Publications

On Arxiv

Search on Arxiv: A Offringa search.

First author

• Precision requirements for interferometric gridding in 21-cm power spectrum analysis, A.R. Offringa et al. 2019, A&A, 631, A12.
• The impact of interference excision on 21-cm Epoch of Reionization power spectrum analyses, A.R. Offringa et al. 2019, MNRAS, 484, 2.
• An optimized algorithm for multi-scale wideband deconvolution of radio astronomical images, A.R. Offringa & O. Smirnov. 2017, MNRAS, 471, 1.
• Compression of interferometric radio-astronomical data, A.R. Offringa. 2016, A&A, 595, A99.
• Parametrising Epoch of Reionization foregrounds: A deep survey of low-frequency point-source spectra with the MWA, A.R. Offringa et al., Jan 2016, MNRAS, 458, 1, pp. 1057-1070.
• The low-frequency environment of the Murchison Widefield Array: radio-frequency interference analysis and mitigation, A.R. Offringa et al., Jan 2015, PASA, 32, e008.
• WSClean: an implementation of a fast, generic wide-field imager for radio astronomy, A.R. Offringa et al., Oct 2014, MNRAS, 444, 1, pp. 606-619
• The brightness and spatial distributions of terrestrial radio sources, A.R. Offringa et al., Oct 2013, MNRAS, 435, 1, pp. 584-596.
• The LOFAR radio environment, A.R. Offringa et al., Jan 2013, A&A, 549, A1.
• Algorithms for Radio Interference Detection and Removal, A.R. Offringa. Jun 2012, University of Groningen, dissertation.
• Post-correlation filtering techniques for off-axis source and RFI removal, A.R. Offringa, A.G. de Bruyn and S. Zaroubi. May 2012, MNRAS, 422, 1, pp. 563-580.
• A morphological algorithm for improving radio-frequency interference detection, A.R. Offringa, J.J. van de Gronde and J.B.T.M. Roerdink. Mar 2012, A&A, 539, A95.
• Interference detection results with LOFAR, A.R. Offringa and A.G. de Bruyn. 2011, Proc. of the URSI, General Assembly..
• A LOFAR RFI detection pipeline and its first results, A.R. Offringa, A.G. de Bruyn, S. Zaroubi, M. Biehl., Mar 2010, Proc. of Science, RFI2010.
• Post-correlation radio frequency interference classification methods, A.R. Offringa, A.G. de Bruyn, M. Biehl, S. Zaroubi, G. Bernardi, V.N. Pandey, Jun 2010, MNRAS, 405, 1, pp. 155-167.

Co-authored

• Efficient and Robust Path Openings using the Scale-Invariant Rank Operator., J.J. van de Gronde, A.R. Offringa and J.B.T.M. Roerdink., Apr 2016, Journal of Math. Imaging and Vision, ISSN 1573-7683, pp. 1-17
• Modelling of the Spectral Energy Distribution of Fornax A: Leptonic and Hadronic Production of High Energy Emission from the Radio Lobes, Nov 2014, B. McKinley, R. Yang, M. López-Caniego et al., Nov 2014, MNRAS, in press.
• Limits on low frequency radio emission from southern exoplanets with the Murchison Widefield Array, T. Murphy, M. E. Bell, D. L. Kaplan, et al., Nov 2014, , MNRAS, in press.
• The first Murchison Widefield Array low frequency radio observations of cluster scale non-thermal emission: the case of Abell 3667, L. Hindson, M. Johnston-Hollitt, N. Hurley-Walker et al., Nov 2014, MNRAS, 445, pp. 330-346.
• Initial LOFAR observations of Epoch of Reionization windows: II. Diffuse polarized emission in the ELAIS-N1 field, V. Jelic, A. G. de Bruyn, M. Mevius et al., Aug 2014, A&A, 568, A101.
• Observing the Sun with the Murchison Widefield Array, D. Oberoi, R. Sharma, S. Bhatnagar et al., Aug 2014, Proc of URSI GASS, XXXIth URSI, 16-23 Aug. 2014.
• Constraining the epoch of reionization with the variance statistic: simulations of the LOFAR case, A. H. Patil, S. Zaroubi, E. Chapman et al., Sep. 2014, MNRAS, 443, 1113.
• The giant lobes of Centaurus A observed at 118 MHz with the Murchison Widefield Array, B. McKinley, F. Briggs, B.M. Gaensler, I.J. Feain, G. Bernardi, R.B. Wayth, M. Johnston-Hollitt, A.R. Offringa et al., Dec 2013, MNRAS, 436, pp. 1286-1301.
• LOFAR: The Low-Frequency Array, M.P. van Haarlem et al. Astronomy & Astrophysics, Vol. 556, Issue A2, Aug 2013.
• Probing reionization with LOFAR using 21-cm redshift space distortions, H. Jensen et al. Monthly Notices of the Royal Astronomical Society, Vol. 435, Oct 2013, pp. 460-474.
• Initial deep LOFAR observations of Epoch of Reionization windows: I. The North Celestial Pole, S. Yatawatta et al. Astronomy & Astrophysics, Vol. 550, Feb 2013, A136.
• Reionization and the Cosmic Dawn with the Square Kilometre Array, G. Mellema et al. Experimental Astronomy, Vol 36, Aug 2013, Issue 1-2, pp 235-318.
• LOFAR insights into the epoch of reionization from the cross power spectrum of 21cm emission and galaxies, R.P.C. Wiersma, B. Ciardi, R.M. Thomas, G.J.A. Harker, S. Zaroubi, G. Bernardi, M. Brentjens, A.G. de Bruyn, S. Daiboo, V. Jelić, S. Kazemi, L.V.E. Koopmans, P. Labropoulos, O. Martinez, G. Mellema, A.R. Offringa, V.N. Pandey, J. Schaye, V. Veligatla, H. Vedantham, S. Yatawatta. Monthly Notices of the Royal Astronomical Society, Vol 432, May 2013, Issue 3, pp. 2615-2624.
• M87 at metre wavelengths: the LOFAR picture, F. de Gasperin et al. Astronomy & Astrophysics, Vol. 547, Nov 2012, A56.
• LEDDB: LOFAR Epoch of Reionization Diagnostic Database, O. Martinez-Rubi, V.K. Veligatla, A.G. de Bruyn, P. Lampropoulos, A.R. Offringa, V. Jelić, S. Yatawatta, L.V.E. Koopmans, S. Zaroubi. Proc. of the Astronomical Data Analysis Software and Systems conf. XXII, Nov 2012, Uni. of Illinois.
• Prospects for detecting the 21 cm forest from the diffuse intergalactic medium with LOFAR, B. Ciardi et al. Monthly Notices of the Royal Astronomical Society, Vol 435, Oct 2013, Issue 2.
• Imaging neutral hydrogen on large-scales during the Epoch of Reionization with LOFAR, S. Zaroubi, A.G. de Bruyn, G. Harker, R.M. Thomas, P. Labropolous, V. Jelić, L.V.E. Koopmans, M.A. Brentjens, G. Bernardi, B. Ciardi, S. Daiboo, S. Kazemi, O. Martinez-Rubi, G. Mellema, A.R. Offringa, V. N. Pandey, J. Schaye, V. Veligatla, H. Vedantham, S. Yatawatta. Monthly Notices of the Royal Astronomical Society, Vol. 425, Oct 2012, pp. 2964-2973.
• First LOFAR observations at very low frequencies of cluster-scale non-thermal emission: the case of Abell 2256, R.J. van Weeren et al. Astronomy & Astrophysics, Vol. 543, Jul 2012, A43.
• First LOFAR results on galaxy clusters, C. Ferrari et al. Proc. of the 2012 week of the French Society of Astronomy and Astrophysics (SF2A), Nice, Jun, 2012.
• LOFAR: Recent imaging results & future prospects, G. Heald, M.R. Bell, A. Horneffer, A.R. Offringa, R. Pizzo et al. Proc. conf. Diffuse Relativistic Plasmas, March 2011
• Foregrounds for observations of the cosmological 21 cm line: II. Westerbork observations of the fields around 3C196 and the North Celestial Pole, G. Bernardi, A.G. de Bruyn, G. Harker, M.A. Brentjens, B. Ciardi, V. Jelić, L.V.E. Koopmans, P. Labropoulos, A.R. Offringa, V.N. Pandey, J. Schaye, R.M. Thomas, S. Yatawatta, S. Zaroubi. Astronomy and Astrophysics, Volume 522, November 2010, A67.
• Power spectrum extraction for redshifted 21-cm Epoch of Reionization experiments: the LOFAR case, G. Harker, S. Zaroubi, G. Bernardi, M.A. Brentjens, A.G. de Bruyn, B. Ciardi, V. Jelić, L.V.E. Koopmans, P. Labropoulos, G. Mellema, A.R. Offringa, V.N. Pandey, A.H. Pawlik, J. Schaye, R.M. Thomas and S. Yatawatta. Monthly Notices of the Royal Astronomical Society, Volume 405, Issue 4, July 2010, pp. 2492-2504.
• Non-parametric foreground subtraction for 21-cm epoch of reionization experiments, G. Harker, S. Zaroubi, G. Bernardi, M.A. Brentjens, A.G. de Bruyn, B. Ciardi, V. Jelić, L.V.E. Koopmans, P. Labropoulos, A.R. Offringa, V.N. Pandey, J. Schaye and S. Yatawatta. Monthly Notices of the Royal Astronomical Society, Volume 397, Issue 2, Juli 2009, pp. 1138-1152
• Foregrounds for observations of the cosmological 21 cm line. I. First Westerbork measurements of Galactic emission at 150 MHz in a low latitude field, G. Bernardi, A.G. de Bruyn, M.A. Brentjens, B. Ciardi, G. Harker, V. Jelić, L.V.E. Koopmans, P. Labropoulos, A.R. Offringa, V.N. Pandey, J. Schaye, R.M. Thomas, S. Yatawatta, S. Zaroubi. Astronomy and Astrophysics, Volume 500, Issue 3, March 2009, pp. 965-979
• The LOFAR EoR data model: (I) Effects of noise and instrumental corruptions on the 21-cm reionization signal-extraction strategy, P. Labropoulos, L.V.E. Koopmans, V. Jelić, S. Yatawatta, R.M. Thomas, G. Bernardi, M.A. Brentjens, A.G. de Bruyn, B. Ciardi, G. Harker, A.R. Offringa, V.N. Pandey, J. Schaye, S. Zaroubi. Arxiv 0901.3359, 2009.

Posters

• The LOFAR interference detection pipeline (2011)

Technical reports

• The SumThreshold method: technical details, A.R. Offringa
  Technical report, published as dissertation appendix, May 2012.

Reports written as an undergraduate student

• My master thesis, titled "Visualisation and Pattern Recognition in Astronomical Catalogues" (2008)
• Simulating the intestine, the result of my research internship (2007)
• The Metropolis Monte Carlo-method and Computational Physics (2008)
• Diffusion Limited Aggregation (2006)