Research output per year
Research output per year
Personal profile
Research Interests
Atmospheric Physics and Energy: Solar irradiation, aerosols, interaction between radiation and aerosols, solar energy, the South African energy landscape; Astrophysics: Active Galactic Nuclei (AGN), in particular Seyfert galaxies – spectral properties, classification, variability, optical photometry.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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eROSITA detection of a cloud obscuration event in the Seyfert AGN EC 04570–5206
Markowitz, A., Krumpe, M., Homan, D., Gromadzki, M., Schramm, M., Boller, T., Krishnan, S., Saha, T., Wilms, J., Gokus, A., Haemmerich, S., Winkler, H., Buchner, J., Buckley, D. A. H., Brogan, R. & Reichart, D. E., 1 Apr 2024, In: Astronomy and Astrophysics. 684, A101.Research output: Contribution to journal › Article › peer-review
Open Access -
The first spectroscopic IR reverberation programme on Mrk 509
Mitchell, J. A. J., Ward, M. J., Kynoch, D., Santisteban, J. V. H., Horne, K., Pott, J. U., Esser, J., Mercatoris, P., Packham, C., Ferland, G. J., Lawrence, A., Fischer, T., Barth, A. J., Villforth, C. & Winkler, H., 1 Apr 2024, In: Monthly Notices of the Royal Astronomical Society. 529, 4, p. 4824-4839 16 p.Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (Scopus) -
1E 0502–667: An AGN without narrow lines?
Winkler, H., Kadiaka, T. & van Wyk, F., 27 Dec 2023, In: Proceedings of Science. 426, 035.Research output: Contribution to journal › Conference article › peer-review
Open Access -
A Complex Dust Morphology in the High-luminosity AGN Mrk 876
Landt, H., Mitchell, J. A. J., Ward, M. J., Mercatoris, P., Pott, J. U., Horne, K., Hernández Santisteban, J. V., Malhotra, D., Cackett, E. M., Goad, M. R., Romero Colmenero, E. & Winkler, H., 1 Mar 2023, In: Astrophysical Journal. 945, 1, 62.Research output: Contribution to journal › Article › peer-review
Open Access5 Citations (Scopus) -
Continuum Reverberation Mapping of Mrk 876 over Three Years with Remote Robotic Observatories
Miller, J. A., Cackett, E. M., Goad, M. R., Horne, K., Barth, A. J., Romero-Colmenero, E., Fausnaugh, M., Gelbord, J., Korista, K. T., Landt, H., Treu, T. & Winkler, H., 20 Aug 2023, In: Astronomical Journal. 953, 2, 137.Research output: Contribution to journal › Article › peer-review
Open Access4 Citations (Scopus)
Press/Media
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Eskom 36% tariff increase demand reflects Kusile, Medupi errors
4/10/24
1 item of Media coverage
Press/Media
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Environmentalists warn against new nuclear energy expansion after Koeberg's unit one shutdown
25/09/24
1 item of Media coverage
Press/Media
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Environmentalists warn against new nuclear energy expansion after Koeberg’s unit one shutdown
25/09/24
1 item of Media coverage
Press/Media
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Power battle over nuclear 'solution' for South Africa's energy crisis
9/08/24
1 item of Media coverage
Press/Media
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South Africa's new energy ministry will provide better Eskom oversight, analysts say
5/07/24
1 item of Media coverage
Press/Media