. Mikhailov et al
Astronomy and Astrophysics. Vol. 592, p. A44-
Journal article
2016

The XXL Survey II. The bright cluster sample: catalogue and luminosity function

J. Willis, D. Rapetti, J. P. Le Fevre et al
Astronomy and Astrophysics. Vol. 592
Journal article
2016

The XXL Survey: XI. ATCA 2.1 GHz continuum observations?

S. Fotopoulou, Cristian Vignali, Somak Raychaudhury et al
Astronomy and Astrophysics. Vol. 592 (Art. no A10)
Journal article
2016

The XXL Survey I. Scientific motivations - XMM-Newton observing plan - Follow-up observations and simulation programme

C. A. Lin, S. Raychaudury, E. Koulouridis et al
Astronomy and Astrophysics. Vol. 592
Journal article
2016

Using rotation measure grids to detect cosmological magnetic fields: A Bayesian approach

C. Ferrari, J. Jasche, S. Ideguchi et al
Astronomy and Astrophysics. Vol. 591, p. Art. no. A13-
Journal article
2016

The XXL Survey VI. The 1000 brightest X-ray point sources

S. Maurogordato, A. Bongiorno, C. Adami et al
Astronomy and Astrophysics. Vol. 592 (A5)
Journal article
2016

The XXL Survey VIII. MUSE characterisation of intracluster light in a z similar to 0.53 cluster of galaxies

C. Adami, E. Pompei, Cathy Horellou et al
Astronomy and Astrophysics. Vol. 592 (A7)
Journal article
2016

Mid-infrared dust in two nearby radio galaxies, NGC 1316 (Fornax A) and NGC 612 (PKS 0131-36)

Cathy Horellou, B. D. Asabere, T. H. Jarrett et al
Astronomy and Astrophysics. Vol. 592 (A20), p. 1-16
Journal article
2016

The XXL Survey IX. Optical overdensity and radio continuum analysis of a supercluster at z=0.43

J. Delhaize, M. Novak, V. Smolcic et al
Astronomy and Astrophysics. Vol. 592
Journal article
2015

Magnetic Field Tomography in Nearby Galaxies with the Square Kilometre Array

A. Scaife, R. Beck, N. Oppermann et al
Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14). 9 -13 June, 2014. Giardini Naxos, Italy.
Paper in proceedings
2015

Predicted multiply imaged X-ray AGNs in the XXL survey

O. Wertz, A. Elyiv, J. Surdej et al
Monthly Notices of the Royal Astronomical Society. Vol. 452 (2), p. 1480-1492
Journal article
2015

Radio astronomy in Africa: the case of Ghana

Hartmut Winkler, Cathy Horellou, M.J. Gaylard et al
Proceedings of SAIP2014, the 59th Annual Conference of the South African Institute of Physics, edited by Chris Engelbrecht and Steven Karataglidis (University of Johannesburg, 2015), p. 296-301
Paper in proceedings
2015

Subarcsecond international LOFAR radio images of the M82 nucleus at 118 MHz and 154 MHz

R. J. Dettmar, P. Best, Tobia Carozzi et al
Astronomy and Astrophysics. Vol. 574, p. Art. no. A114-
Journal article
2015

Statistical methods for the analysis of rotation measure grids in large scale structures in the SKA era

R. Pizzo, N. Oppermann, R. Paladino et al
Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14). 9 -13 June, 2014. Giardini Naxos, Italy.
Paper in proceedings
2015

Structure, dynamical impact and origin of magnetic fields in nearby galaxies in the SKA era

F. Tabatabaei, R.J. Dettmar, A. Fletcher et al
Proceedings of Advancing Astrophysics with the Square Kilometre Array (AASKA14). 9 -13 June, 2014. Giardini Naxos, Italy.
Paper in proceedings
2015

AGN duty cycle estimates for the ultra-steep spectrum radio relic VLSS J1431.8+1331

M. Brienza, G. J. White, L. Birzan et al
Astronomy and Astrophysics. Vol. 583, p. A89-
Journal article
2014

The nature of the low-frequency emission of M 51 First observations of a nearby galaxy with LOFAR

B. Adebahr, Cathy Horellou, R. Pizzo et al
Astronomy and Astrophysics. Vol. 568, p. Article no. A74-
Journal article
2014

An ALMA Early Science survey of molecular absorption lines toward PKS 1830-211 Analysis of the absorption profiles

F. Combes, A. Beelen, M. Guelin et al
Astronomy and Astrophysics. Vol. 566
Journal article
2014

Magnetic field tomography, helical magnetic fields and Faraday depolarization

A. Fletcher, Cathy Horellou
Monthly Notices of the Royal Astronomical Society. Vol. 441 (3), p. 2049-2057
Journal article
2014

Detection of chloronium and measurement of the Cl-35/Cl-37 isotopic ratio at z=0.89 toward PKS 1830-211

Sebastien Muller, F. Combes, C. Henkel et al
Astronomy and Astrophysics. Vol. 566
Journal article
2014

The XXL Survey. V. Detection of the Sunyaev-Zel'Dovich Effect of the Redshift 1.9 Galaxy Cluster XLSSU J021744.1-034536 With Carma

M. Birkinshaw, Z. Abdulla, C. Adami et al
Astrophysical Journal. Vol. 794 (2)
Journal article
2014

LOFAR LOW-BAND ANTENNA OBSERVATIONS OF THE 3C 295 AND BOOTES FIELDS: SOURCE COUNTS AND ULTRA-STEEP SPECTRUM SOURCES

T. E. Hassall, P. Best, J. Swinbank et al
Astrophysical Journal. Vol. 793 (2), p. art. 82-
Journal article
2014

Discovery of Carbon Radio Recombination Lines in M82

M. W. Wise, R. Beswick, Aggm Tielens et al
Astrophysical Journal Letters. Vol. 795 (2), p. Art. no. L33-
Journal article
2013

A precise and accurate determination of the cosmic microwave background temperature at z = 0.89

Susanne Aalto, John H Black, S.J. Curran et al
Astronomy and Astrophysics. Vol. 551, p. A109 (pp. 1-13)
Journal article
2013

Probing the jet base of the blazar PKS 1830-211 from the chromatic variability of its lensed images. Serendipitous ALMA observations of a strong gamma-ray flare

Sebastien Muller, Ivan Marti-Vidal, F Combes et al
Astronomy and Astrophysics. Vol. 558, p. 123-
Journal article
2013

Studying Galactic interstellar turbulence through fluctuations in synchrotron emission: First LOFAR Galactic foreground detection

A. Karastergiou, A. Horneffer, J. van Leeuwen et al
Astronomy and Astrophysics. Vol. 558, p. 721-
Journal article
2012

Molecular gas and dust in the highly magnified z similar to 2.8 galaxy behind the Bullet Cluster

Daniel Dahlin, W. F. Wall, M. Birkinshaw et al
Astronomy and Astrophysics. Vol. 543, p. Article Number: A62 (pp. 1-10)
Journal article
2012

First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256

T. E. Clarke, H. Rottgering, M. Pandey-Pommier et al
Astronomy and Astrophysics. Vol. 543, p. Article Number: A43 -
Journal article
2012

APEX-SZ: The Atacama Pathfinder EXperiment Sunyaev-Zel'dovich Instrument

M. Sommer, R. Schaaf, Cathy Horellou et al
The Messenger. Vol. 147, p. 7-12
Scientific journal article - non peer reviewed
2011

Invited Article: Millimeter-wave bolometer array receiver for the Atacama pathfinder experiment Sunyaev-Zel'dovich (APEX-SZ) instrument

M. Dobbs, P. Soc Photo Optical V. Bin F, A. Weiss et al
Review of Scientific Instruments. Vol. 82 (9)
Journal article
2011

A LABOCA survey of submillimeter galaxies behind galaxy clusters

Haukur Sigurdarson, Daniel Dahlin, Cathy Horellou
Astronomy and Astrophysics. Vol. 527 (14)
Journal article
2011

Magnetic fields and spiral arms in the galaxy M51

A. Fletcher, A. Shukurov, Cathy Horellou et al
Monthly Notices of the Royal Astronomical Society. Vol. 412 (4), p. 2396-2416
Journal article
2011

APEX Sunyaev-Zeldovich observations of the merging galaxy cluster Abell 2744

Daniel Dahlin, N.N. APEX-SZ collaboration, Cathy Horellou et al
Memorie della Societa Astronomica Italiana. Vol. 82 (668), p. 4-
Conference contribution
2011

CONSTRAINS ON THE QUINTESSENCE FROM OBSERVATIONAL DATA

A. M. Badescu, Cathy Horellou
Romanian Reports on Physics. Vol. 63 (3), p. 852-861
Journal article
2011

Leve The Big Bang Theory!

Cathy Horellou
Populär astronomi (3), p. 24-25
Journal article - popular science
2010

Submillimeter galaxies behind the Bullet cluster (1E 0657-56)

K. Lancaster, Cathy Horellou, M. Birkinshaw et al
Astronomy and Astrophysics. Vol. 514 (12)
Journal article
2010

Submillimeter galaxies behind the Bullet cluster (1E 0657-56)

M. Birkinshaw, K. Basu, F. Bertoldi et al
Astronomy and Astrophysics. Vol. 514 (12)
Journal article
2010

The far-infrared/submillimeter properties of galaxies located behind the Bullet cluster

C. R. Bridge, C. D. Dowell, B. Clément et al
Astronomy and Astrophysics. Vol. 518 (Article Number: L13)
Journal article
2010

Improving the identification of high-z Herschel sources with position priors and optical/NIR and FIR/mm photometric redshifts

C. R. Bridge, G. P. Smith, E. Egami et al
Astronomy and Astrophysics. Vol. 518 (Article Number: L15)
Journal article
2010

Non-parametric modeling of the intra-cluster gas using APEX-SZ bolometer imaging data

K. Basu, B. Westbrook, R. Kneissl et al
Astronomy and Astrophysics. Vol. 519 (Article Number: A29)
Journal article
2009

Multi-frequency imaging of the galaxy cluster Abell 2163 using the Sunyaev-Zel'dovich effect

Cathy Horellou, A. Weiss, F. Bertoldi et al
Astronomy and Astrophysics. Vol. 506, p. 623-636
Journal article
2009

Constraints on the High-ell Power Spectrum of Millimeter-Wave Anisotropies from APEX-SZ

K. Basu, K.M. Menten, Daniel Dahlin et al
Astrophysical Journal. Vol. 701, p. 1958-1964
Journal article
2009

Constraints on the High-ell Power Spectrum of Millimeter-Wave Anisotropies from APEX-SZ

J. Kennedy, K. Basu, Cathy Horellou et al
Astrophysical Journal. Vol. 701, p. 1958-1964
Journal article
2009

Multi-frequency imaging of the galaxy cluster Abell 2163 using the Sunyaev-Zel'dovich effect

K.M. Menten, W.L. Holzapfel, A. Weiss et al
Astronomy and Astrophysics. Vol. 506, p. 623-636
Journal article
2008

Stars and gas in the Medusa merger

Susanne Aalto, Cathy Horellou, S. Hüttemeister et al
Astronomy & Astrophysics. Vol. 490, p. 975-987
Journal article
2008

Sicken attans liten söt antenn!

Cathy Horellou, Daniel Dahlin
Populär Astronomi. Vol. 9 (4), p. 28-29
Journal article
2007

The gas content of moderate-luminosity mergers

E. Manthey, S. Hüttemeister, Susanne Aalto et al
New Astronomy Reviews. Vol. 51 (1-2), p. 71-74
Journal article
2007

Stars and gas in the very large interacting galaxy NGC 6872

Cathy Horellou, B. Koribalski
Astronomy & Astrophysics. Vol. 464, p. 155-165
Journal article
2006

Analysis of spiral arms using anisotropic wavelets: gas, dust and magnetic fields in M51

I. Patrikeev, P. Frick, R. Beck et al
Astronomy & Astrophysics. Vol. 458, p. 441-452
Journal article
2005

Dark Energy and the Evolution of Spherical Overdensities

J. Berge, Cathy Horellou
Mon. Not. R. Astron. Soc.. Vol. 360, p. 1393-1400
Journal article
2005

Radioastronomy for students

Roy Booth, MAGNE HAGSTRÖM, Christer Andersson et al
International Amateur-Professional Photoelectric Photometry Communications, Proceedings of `Global Hands-On Universe 2004", St. Petersburg, Russia, July 2004. Vol. 100, p. 49-54
Conference contribution
2005

Probing the cosmic microwave background temperature using the Sunyaev-Zeldovich effect

D. Johansson, Cathy Horellou, A. Lévy et al
Astronomy & Astrophysics. Vol. 441, p. 435-442
Journal article
2005

Anisotropic wavelet analysis of spiral arms and magnetic fields in the galaxy M51

P. Frick, R. Beck, E. Berkhuijsen et al
In Proceedings of the conf. “The Magnetized Plasma in Galaxy Evolution”, held in Kraków, Poland, Sept. 27 - Oct. 1, 2004, eds. K Chyzy, K. Otmianowska-Mazur, M. Soida, R.-J. Dettmar, Jagiellonian University, Kraków 2005, p. 130-135
Conference contribution
2005

The signature of dark energy on the Local Hubble flow

Cathy Horellou, A. Maccio, F. Governato
Monthly Notices of the RAS. Vol. 359, p. 941-
Journal article
2004

Dark Energy and the Evolution of Spherical Overdensities

J. Berge, Cathy Horellou
Proceedings of XXXIXth Rencontres de Moriond, La Thuile, Italy, Mar. 28-Apr. 4, 2004, eds. Y. Giraud-Héraud, J. Trân Thanh Vân, p. 155-
Paper in proceedings
2004

Magnetic Fields and Spiral Structure

A. Shukarov, R. Beck, Cathy Horellou et al
Proceedings of "How does the Galaxy Work?", Granada, Spain, June 2003, eds E.J. Alfaro, E. Perez, J. Franco, Astrophys. and Sp. Sci. Library, Springer-Verlag, p. 315-
Paper in proceedings
2004

Gas and Star Formation in the Interacting Galaxies NGC 6872/IC 4970

B. Koribalski, Cathy Horellou
in Proceedings of "The Neutral ISM in Starburst Galaxies", Marstrand, June 2003, eds. Aalto S., Huettemeister S., Pedlar A., Astronomical Society of the Pacific Conf. Series, San Francisco, p. 69-72
Paper in proceedings
2004

Stars and Gas in the Large Interacting Galaxy NGC 6872

Cathy Horellou, B.S. Koribalski
IAU-symposium nr 217, 2003 Sydney, eds. P.-A. Duc, J. Braine, E. Brinks, p. p. 422-
Paper in proceedings
2004

A wavelet add-on code for new-generation N-body simulations and data de-noising (JOFILUREN)

Jöran Bergh, Alessandro Romeo, Cathy Horellou
Monthly Notices of the Royal Astronomical Society. Vol. 354 (4), p. 1208-1222
Journal article
2004

Assessing the galaxy population out to z~2 using the Hubble Deep Field South

Cathy Horellou, Duilia de Mello, Theresa Wiegert
Astronomy & Astrophysics. Vol. 426, p. 455-462
Journal article
2003

N-body simulations with two-orders-of-magnitude higher performance using wavelets

Alessandro Romeo, Jöran Bergh, Cathy Horellou
Monthly Notices of the Royal Astronomical Society. Vol. 342 (2), p. 337-344
Journal article