Stability analysis and control of nonlinear thermoacoustic systems with multiple deterministic and stochastic sources by a Green’s function approach (2025)
Thesis
Arabi, S. Stability analysis and control of nonlinear thermoacoustic systems with multiple deterministic and stochastic sources by a Green’s function approach. (Thesis). Keele University. https://keele-repository.worktribe.com/output/1109590

Thermoacoustic instabilities result from the interaction between heat and sound in a confined space, and they pose challenges due to self-sustained high amplitude oscillations. This study advances an analytical approach based on a tailored Green’s fu... Read More about Stability analysis and control of nonlinear thermoacoustic systems with multiple deterministic and stochastic sources by a Green’s function approach.

The Complex Star Formation History of the Halo of NGC 5128 (Cen A) (2024)
Journal Article
Aghdam, S. T., Javadi, A., Hashemi, S., Abdollahi, M., van Loon, J. T., Khosroshahi, H., Golshan, R. H., Saremi, E., & Saberi, M. (2024). The Complex Star Formation History of the Halo of NGC 5128 (Cen A). Astrophysical Journal, 972(1), Article 47. https://doi.org/10.3847/1538-4357/ad57c0

NGC 5128 (Cen A) is the nearest giant elliptical galaxy and one of the brightest extragalactic radio sources in the sky, boasting a prominent dust lane and jets emanating from its nuclear supermassive black hole. In this paper, we construct the star... Read More about The Complex Star Formation History of the Halo of NGC 5128 (Cen A).

TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit (2024)
Journal Article
Alqasim, A., Grieves, N., Rosário, N. M., Gandolfi, D., Livingston, J. H., Sousa, S., Collins, K. A., Teske, J. K., Fridlund, M., Egger, J. A., Cabrera, J., Hellier, C., Lanza, A. F., Van Eylen, V., Bouchy, F., Oelkers, R. J., Srdoc, G., Shectman, S., Günther, M., Goffo, E., …Yee, S. W. (2024). TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit. Monthly Notices of the Royal Astronomical Society, 533(1), 1-26. https://doi.org/10.1093/mnras/stae1767

We report the spectroscopic confirmation and fundamental properties of TOI$-$757 b, a mini$-$Neptune on a 17.5$-$d orbit transiting a bright star ($V\, =\, 9.7$ mag) discovered by the TESS mission. We acquired high$-$precision radial velocity measure... Read More about TOI–757 b: an eccentric transiting mini–Neptune on a 17.5–d orbit.

NGTS-30b/TOI-4862b: An ~1 Gyr old 98-day transiting warm Jupiter (2024)
Journal Article
Battley, M. P., Collins, K. A., Ulmer-Moll, S., Quinn, S. N., Lendl, M., Gill, S., Brahm, R., Hobson, M. J., Osborn, H. P., Deline, A., Faria, J. P., Claringbold, A. B., Chakraborty, H., Stassun, K. G., Hellier, C., Alves, D. R., Ziegler, C., Anderson, D. R., Apergis, I., Armstrong, D. J., …Zhao, Y. (2024). NGTS-30b/TOI-4862b: An ~1 Gyr old 98-day transiting warm Jupiter. Astronomy & Astrophysics, 686, Article A230. https://doi.org/10.1051/0004-6361/202449307

Context. Long-period transiting exoplanets bridge the gap between the bulk of transit- and Doppler-based exoplanet discoveries, providing key insights into the formation and evolution of planetary systems. The wider separation between these planets a... Read More about NGTS-30b/TOI-4862b: An ~1 Gyr old 98-day transiting warm Jupiter.

BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts (2024)
Journal Article
Freckelton, A. V., Sebastian, D., Mortier, A., Triaud, A. H. M. J., Maxted, P. F. L., Acuña, L., Armstrong, D. J., Battley, M. P., Baycroft, T. A., Boisse, I., Bourrier, V., Carmona, A., Coleman, G. A. L., Cameron, A. C., Cortés-Zuleta, P., Delfosse, X., Dransfield, G., Duck, A., Forveille, T., French, J. R., …Willett, E. (2024). BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts. Monthly Notices of the Royal Astronomical Society, 531(4), 4085-4098. https://doi.org/10.1093/mnras/stae1405

Planets orbiting binary systems are relatively unexplored compared to those around single stars. Detections of circumbinary planets and planetary systems offer a first detailed view into our understanding of circumbinary planet formation and dynamica... Read More about BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts.

Planets observed with CHEOPS: Two super-Earths orbiting the red dwarf star TOI-776 (2024)
Journal Article
Fridlund, M., Georgieva, I. Y., Bonfanti, A., Alibert, Y., Persson, C. M., Gandolfi, D., Beck, M., Deline, A., Hoyer, S., Olofsson, G., Wilson, T. G., Barragán, O., Fossati, L., Mustill, A. J., Brandeker, A., Hatzes, A., Florén, H.-G., Simola, U., Hooton, M. J., Luque, R., …Walton, N. A. (2024). Planets observed with CHEOPS: Two super-Earths orbiting the red dwarf star TOI-776. Astronomy & Astrophysics, 684, Article A12. https://doi.org/10.1051/0004-6361/202243838

Context. M-dwarf stars are the most common of potential exoplanet host stars in the Galaxy. It is therefore very important to understand planetary systems orbiting such stars and to determine the physical parameters of such planets with high precisio... Read More about Planets observed with CHEOPS: Two super-Earths orbiting the red dwarf star TOI-776.

A Galactic Eclipse: The Small Magellanic Cloud Is Forming Stars in Two Superimposed Systems (2024)
Journal Article
Murray, C. E., Hasselquist, S., Peek, J. E. G., Lindberg, C. W., Almeida, A., Choi, Y., Craig, J. E. M., Dénes, H., Dickey, J. M., Di Teodoro, E. M., Federrath, C., Gerrard, I. A., Gibson, S. J., Leahy, D., Lee, M.-Y., Lynn, C., Ma, Y. K., Marchal, A., McClure-Griffiths, N. M., Nidever, D., …van Loon, J. T. (2024). A Galactic Eclipse: The Small Magellanic Cloud Is Forming Stars in Two Superimposed Systems. Astrophysical Journal, 962(2), Article 120. https://doi.org/10.3847/1538-4357/ad1591

The structure and dynamics of the star-forming disk of the Small Magellanic Cloud (SMC) have long confounded us. The SMC is widely used as a prototype for galactic physics at low metallicity, and yet we fundamentally lack an understanding of the stru... Read More about A Galactic Eclipse: The Small Magellanic Cloud Is Forming Stars in Two Superimposed Systems.

Sustainable supercapacitor with a natural rubber-based electrolyte and natural graphite-based electrodes (2023)
Journal Article
Perera, K., Vidanapathirana, K., Adams, L. J., & Balakrishnan, N. (2023). Sustainable supercapacitor with a natural rubber-based electrolyte and natural graphite-based electrodes. Electrochemical Science Advances, Article e2300025. https://doi.org/10.1002/elsa.202300025

Supercapacitors are at the forefront of energy storage devices due to their ability to fulfill quick power requirements. However, safety and cost are important parameters for their real-world applications. Green materials-based electrodes and electro... Read More about Sustainable supercapacitor with a natural rubber-based electrolyte and natural graphite-based electrodes.

The EDIBLES survey: VII. A survey of C2 and C3 in interstellar clouds (2023)
Journal Article
Fan, H., Rocha, C. M. R., Cordiner, M., Linnartz, H., Cox, N. L. J., Farhang, A., Smoker, J., Roueff, E., Ehrenfreund, P., Salama, F., Foing, B. H., Lallement, R., MacIsaac, H., Kulik, K., Sarre, P., van Loon, J. T., & Cami, J. (2024). The EDIBLES survey: VII. A survey of C2 and C3 in interstellar clouds. Astronomy & Astrophysics, 681, Article A6. https://doi.org/10.1051/0004-6361/202243910

Context. Small linear carbon chain radicals such as C2 and C3 act as both the building blocks and dissociation fragments of larger carbonaceous species. Their rotational excitation traces the temperature and density of local environments. However, th... Read More about The EDIBLES survey: VII. A survey of C2 and C3 in interstellar clouds.

Extreme dynamics of wave groups on jet currents (2023)
Journal Article
Slunyaev, A. V., & Shrira, V. I. (2023). Extreme dynamics of wave groups on jet currents. Physics of Fluids, 35(12), Article 126606. https://doi.org/10.1063/5.0180658

Rogue waves are known to be much more common on jet currents. A possible explanation was put forward in Shrira and Slunyaev [“Nonlinear dynamics of trapped waves on jet currents and rogue waves,” Phys. Rev. E 89, 041002(R) (2014)] for the waves trapp... Read More about Extreme dynamics of wave groups on jet currents.

TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary (2023)
Journal Article
Hagelberg, J., Nielsen, L. D., Attia, O., Bourrier, V., Pearce, L., Venturini, J., Winn, J. N., Bouchy, F., Bouma, L. G., Briceño, C., Collins, K. A., Davis, A. B., Eastman, J. D., Evans, P., Falk, B., Grieves, N., Guerrero, N. M., Hellier, C., Jones, M. I., Latham, D. W., …Ziegler, C. (2023). TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary. Astronomy & Astrophysics, 679, Article A70. https://doi.org/10.1051/0004-6361/202244940

We report the discovery of a hot Jupiter on a 3.28-day orbit around a 1.08 M⊙ G0 star that is the secondary component in a loose binary system. Based on follow-up radial velocity observations of TOI-858 B with CORALIE on the Swiss 1.2 m telescope and... Read More about TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary.

The Nuclear Reaction Network WinNet (2023)
Journal Article
Reichert, M., Winteler, C., Korobkin, O., Arcones, A., Bliss, J., Eichler, M., Frischknecht, U., Fröhlich, C., Hirschi, R., Jacobi, M., Kuske, J., Martínez-Pinedo, G., Martin, D., Mocelj, D., Rauscher, T., & Thielemann, F.-K. (2023). The Nuclear Reaction Network WinNet. The Astrophysical Journal Supplement, 268(2), Article 66. https://doi.org/10.3847/1538-4365/acf033

We present the state-of-the-art single-zone nuclear reaction network WinNet, which is capable of calculating the nucleosynthetic yields of a large variety of astrophysical environments and conditions. This ranges from the calculation of the primordia... Read More about The Nuclear Reaction Network WinNet.

The Role of Thermoviscous and Thermocapillary Effects in the Cooling and Gravity-Driven Draining of Molten Free Liquid Films (2023)
Journal Article
Alahmadi, H., & Naire, S. (2023). The Role of Thermoviscous and Thermocapillary Effects in the Cooling and Gravity-Driven Draining of Molten Free Liquid Films. Fluids, 8(5), Article 153. https://doi.org/10.3390/fluids8050153

We theoretically considered two-dimensional flow in a vertically aligned thick molten liquid film to investigate the competition between cooling and gravity-driven draining, which is relevant in the formation of metallic foams. Molten liquid in films... Read More about The Role of Thermoviscous and Thermocapillary Effects in the Cooling and Gravity-Driven Draining of Molten Free Liquid Films.

A one-dimensional model for axisymmetric deformations of an inflated hyperelastic tube of finite wall thickness (2023)
Journal Article
Fu. (2023). A one-dimensional model for axisymmetric deformations of an inflated hyperelastic tube of finite wall thickness. Journal of the Mechanics and Physics of Solids, 175, Article 105276. https://doi.org/10.1016/j.jmps.2023.105276

We derive a one-dimensional (1d) model for the analysis of bulging or necking in an inflated hy?perelastic tube of finite wall thickness from the three-dimensional (3d) finite elasticity theory by
applying the dimension reduction methodology propose... Read More about A one-dimensional model for axisymmetric deformations of an inflated hyperelastic tube of finite wall thickness.

Limb darkening measurements from TESS and Kepler light curves of transiting exoplanets (2023)
Journal Article
Maxted. (2023). Limb darkening measurements from TESS and Kepler light curves of transiting exoplanets. Monthly Notices of the Royal Astronomical Society, 3723-3735. https://doi.org/10.1093/mnras/stac3741

Inaccurate limb-darkening models can be a significant source of error in the analysis of the light curves for transiting exoplanet and eclipsing binary star systems. To test the accuracy of published limb-darkening models, I have compared limb-darken... Read More about Limb darkening measurements from TESS and Kepler light curves of transiting exoplanets.

The Gaia-ESO Survey: Preparing the ground for 4MOST and WEAVE galactic surveys (2023)
Journal Article
Nepal, S., Guiglion, G., de Jong, R., Valentini, M., Chiappini, C., Steinmetz, M., Ambrosch, M., Pancino, E., Jeffries, R., Bensby, T., Romano, D., Smiljanic, R., Dantas, M., Gilmore, G., Randich, S., Bayo, A., Bergemann, M., Franciosini, E., Jiménez-Esteban, F., Jofré, P., …Zaggia, S. (2023). The Gaia-ESO Survey: Preparing the ground for 4MOST and WEAVE galactic surveys. Astronomy & Astrophysics, 671, Article A61. https://doi.org/10.1051/0004-6361/202244765

Context. Originating from several sources (Big Bang, stars, cosmic rays) and being strongly depleted during stellar lifetime, the lithium element is of great interest as its chemical evolution in the Milky Way is not yet well understood. To help cons... Read More about The Gaia-ESO Survey: Preparing the ground for 4MOST and WEAVE galactic surveys.

Do Causality Violations Initiating a Compactly Generated Cauchy Horizon Require Exotic Matter? (2023)
Book Chapter
Austin, J. (2023). Do Causality Violations Initiating a Compactly Generated Cauchy Horizon Require Exotic Matter?. In Hidden Aspects of Time. Cambridge Scholars Publishing

This short paper summarises the proof that a causality violation formed from a bounded region requires matter that violates the null energy condition. Therefore the answer to the question in the title is yes. This is one of the results on which Steph... Read More about Do Causality Violations Initiating a Compactly Generated Cauchy Horizon Require Exotic Matter?.

Is Mind-Body Physicalism Really Compatible with Modern Physics? (2023)
Book Chapter
Austin, J. (2023). Is Mind-Body Physicalism Really Compatible with Modern Physics?. In Hidden Aspects of Time. Cambridge Scholars Publishing

If we take seriously literal interpretations of quantum theory and general relativity then the question posed in the title is no. This article highlights where incompatibilities arise by considering our experience in the context of modern physics. Im... Read More about Is Mind-Body Physicalism Really Compatible with Modern Physics?.

Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM (2023)
Journal Article
Rustamkulov, Z., Sing, D. K., Mukherjee, S., May, E. M., Kirk, J., Schlawin, E., Line, M. R., Piaulet, C., Carter, A. L., Batalha, N. E., Goyal, J. M., López-Morales, M., Lothringer, J. D., MacDonald, R. J., Moran, S. E., Stevenson, K. B., Wakeford, H. R., Espinoza, N., Bean, J. L., Batalha, N. M., …Zieba, S. (2023). Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM. Nature, 614, 659–663. https://doi.org/10.1038/s41586-022-05677-y

Transmission spectroscopy1,2,3 of exoplanets has revealed signatures of water vapor, aerosols, and alkali metals in a few dozen exoplanet atmospheres4,5. However, these previous inferences with the Hubble and Spitzer Space Telescopes were hindered by... Read More about Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM.

The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. V. The Star Formation History of Sagittarius Dwarf Irregular Galaxy Derived from Long-period Variable Stars (2023)
Journal Article
Van Loon, J. (2023). The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. V. The Star Formation History of Sagittarius Dwarf Irregular Galaxy Derived from Long-period Variable Stars. Astrophysical Journal, https://doi.org/10.3847/1538-4357/aca471

We conducted an optical monitoring survey of the Sagittarius dwarf irregular galaxy (SagDIG) during the period of 2016 June–2017 October, using the 2.5 m Isaac Newton Telescopeat La Palama. Our goal was to identify long-period variable stars (LPVs),... Read More about The Isaac Newton Telescope Monitoring Survey of Local Group Dwarf Galaxies. V. The Star Formation History of Sagittarius Dwarf Irregular Galaxy Derived from Long-period Variable Stars.