Stuart Sim

2025

Exploring the range of impacts of helium in the spectra of double detonation models for Type Ia supernovae

Callan, F. P., Collins, C. E., Sim, S. A., Shingles, L. J., Pakmor, R., Srivastav, S., Pollin, J. M., Gronow, S., Röpke, F. K. & Seitenzahl, I. R., May 2025, In: Monthly Notices of the Royal Astronomical Society. 539, 2, p. 1404–1413 10 p.

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Luminosity predictions for the first three ionization stages of W, Pt and Au to probe potential sources of emission in kilonova

McCann, M., Mulholland, L. P., Xiong, Z., Ramsbottom, C. A., Ballance, C. P., Just, O., Bauswein, A., Martínez-Pinedo, G., McNeill, F. & Sim, S. A., Mar 2025, In: Monthly Notices of the Royal Astronomical Society. 538, 1, p. 537-552 16 p.

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Non-LTE radiative transfer simulations: improved agreement of the double detonation with normal Type Ia supernovae

Collins, C. E., Shingles, L. J., Sim, S. A., Callan, F. P., Gronow, S., Hillebrandt, W., Kromer, M., Pakmor, R. & Röpke, F. K., Apr 2025, In: Monthly Notices of the Royal Astronomical Society. 1289–1300.

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1 Citation (Scopus)

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SN 2023zaw: the low-energy explosion of an ultrastripped star

Moore, T., Gillanders, J. H., Nicholl, M., Huber, M. E., Smartt, S. J., Srivastav, S., Stevance, H. F., Chen, T.-W., Chambers, K. C., Anderson, J. P., Fulton, M. D., Oates, S. R., Angus, C., Pignata, G., Erasmus, N., Gao, H., Herman, J., Lin, C.-C., Lowe, T. & Magnier, E. A. & 9 others, Minguez, P., Ngeow, C.-C., Sheng, X., Sim, S. A., Smith, K. W., Wainscoat, R., Yang, S., Young, D. R. & Zeng, K.-J., 20 Feb 2025, In: The Astrophysical Journal Letters. 980, 2, 13 p., L44.

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1 Citation (Scopus)

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2024

Collisional and radiative data for tellurium ions in kilonovae modelling and laboratory benchmarks

Mulholland, L. P., McNeill, F., Sim, S. A., Ballance, C. P. & Ramsbottom, C. A., Nov 2024, In: Monthly Notices of the Royal Astronomical Society. 534, 4, p. 3423–3438 16 p.

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1 Citation (Scopus)

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Helium features are inconsistent with the spectral evolution of the kilonova AT2017gfo

Sneppen, A., Damgaard, R., Watson, D., Collins, C. E., Shingles, L. & Sim, S. A., 01 Dec 2024, In: Astronomy & Astrophysics. 692, A134.

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2 Citations (Scopus)

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Including a luminous central remnant in radiative transfer simulations for Type Iax supernovae

Callan, F. P., Sim, S. A., Collins, C. E., Shingles, L. J., Lach, F., Röpke, F. K., Pakmor, R., Kromer, M. & Srivastav, S., May 2024, In: Monthly Notices of the Royal Astronomical Society. 530, 2, p. 1457-1473 17 p.

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Modelling the spectra of the kilonova AT2017gfo – II: Beyond the photospheric epochs

Gillanders, J. H., Sim, S. A., Smartt, S. J., Goriely, S. & Bauswein, A., Apr 2024, In: Monthly Notices of the Royal Astronomical Society. 529, 3, p. 2918-2945 28 p.

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13 Citations (Scopus)

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New radiative and collisional atomic data for Sr {\sc ii} and Y {\sc ii} with application to Kilonova modelling

Mulholland, L. P., McElroy, N. E., McNeill, F. L., Sim, S. A., Ballance, C. P. & Ramsbottom, C. A., Aug 2024, In: Monthly Notices of the Royal Astronomical Society. 532, 2, p. 2289-2308 20 p.

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3 Citations (Scopus)

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On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae - II. 3D synthetic observables

Pollin, J. M., Sim, S. A., Pakmor, R., Callan, F. P., Collins, C. E., Shingles, L. J., Röpke, F. K. & Srivastav, S., Sept 2024, In: Monthly Notices of the Royal Astronomical Society. 533, 3, p. 3036–3052 17 p.

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4 Citations (Scopus)

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SIROCCO: a publicly available Monte Carlo ionization and radiative transfer code for astrophysical outflows

Matthews, J. H., Long, K. S., Knigge, C., Sim, S. A., Parkinson, E. J., Higginbottom, N., Mangham, S. W., Scepi, N., Wallis, A., Hewitt, H. A. & Mosallanezhad, A., 04 Dec 2024, In: Monthly Notices of the Royal Astronomical Society. 536, 1, p. 879–904

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State-of-the-art simulations of line-driven accretion disc winds: realistic radiation-hydrodynamics leads to weaker outflows

Higginbottom, N., Scepi, N., Knigge, C., Long, K. S., Matthews, J. H. & Sim, S. A., Jan 2024, In: Monthly Notices of the Royal Astronomical Society. 527, 3, p. 9236–9249

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6 Citations (Scopus)

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Synthetic light curves and spectra from a self-consistent 2D simulation of an ultra-strippped supernova

Maunder, T., Müller, B., Callan, F., Sim, S. & Heger, A., Jan 2024, In: Monthly Notices of the Royal Astronomical Society. 527, 2, p. 2185–2197 23 p.

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3 Citations (Scopus)

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Towards inferring the geometry of kilonovae

Collins, C. E., Shingles, L. J., Bauswein, A., Sim, S. A., Soultanis, T., Vijayan, V., Flörs, A., Just, O., Leck, G., Lioutas, G., Martínez-Pinedo, G., Sneppen, A., Watson, D. & Xiong, Z., 01 Apr 2024, In: Monthly Notices of the Royal Astronomical Society. 529, 2, p. 1333-1346 14 p.

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8 Citations (Scopus)

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Type Ia supernova explosion models are inherently multidimensional

Pakmor, R., Seitenzahl, I. R., Ruiter, A. J., Sim, S. A., Röpke, F. K., Taubenberger, S., Bieri, R. & Blondin, S., 01 Jun 2024, In: Astronomy & Astrophysics. 686, June, 7 p., A227 .

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6 Citations (Scopus)

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2023

3D radiative transfer kilonova modelling for binary neutron star merger simulations

Collins, C. E., Bauswein, A., Sim, S. A., Vijayan, V., Martínez-Pinedo, G., Just, O., Shingles, L. J. & Kromer, M., 24 Feb 2023, (Early online date) In: Monthly Notices of the Royal Astronomical Society.

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19 Citations (Scopus)

212 Downloads (Pure)

Helium as a signature of the double detonation in Type Ia supernovae

Collins, C. E., Sim, S. A., Shingles, L. J., Gronow, S., Roepke, F. K., Pakmor, R., Seitenzahl, I. R. & Kromer, M., Sept 2023, In: Monthly Notices of the Royal Astronomical Society. 524, 3, p. 4447–4454

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10 Citations (Scopus)

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Kilonova emission from realistic neutron star merger simulations

Collins, C. E., Bauswein, A., Sim, S. A., Vijayan, V., Martínez-Pinedo, G., Just, O., Shingles, L. J. & Kromer, M., 19 Jun 2023, Proceedings of the 7th Edition Workshop on FAIR Next Generation Scientists. 7 p. (Proceedings of Science; vol. 419).

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Modeling Type Ia supernovae with explosions in white dwarfs near and below the Chandrasekhar mass

Röpke, F. K., Lach, F., Gronow, S., Sim, S. A., Callan, F. P. & Collins, C. E., 08 Mar 2023, The Sixteenth Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories: proceedings of the MG16 Meeting on General Relativity. Ruffini, R. & Vereshchagin, G. (eds.). World Scientific, p. 4420-4426

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Monte Carlo radiative transfer for neutron star merger simulations

Shingles, L. J., Martínez-Pinedo, G., Vijayan, V., Flörs, A., Collins, C. E. & Sim, S. A., 19 Jun 2023, Proceedings of the 7th Edition Workshop on FAIR Next Generation Scientists. (Proceedings of Science; vol. 419).

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Photometry and spectroscopy of the Type Icn supernova 2021ckj. The diverse properties of the ejecta and circumstellar matter of Type Icn supernovae

Nagao, T., Kuncarayakti, H., Maeda, K., Moore, T., Pastorello, A., Mattila, S., Uno, K., Smartt, S. J., Sim, S. A., Ferrari, L., Tomasella, L., Anderson, J. P., Chen, T. W., Galbany, L., Gao, H., Gromadzki, M., Gutiérrez, C. P., Inserra, C., Kankare, E. & Magnier, E. A. & 3 others, Müller-Bravo, T. E., Reguitti, A. & Young, D. R., 01 May 2023, In: Astronomy and Astrophysics. 673, A27.

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8 Citations (Scopus)

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Self-consistent 3D radiative transfer for kilonovae: directional spectra from merger simulations

Shingles, L. J., Collins, C. E., Vijayan, V., Flörs, A., Just, O., Leck, G., Xiong, Z., Bauswein, A., Martínez-Pinedo, G. & Sim, S. A., 08 Sept 2023, In: Astrophysical Journal Letters. 954, 2, 11 p., L41.

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17 Citations (Scopus)

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SN 2022jli: a type Ic supernova with periodic modulation of its light curve and an unusually long rise

Moore, T., Smartt, S. J., Nicholl, M., Srivastav, S., Stevance, H. F., Jess, D. B., Grant, S. D. T., Fulton, M. D., Rhodes, L., Sim, S. A., Hirai, R., Podsiadlowski, P., Anderson, J. P., Ashall, C., Bate, W., Fender, R., Gutiérrez, C. P., Howell, D. A., Huber, M. E. & Inserra, C. & 25 others, Leloudas, G., Monard, L. A. G., Müller-Bravo, T. E., Shappee, B. J., Smith, K. W., Terreran, G., Tonry, J., Tucker, M. A., Young, D. R., Aamer, A., Chen, T.-W., Ragosta, F., Galbany, L., Gromadzki, M., Harvey, L., Hoeflich, P., McCully, C., Newsome, M., Gonzalez, E. P., Pellegrino, C., Ramsden, P., Pérez-Torres, M., Ridley, E. J., Sheng, X. & Weston, J., 13 Oct 2023, In: The Astrophysical Journal Letters. 956, 1, 13 p., L31.

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11 Citations (Scopus)

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Spherical symmetry in the kilonova AT2017gfo/GW170817

Sneppen, A., Watson, D., Bauswein, A., Just, O., Kotak, R., Nakar, E., Poznanski, D. & Sim, S., 15 Feb 2023, In: Nature. 614, 7948, p. 436-439 4 p.

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32 Citations (Scopus)

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The luminous type la supernova 2022ilv and its early excess emission

Srivastav, S., Smartt, S. J., Huber, M. E., Dimitriadis, G., Chambers, K. C., Fulton, M. D., Moore, T., Callan, F. P., Gillanders, J. H., Maguire, K., Nicholl, M., Shingles, L. J., Sim, S. A., Smith, K. W., Anderson, J. P., de Boer, T., Chen, T.-W., Gao, H. & Young, D. R., 01 Feb 2023, In: The Astrophysical Journal Letters. 943, 2, 9 p., L20.

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21 Citations (Scopus)

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The optical light curve of GRB 221009A: the afterglow and the emerging supernova

Fulton, M. D., Smartt, S. J., Rhodes, L., Huber, M. E., Villar, V. A., Moore, T., Srivastav, S., Schultz, A. S. B., Chambers, K. C., Izzo, L., Hjorth, J., Chen, T.-W., Nicholl, M., Foley, R. J., Rest, A., Smith, K. W., Young, D. R., Sim, S. A., Bright, J. & Zenati, Y. & 29 others, Boer, T. D., Bulger, J., Fairlamb, J., Gao, H., Lin, C.-C., Lowe, T., Magnier, E. A., Smith, I. A., Wainscoat, R., Coulter, D. A., Jones, D. O., Kilpatrick, C. D., McGill, P., Ramirez-Ruiz, E., Lee, K.-S., Narayan, G., Ramakrishnan, V., Ridden-Harper, R., Singh, A., Wang, Q., Kong, A. K. H., Ngeow, C.-C., Pan, Y.-C., Yang, S., Davis, K. W., Piro, A. L., Rojas-Bravo, C., Sommer, J. & Yadavalli, S. K., 20 Mar 2023, In: The Astrophysical Journal Letters. 946, 1, 12 p., L22.

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31 Citations (Scopus)

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Unprecedented early flux excess in the hybrid 02es-like type Ia supernova 2022ywc indicates interaction with circumstellar material

Srivastav, S., Moore, T., Nicholl, M., Magee, M. R., Smartt, S. J., Fulton, M. D., Sim, S. A., Pollin, J. M., Galbany, L., Inserra, C., Kozyreva, A., Moriya, T. J., Callan, F. P., Sheng, X., Smith, K. W., Sommer, J. S., Anderson, J. P., Deckers, M., Gromadzki, M. & Müller-Bravo, T. E. & 3 others, Pignata, G., Rest, A. & Young, D. R., 20 Oct 2023, In: The Astrophysical Journal Letters. 956, 2, 11 p., L34.

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7 Citations (Scopus)

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2022

An analysis of the spectroscopic signatures of layering in the ejecta of Type Iax supernovae

Magee, M. R., Gillanders, J. H., Maguire, K., Sim, S. A. & Callan, F. P., Jan 2022, In: Monthly Notices of the Royal Astronomical Society. 509, 3, p. 3580-3598 19 p.

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10 Citations (Scopus)

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A new emulated Monte Carlo radiative transfer disc-wind model: X-Ray Accretion Disc-wind Emulator – xrade

Matzeu, G. A., Lieu, M., Costa, M. T., Reeves, J. N., Braito, V., Dadina, M., Nardini, E., Boorman, P. G., Parker, M. L., Sim, S. A., Barret, D., Kammoun, E., Middei, R., Giustini, M., Brusa, M., Cabrera, J. P. & Marchesi, S., Oct 2022, In: Monthly Notices of the Royal Astronomical Society. 515, 4, p. 6172-6190 19 p.

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14 Citations (Scopus)

Double detonations: variations in Type Ia supernovae due to different core and He shell masses – II: synthetic observables

Collins, C. E., Gronow, S., Sim, S. A. & Röpke, F. K., 24 Sept 2022, (Early online date) In: Monthly Notices of the Royal Astronomical Society. 14 p.

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21 Citations (Scopus)

HOLISMOKES VII. Time-delay measurement of strongly lensed Type Ia supernovae using machine learning

Huber, S., Suyu, S. H., Ghoshdastidar, D., Taubenberger, S., Bonvin, V., Chan, J. H. H., Kromer, M., Noebauer, U. M., Sim, S. A. & Leal-Taixé, L., 15 Feb 2022, In: Astronomy and Astrophysics. 658, A157.

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20 Citations (Scopus)

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Modelling the ionisation state of Type Ia supernovae in the nebular-phase

Shingles, L. J., Flörs, A., Sim, S. A., Collins, C. E., Röpke, F. K., Seitenzahl, I. R. & Shen, K. J., Jun 2022, In: Monthly Notices of the Royal Astronomical Society. 512, 4, p. 6150–6163

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15 Citations (Scopus)

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Modelling the spectra of the kilonova AT2017gfo – I. The photospheric epochs

Gillanders, J. H., Smartt, S. J., Sim, S. A., Bauswein, A. & Goriely, S., Sept 2022, In: Monthly Notices of the Royal Astronomical Society. 515, 1, p. 631-651 21 p.

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62 Citations (Scopus)

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Models of pulsationally assisted gravitationally confined detonations with different ignition conditions

Lach, F., Callan, F. P., Sim, S. A. & Röpke, F. K., 02 Mar 2022, In: Astronomy and Astrophysics. 659, 15 p., A27.

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12 Citations (Scopus)

On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae

Pakmor, R., Callan, F. P., Collins, C. E., de Mink, S. E., Holas, A., Kerzendorf, W. E., Kromer, M., Neunteufel, P. G., O’Brien, J. T., Röpke, F. K., Ruiter, A. J., Seitenzahl, I. R., Shingles, L. J., Sim, S. A. & Taubenberger, S., Dec 2022, In: Monthly Notices of the Royal Astronomical Society. 517, 4, p. 5260–5271

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47 Citations (Scopus)

58 Downloads (Pure)

Optical line spectra of tidal disruption events from reprocessing in optically thick outflows

Parkinson, E. J., Knigge, C., Matthews, J. H., Long, K. S., Higginbottom, N., Sim, S. A. & Mangham, S. W., Mar 2022, In: Monthly Notices of the Royal Astronomical Society. 510, 4, p. 5426–5443

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20 Citations (Scopus)

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SN 2020kyg and the rates of faint Iax supernovae from ATLAS

Srivastav, S., Smartt, S. J., Huber, M. E., Chambers, K. C., Angus, C. R., Chen, T.-W., Callan, F. P., Gillanders, J. H., McBrien, O. R., Sim, S. A., Fulton, M., Hjorth, J., Smith, K. W., Young, D. R., Auchettl, K., Anderson, J. P., Pignata, G., de Boer, T. J. L., Lin, C.-C. & Magnier, E. A., Apr 2022, In: Monthly Notices of the Royal Astronomical Society. 511, 2, p. 2708–2731

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17 Citations (Scopus)

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StaNdaRT: a repository of standardised test models and outputs for supernova radiative transfer

Blondin, S., Blinnikov, S., Callan, F. P., Collins, C. E., Dessart, L., Even, W., Flörs, A., Fullard, A. G., Hillier, D. J., Jerkstrand, A., Kasen, D., Katz, B., Kerzendorf, W., Kozyreva, A., O'Brien, J., Pássaro, E. A., Roth, N., Shen, K. J., Shingles, L. & Sim, S. A. & 9 others, Singhal, J., Smith, I. G., Sorokina, E., Utrobin, V. P., Vogl, C., Williamson, M., Wollaeger, R., Woosley, S. E. & Wygoda, N., 01 Dec 2022, In: Astronomy and Astrophysics. 668, A163.

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11 Citations (Scopus)

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Type Iax supernovae from deflagrations in Chandrasekhar mass white dwarfs

Lach, F., Callan, F. P., Bubeck, D., Röpke, F. K., Sim, S. A., Schrauth, M., Ohlmann, S. T. & Kromer, M., 21 Feb 2022, In: Astronomy and Astrophysics. 658, A179.

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25 Citations (Scopus)

2021

Constraints on the presence of platinum and gold in the spectra of the kilonova AT2017gfo

Gillanders, J. H., McCann, M., Sim, S. A., Smartt, S. J. & Ballance, C. P., Sept 2021, In: Monthly Notices of the Royal Astronomical Society. 506, 3, p. 3560–3577

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47 Citations (Scopus)

80 Downloads (Pure)

Double detonations of sub-M_ChCO white dwarfs: Variations in Type Ia supernovae due to different core and He shell masses

Gronow, S., Collins, C. E., Sim, S. A. & Röpke, F. K., 02 Jun 2021, (Early online date) In: Astronomy and Astrophysics. 649, A155.

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54 Citations (Scopus)

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Exploring the diversity of double-detonation explosions for Type Ia supernovae: effects of the post-explosion helium shell composition

Magee, M. R., Maguire, K., Kotak, R. & Sim, S. A., Apr 2021, In: Monthly Notices of the Royal Astronomical Society. 502, 3, p. 3533-3553 21 p.

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23 Citations (Scopus)

63 Downloads (Pure)

HOLISMOKES. III. Achromatic phase of strongly lensed Type Ia supernovae

Huber, S., Suyu, S. H., Noebauer, U. M., Chan, J. H. H., Kromer, M., Sim, S. A., Sluse, D. & Taubenberger, S., 16 Feb 2021, In: Astronomy and Astrophysics. 646, A110.

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25 Citations (Scopus)

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Metallicity-dependent nucleosynthetic yields of Type Ia supernovae originating from double detonations of sub- M _Chwhite dwarfs

Gronow, S., Côté, B., Lach, F., Seitenzahl, I. R., Collins, C. E., Sim, S. A. & Röpke, F. K., 01 Dec 2021, In: Astronomy and Astrophysics. 656, 20 p., A94.

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39 Citations (Scopus)

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Prospects of direct detection of 48V gamma-rays from thermonuclear supernovae

Panther, F. H., Seitenzahl, I. R., Ruiter, A. J., Siegert, T., Sim, S. & Crocker, R. M., Dec 2021, In: Monthly Notices of the Royal Astronomical Society. 508, 2, p. 1590–1598

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5 Citations (Scopus)

117 Downloads (Pure)

2020

Accretion Disc Winds in Tidal Disruption Events: Ultraviolet Spectral Lines as Orientation Indicators

Parkinson, E. J., Knigge, C., Long, K. S., Matthews, J. H., Higginbottom, N., Sim, S. A. & Hewitt, H. A., 21 Apr 2020, (Early online date) In: Monthly Notices of the Royal Astronomical Society, Advance Access.

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13 Citations (Scopus)

73 Downloads (Pure)

AT2018kzr: the merger of an oxygen-neon white dwarf and a neutron star or black hole

Gillanders, J. H., Sim, S. A. & Smartt, S. J., 01 Sept 2020, In: Monthly Notices of the Royal Astronomical Society. 497, 1, p. 246-262 17 p.

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24 Citations (Scopus)

Determining the $^{56}$Ni distribution of type Ia supernovae from observations within days of explosion

Magee, M. R., Maguire, K., Kotak, R., Sim, S. A., Gillanders, J. H., Prentice, S. J. & Skillen, K., 01 Feb 2020, (Early online date) In: Astronomy and Astrophysics.

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41 Citations (Scopus)

90 Downloads (Pure)

HOLISMOKES: I. Highly Optimised Lensing Investigations of Supernovae, Microlensing Objects, and Kinematics of Ellipticals and Spirals

Suyu, S. H., Huber, S., Cañameras, R., Kromer, M., Schuldt, S., Taubenberger, S., Ylldlrlm, A., Bonvin, V., Chan, J. H. H., Courbin, F., Nöbauer, U., Sim, S. A. & Sluse, D., 15 Dec 2020, In: Astronomy and Astrophysics. 644, 15 p., A162.

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51 Citations (Scopus)

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SNe Ia from double detonations: Impact of core-shell mixing on the carbon ignition mechanism

Gronow, S., Collins, C., Ohlmann, S. T., Pakmor, R., Kromer, M., Seitenzahl, I. R., Sim, S. A. & Röpke, F. K., 01 Mar 2020, In: Astronomy & Astrophysics. 635, 18 p.

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Stuart Sim

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