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Research Articles (Physics): Recent submissions

  • Polarimetric properties of Event Horizon Telescope targets from ALMA 
    Goddi, Ciriaco; Marti-Vidal, Ivan; Messias, Hugo; Bower, Geoffrey C.; Broderick, Avery E.; Dexter, Jason; Marrone, Daniel P.; Moscibrodzka, Monika; Nagai, Hiroshi; Algaba, Juan Carlos; Asada, Keiichi; Crew, Geoffrey B.; Gomez, José L.; Impellizzeri, C. M. Violette; Janssen, Michael; Kadler, Matthias; Krichbaum, Thomas P.; Lico, Rocco; Matthews, Lynn D.; Nathanail, Antonios; Ricarte, Angelo; Ros, Eduardo; Younsi, Ziri; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Anantua, Richard; Azulay, Rebecca; Baczko, Anne-Kathrin; Ball, David; Baloković, Mislav; Barrett, John; Benson, Bradford A.; Bintley, Dan; Blackburn, Lindy; Blundell, Raymond; Boland, Wilfred; Bouman, Katherine L.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broguiere, Dominique; Bronzwaer, Thomas; Byun, Do-Young; Carlstrom, John E.; Chael, Andrew; Chan, Chi-kwan; Chatterjee, Shami; Chatterjee, Koushik; Chen, Ming-Tang; Chen (陈永军), Yongjun; Chesler, Paul M.; Cho, Ilje; Christian, Pierre; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger (IOP Publishing, 2021-03)
    Please read abstract in the article.
  • The effects of 167 MeV Xe26+ swift heavy ions irradiation on chemical vapour deposited silicon carbide 
    Thabethe, Thabsile Theodora; Adeojo, Samuel Adedigba; Mirzayeva, M.N.; Skuratov, V.A.; Njoroge, Eric Gitau; Odutemowo, Opeyemi Shakirah; Hlatshwayo, Thulani Thokozani (Elsevier, 2022-09)
    Please read abstract in the article.
  • The origin of irreversibility and thermalization in thermodynamic processes 
    Roduner, Emil; Kruger, T.P.J. (Tjaart) (Elsevier, 2022-01)
    Understanding the origin of irreversibility in thermodynamics has been a fundamental scientific challenge and puzzle for nearly a century. Initially, the discussions related to classical thermodynamic systems, but recently ...
  • Real-time feedback-driven single-particle tracking : a survey and perspective 
    Van Heerden, Bertus; Vickers, Nicholas A.; Kruger, T.P.J. (Tjaart); Andersson, Sean B. (Wiley, 2022-07)
    Real-time feedback-driven single-particle tracking (RT-FD-SPT) is a class of techniques in the field of single-particle tracking that uses feedback control to keep a particle of interest in a detection volume. These methods ...
  • Broadband multi-wavelength properties of M87 during the 2017 Event Horizon Telescope campaign 
    Algaba, Juan Carlos; Anczarski, J.; Asada, K.; Balokovic, M.; Chandra, S.; Cui, Y.-Z.; Falcone, A.D.; Giroletti, M.; Goddi, Ciriaco; Hada, K.; Haggard, D.; Jorstad, S.; Kaur, A.; Kawashima, T.; Keating, G.; Kim, J.-Y.; Kino, M.; Komossa, S.; Kravchenko, E.V.; Krichbaum, T.P.; Lee, S.-S.; Lu, R.-S.; Lucchini, M.; Markoff, S.; Neilsen, J.; Nowak, M.A.; Park, J.; Principe, G.; Ramakrishnan, V.; Reynolds, M.T.; Sasada, M.; Savchenko, S.S.; Williamson, K.E.; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Anantua, Richard; Azulay, Rebecca; Baczko, Anne-Kathrin; Ball, David; Barrett, John; Bintley, Dan; Benson, Bradford A.; Blackburn, Lindy; Blundell, Raymond; Boland, Wilfred; Bouman, Katherine L.; Bower, Geoffrey C.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broderick, Avery E.; Broguiere, Dominique; Bronzwaer, Thomas; Byun, Do-Young; Carlstrom, John E.; Chael, Andrew; Chan, Chi-kwan; Chatterjee, Shami; Chatterjee, Koushik; Chen, Ming-Tang; Chesler, Paul M.; Cho, Ilje; Christian, Pierre; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Crew, Geoffrey B.; Cruz-Osorio, Alejandro; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dexter, Jason; Doeleman, Sheperd S.; Eatough, Ralph P.; Falcke, Heino; Farah, Joseph; Fish, Vincent L.; Fomalont, Ed; Ford, H. Alyson; Fraga-Encinas, Raquel; Friberg, Per; Fromm, Christian M.; Fuentes, Antonio; Galison, Peter; Gammie, Charles F.; García, Roberto; Gentaz, Olivier; Georgiev, Boris; Gold, Roman; Gomez, José L.; Gomez-Ruiz, Arturo I.; Gu, Minfeng; Gurwell, Mark; Hecht, Michael H.; Hesper, Ronald; Ho, Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang, Lei; Hughes, David H.; Ikeda, Shiro; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Janssen, Michael; Jeter, Britton; Jiang, Wu; Jimenez-Rosales, Alejandra; Johnson, Michael D.; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Kettenis, Mark; Kim, Dong-Jin; Kim, Jongsoo; Kim, Junhan; Koay, Jun Yi; Kofuji, Yutaro; Koch, Patrick M.; Koyama, Shoko; Kramer, Michael; Kramer, Carsten; Kuo, Cheng-Yu; Lauer, Tod R.; Levis, Aviad; Li, Yan-Rong; Li, Zhiyuan; Lindqvist, Michael; Lico, Rocco; Lindahl, Greg; Liu, Jun; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent; Lonsdale, Colin; MacDonald, Nicholas R.; Mao, Jirong; Marchili, Nicola; Marrone, Daniel P.; Marscher, Alan P.; Marti-Vidal, Ivan; Matsushita, Satoki; Matthews, Lynn D.; Medeiros, Lia; Menten, Karl M.; Mizuno, Izumi; Mizuno, Yosuke; Moran, James M.; Moriyama, Kotaro; Moscibrodzka, Monika; Muller, Cornelia; Musoke, Gibwa; Mejías, Alejandro Mus; Nagai, Hiroshi; Nagar, Neil M.; Nakamura, Masanori; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Nathanail, Antonios; Ner, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Okino, Hiroki; Olivares, Hector; Ortiz-León, Gisela N.; Oyama, Tomoaki; Ozel, Feryal; Palumbo, Daniel C. M.; Patel, Nimesh; Pen, Ue-Li; Pesce, Dominic W.; Pietu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Porth, Oliver; Potzl, Felix M.; Prather, Ben; Preciado-López, Jorge A.; Psaltis, Dimitrios; Pu, Hung-Yi; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Rezzolla, Luciano; Ricarte, Angelo; Ripperda, Bart; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Rose, Mel; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruszczyk, Chet; Rygl, Kazi L. J.; Sanchez, Salvador; Sanchez-Argüelles, David; Savolainen, Tuomas; Schloerb, F. Peter; Schuster, Karl-Friedrich; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Sun, He; Tazaki, Fumie; Tetarenko, Alexandra J.; Tiede, Paul; Tilanus, Remo P. J; Titus, Michael; Toma, Kenji; Torne, Pablo; Trent, Tyler; Traianou, Efthalia; Trippe, Sascha; Bemmel, Ilse van; Van Langevelde, Huib Jan; Van Rossum, Daniel R.; Wagner, Jan; Ward-Thompson, Derek; Wardle, John; Weintroub, Jonathan; Wex, Norbert; Wharton, Robert; Wielgus, Maciek; Wong, George N.; Wu, Qingwen; Yoon, Doosoo; Young, André; Young, Ken; Younsi, Ziri; Yuan, Feng; Yuan, Ye-Fei; Zensus, J. Anton; Zhao, Guang-Yao; Zhao, Shan-Shan (American Astronomical Society, 2021-04-14)
    In 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for ...
  • Integrable hierarchies, Hurwitz numbers and a branch point field in critical topologically massive gravity 
    Mvondo-She, Yannick (SciPost Foundation, 2022-04-19)
    We discuss integrable aspects of the logarithmic contribution of the partition function of cosmological critical topologically massive gravity. On one hand, written in terms of Bell polynomials which describe the statistics ...
  • What to feed or what not to feed‑that is still the question 
    Lech, James C.; Dorfsman, Sophia I.; Repas, Zoltan; Kruger, T.P.J. (Tjaart); Gyalai, Ingrid Melinda; Boros, Laszlo G. (Springer, 2021-11-20)
    INTRODUCTION : This review addresses metabolic diversities after grain feeding of cattle using artificial total mixed ration (TMR), in place of pasture-based feeding. OBJECTIVES : To determine how grain feeding impairs the ...
  • Dynamical spin chains in 4D N = 2 SCFTs 
    Pomoni, Elli; Rabe, Randle; Zoubos, Konstantinos (Springer, 2021-08-24)
    This is the first in a series of papers devoted to the study of spin chains capturing the spectral problem of 4d N = 2 SCFTs in the planar limit. At one loop and in the quantum plane limit, we discover a quasi-Hopf ...
  • Optimal quantum channels 
    Duvenhage, Rocco de Villiers (American Physical Society, 2021-09-07)
    A method to optimize the cost of a quantum channel is developed. The goal is to determine the cheapest channel that produces prescribed output states for a given set of input states. This is essentially a quantum version ...
  • High-energy asymmetric supercapacitor based on nickel cobalt oxide (NiCo2O4) nanostructure material and activated carbon derived from cocoa pod 
    Oyedotun, Kabir Oyeniran; Mirghni, Abdulmajid Abdallah; Fasakin, Oladepo; Tarimo, Delvina Japhet; Kitenge, Vianney Ngoyi; Manyala, Ncholu I. (American Chemical Society, 2021-12)
    Please read abstract in the article.
  • Diffusion and segregation of Sr in glassy carbon : model and analysis 
    Malherbe, Johan B.; Odutemowo, Opeyemi Shakirah (Elsevier, 2021-12)
    Please read abstract in the article.
  • Measurement of L-shell X-ray production cross sections in 89Y, 158Gd and 209Bi due to 0.3 MeV/u – 1.0 MeV/u 12C ions 
    Ejeh, Ernest Ochai; Hlatshwayo, Thulani Thokozani; Madhuku, M.; Legodi, M.; Msimanga, M. (Elsevier, 2021-11)
    Please read abstract in the article.
  • Changes in the mechanical, structural and electrical properties of glassy carbon due to strontium and silver co-implantation and annealing 
    Odutemowo, Opeyemi Shakirah; Malherbe, Johan B.; Limbach, R.; Wondraczek, L.; Wendler, E.; Undisz, A.; Njoroge, Eric Gitau; Idisi, D.O.; Dhlamini, M.S. (Elsevier, 2021-01)
    Please read abstract in the article.
  • Investigating structural changes and surface modification in glassy carbon induced by xenon ion implantation and heat treatment 
    Ismail, M.Y.A. (Mahjoub); Abdalla, Zaki Adam Yousif; Njoroge, Eric Gitau; Odutemowo, Opeyemi Shakirah; Malherbe, Johan B.; Hlatshwayo, Thulani Thokozani; Wendler, E.; Aftab, J.; Younis, H. (Elsevier, 2022-07)
    In order to ascertain the suitability of glassy carbon as a material for encapsulation of nuclear waste, glassy carbon was implanted with Xe and the structural changes and surface modification were investigated before and ...
  • MeerKAT-64 discovers wide-spread tidal debris in the nearby NGC 7232 galaxy group 
    Namumba, Brenda; Koribalski, B.S.; Jozsa, G.I.G.; Lee-Waddell, K.; Jones, M.G.; Carignan, Claude; Verdes-Montenegro, Lourdes; Ianjamasimanana, Roger; De Blok, W. J.G.; Cluver, M.; Garrido, J.; Sanchez-Exposito, S.; Ramaila, Athanaseus J.T.; Thorat, K.; Andati, Lexy A.L.; Hugo, B.; Kleiner, D.; Kamphuis, P.; Serra, P.; Smirnov, O.M.; Maccagni, F.M.; Makhathini, Sphesihle; Molnar, D.Cs.; Perkins, Simon; Ramatsoku, M.; White, S.V.; Loi, Francesca (Oxford University Press, 2021-08)
    Please read abstract in the article.
  • Anomalous gas in ESO 149-G003 : a MeerKAT-16 view 
    Jozsa, G.I.G.; Thorat, K.; Kamphuis, P.; Sebokolodi, Lerato; Maina, Eric K.; Wang, Jing; Pieterse, Danielle L.A.; Groot, Paul; Ramaila, Athanaseus J.T.; Serra, P.; Andati, Lexy A.L.; De Blok, W. J.G.; Hugo, B.; Kleiner, D.; Maccagni, F.M.; Makhathini, Sphesihle; Molnar, D.Cs.; Ramatsoku, M.; Smirnov, O.M.; Bloemen, Steven; Paterson, Kerry; Vreeswijk, Paul; McBride, Vanessa; Klein-Wolt, Marc; Woudt, Patrick; Kording, Elmar; Le Poole, Rudolf; Goedhart, Sharmila; Passmoor, Sean S.; Serylak, Maciej; Dettmar, Ralf-Jurgen (Oxford University Press, 2021-02)
    ESO 149-G003 is a close-by, isolated dwarf irregular galaxy. Previous observations with the ATCA indicated the presence of anomalous neutral hydrogen (⁠HI⁠) deviating from the kinematics of a regularly rotating disc. We ...
  • A new look at old friends – I. Imaging classical radio galaxies with uGMRT and MeerKAT 
    Fanaroff, Bernie L.; Lal, Dharam V.; Venturi, Tiziana; Smirnov, Oleg M.; Bondi, Marco; Thorat, Kshitij; Bester, Landman H.; Jozsa, Gyula I.G.; Kleiner, Dane; Loi, Francesca; Makhathini, Sphesihle; White, S.V. (Oxford University Press, 2021-08)
    We have undertaken a systematic study of FR I and FR II radio galaxies with the upgraded Giant Metrewave Radio Telescope (uGMRT) and MeerKAT. The main goal is to explore whether the unprecedented few μJy sensitivity reached ...
  • The extended H i halo of NGC 4945 as seen by MeerKAT 
    Ianjamasimanana, Roger; Koribalski, B.S.; Jozsa, Gyula I.G.; Kamphuis, Peter; De Blok, W. J.G.; Kleiner, Dane; Namumba, Brenda; Carignan, Claude; Dettmar, Ralf-Jurgen; Serra, Paolo; Smirnov, Oleg M.; Thorat, Kshitij; Hugo, Benjamin V.; Ramaila, Athanaseus J.T.; Maina, Eric; Maccagni, Filippo M.; Makhathini, Sphesihle; Andati, Lexy A.L.; Molnar, Daniel Cs.; Perkins, Simon; Loi, Francesca; Ramatsoku, M.; Atemkeng, Marcellin (Oxford University Press, 2022-06)
  • MIGHTEE-HI : discovery of an Hi-rich galaxy group at z=0.044 with MeerKAT 
    Ranchod, Shilpa; Deane, Roger; Ponomareva, Anastasia A.; Blecher, Tariq; Frank, Bradley S.; Jarvis, Matt J.; Maddox, Natasha; Mulaudzi, Wanga; Glowacki, Marcin; Hess, Kelley M.; Tudorache, Madalina; Verdes-Montenegro, Lourdes; Adams, Nathan J.; Bowler, Rebecca A.A.; Collier, Jordan D.; Taylor, Russ (Oxford University Press, 2021-09)
    Please read abstract in the article.
  • MeqSilhouette v2: spectrally resolved polarimetric synthetic data generation for the event horizon telescope 
    Natarajan, Iniyan; Deane, Roger; Martí-Vidal, Ivan; Roelofs, Freek; Janssen, Michael; Wielgus, Maciek; Blackburn, Lindy; Blecher, Tariq; Perkins, Simon; Smirnov, Oleg M.; Davelaar, Jordy; Moscibrodzka, Monika; Chael, Andrew; Bouman, Katherine L.; Kim, Jae-Young; Bernardi, Gianni; Bemmel, Ilse van; Falcke, Heino; Ozel, Feryal; Psaltis, Dimitrios (Oxford University Press, 2022-05)
    We present MeqSilhouette v2.0 (MeqSv2), a fully polarimetric, time-and frequency-resolved synthetic data generation software for simulating millimetre (mm) wavelength very long baseline interferometry (VLBI) observations ...