Astrophysics and Cosmology

This group gathers researchers working on astrophysics and cosmology topics. It covers theoretical, computational and observational skills, potentiating synergies between them to tackle a number of problems of current interest in the field. The main research areas are the physics of white dwarfs, neutron stars and black holes, the equation of state of dense hadronic matter, radio astronomy, detection and characterisation of exoplanets, dynamics of stellar and planetary systems, celestial mechanics, computational astrophysics, interplay between particle and gravitational physics, the origin of dark matter, dark energy, inflation, and the baryon asymmetry.

Current projects

Previous projects

Recent Publications

Papers

International Journals

1 - Spin in a planar relativistic fermion problem
A.S.de Castro, P. Alberto
Physics Letters A 404, 127412 (2021)

2 - Central configurations of the five-body problem with two isosceles triangles
Antonio Carlos Fernandes, Luis Fernando Mello, Bráulio Garcia, Lucas Ruiz dos Santos
J. Appl. Math. Phys. 72 (2021)

3 - Neutron stars within the Bogoliubov quark-meson coupling model
Aziz Rabhi, Constança Providência, Steven A. Moszkowski, João da Providência, Henrik Bohr
Phys. Rev. C 103, 035811 (2021)

4 - Revisiting the analysis of HW Virginis eclipse timing data. I. A frequentist data modeling approach and a dynamical stability analysis
Esmer, E.M., O. Baştürk, T.C. Hinse, S.O. Selam, ACM Correia
Astron. Astrophys. 648, A85 (2021)

5 - A Nonequilibrium Information Entropy Approach to Ternary Fission of Actinides
G. Röpke, J. B. Natowitz, H. Pais
Phys. Rev. C 103, L061601 (2021)

6 - Strong magnetic fields: neutron stars with an extended inner crust
Helena Pais, Bruno Bertolino, Jianjun Fang, Xiaopeng Wang, Constança Providência
Eur. Phys. J. A 57, 193-1-193-9 (2021)

7 - Phase diagram for strongly interacting matter in the presence of a magnetic field using the Polyakov–Nambu–Jona-Lasinio model with magnetic field dependent coupling strengths
João Moreira, Pedro Costa, Tulio E. Restrepo,
Eur. Phys. J. A (Invited contribution to the Topical Issue on "The QCD Phase Diagram in Strong Magnetic Fields") 57, 123-10 (2021)

8 - Six transiting planets and a chain of Laplace resonances in TOI-178
A. Leleu, Y. Alibert, N.C. Hara, M.J. Hooton, T.G. Wilson, P. Robutel, J.-B. Delisle, J. Laskar, S. Hoyer, C. Lovis, E.M. Bryant, E. Ducrot, J. Cabrera, L. Delrez, J.S. Acton, V. Adibekyan, R. Allart, C. Allende Prieto, ACM Correia
Astron. Astrophys. 649, A26 (2021)

9 - Towards a reliable effective field theory of inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, JG Rosa
Physics Letters B 813, 136055 (2021)

10 - New constraints on the planetary system around the young active star AU Mic. Two transiting warm Neptunes near mean-motion resonance
E. Martioli, G. Hébrard, A.C.M. Correia, J. Laskar, Lecavelier des Etangs
Astron. Astrophys. 649, A177 (2021)

11 - Thermal evolution of relativistic hyperonic compact stars with calibrated equations of state
Morgane Fortin, Adriana R. Raduta, Sidney Avancini, Constança Providência
Phys. Rev. D 103, 083004 (2021)

12 - Unveiling the nuclear matter EoS from neutron star properties: a supervised machine learning approach
Márcio Ferreira, Constança Providência
JCAP 07, 011 (2021)

13 - Hybrid stars with large strange quark cores constrained by GW170817
Márcio Ferreira, Renan Câmara Pereira, Constança Providência )
Phys. Rev. D 103, 123020 (2021)

14 - Critical properties of calibrated relativistic mean-field models for the transition to warm, nonhomogeneous nuclear and stellar matter
Olfa Boukari, Helena Pais, Sofija Antić, Constança Providência
Phys. Rev. C 103, 055804 (2021)

15 - Analytic continuation of nucleon electromagnetic form factors in the time-like region
P. Alberto , A. Drago, A. Mangoni, S. Moretti, S. Pacetti
J. Phys. G: Nucl. Part. Phys. 48, 085007 (2021)

16 - Top condensation model: a step towards the correct prediction of the Higgs mass
A. A. Osipov, B. Hiller, A. H. Blin, F. Palanca, J. Moreira, M. Sampaio
European Physical Journal C 80,2020, 1135, e-Print: 1906.09579 [hep-ph] C 80, 1135 (2020)

17 - Classical excluded volume of loosely bound light (anti) nuclei and their chemical freeze-out in heavy ion collisions
B. E. Grinyuk, K. A. Bugaev, Violetta Sagun, O. I. Ivanytskyi, D. L. Borisyuk, A. S. Zhokhin, G. M. Zinovjev, D. B. Blaschke, L. V. Bravina, E. E. Zabrodin, E. G. Nikonov, G. Farrar, S. Kabana, S. V. Kuleshov, A. V. Taranenko
International Journal of Modern Physics E 29, 2040009 (2020)

18 - Tidal evolution of the Pluto-Charon binary
Correia, ACM
Astron. Astrophys. 644, A94 (2020)

19 - Why do warm Neptunes present nonzero eccentricity?
ACM Correia, V Bourrier, JB Delisle
Astron. Astrophys. 635, A37 (2020)

20 - Can dark matter drive electroweak symmetry breaking?
C Cosme, JG Rosa, O Bertolami
Phys. Rev. D 102(6), 063507 (2020)

21 - Quark matter in light neutron stars
M Ferreira, RC Pereira, C Providencia
Phys. Rev. D 102(8), 083030 (2020)

22 - Effect of the crust on neutron star empirical relations
M Ferreira, C Providencia
Phys. Rev. D 102(10), 103003 (2020)

23 - Light element (Z=1,2) production from spontaneous ternary fission of $^{252}$Cf
G. R\"opke, J.B. Natowitz, H. Pais
Eur. Phys. J. A 56, 238 (2020)

24 - Andrade rheology in time-domain. Application to Enceladus dissipation of energy due to forced libration
Y Gevorgyan, G Boue, C Ragazzo, LS Ruiz, ACM Correia
Icarus 343, 113610 (2020)

25 - Discovery and characterization of the exoplanets WASP-148b and c: A transiting system with two interacting giant planets
G Hebrard, RF Diaz, ACM Correia, AC Cameron, J Laskar, D Pollacco, JM Almenara, DR Anderson, SCC Barros, I Boisse, AS Bonomo, F Bouchy, G Boue, P Boumis, DJA Brown, S Dalal, M Deleuil, ODS Demangeon, AP Doyle, CA Haswell, C Hellier, O
Astron. Astrophys. 640, A32 (2020)

26 - Improved method for the experimental determination of in-medium effects from heavy-ion collisions
Helena Pais, Rémi Bougault, Francesca Gulminelli, Constança Providência et al
J. Phys. G: Nucl. Part. Phys. 47, 105204 (2020)

27 - Low-density in-medium effects on light clusters from heavy-ion data
Helena Pais, Rémi Bougault, Francesca Gulminelli, Constança Providência, et al
Phys. Rev. Lett. 125, 012701 (2020)

28 - Neutron star inner crust: Effects of rotation and magnetic fields
Ivo Sengo, Helena Pais, Bruno Franzon, Constança Providência
Phys. Rev. D 102, 063013 (2020)

29 - Isotopic equilibrium constants for very low-density and low-temperature nuclear matter
J. B. Natowitz, H. Pais, G. Roepke, J. Gauthier, K. Hagel, M. Barbui, R. Wada
Phys. Rev. C 102, 064621 (2020)

30 - Magnetic field dependent ’t Hooft determinant extended Nambu–Jona-Lasinio model
João Moreira, Pedro Costa, and Tulio E. Restrepo
Phys. Rev. D 102, 014032-10 (2020)

31 - Second virial coefficients of light nuclear clusters and their chemical freeze-out in nuclear collisions
K. A. Bugaev, O. V. Vitiuk, B. E. Grinyuk, Violetta Sagun, N. S. Yakovenko, O. I. Ivanytskyi, G. M. Zinovjev, D. B. Blaschke, E. G. Nikonov, L. V. Bravina, E. E. Zabrodin, S. Kabana, S. V. Kuleshov, G. R. Farrar, E. S. Zherebtsova, A. V. Taranenko,
Eur. Phys. J. A 56, 293 (2020)

32 - Nonzero tensor condensates in cold quark matter within the three-flavor Nambu-Jona-Lasinio model with the Kobayashi-Maskawa-t Hooft interaction
A Kagawa, M Morimoto, Y Tsue, J da Providencia, C Providencia, M Yamamura
Int. J. Mod. Phys. E 29(6), 2050036 (2020)

33 - TOI-1338: TESS First Transiting Circumbinary Planet
VB Kostov, JA Orosz, AD Feinstein, WF Welsh, W Cukier, N Haghighipour, B Quarles, DV Martin, BT Montet, G Torres, AHMJ Triaud, T Barclay, P Boyd, C Briceno, AC Cameron, ACM Correia, EA Gilbert, S Gill, M Gillon, J Haqq-Misra, Hellier
Astron. J. 159(6), 253 (2020)

34 - Planetary system LHS 1140 revisited with ESPRESSO and TESS
J Lillo-Box, P Figueira, A Leleu, L Acuna, JP Faria, N Hara, NC Santos, ACM Correia, P Robutel, M Deleuil, D Barrado, S Sousa, X Bonfils, O Mousis, JM Almenara, N Astudillo-Defru, E Marcq, S Udry, C Lovis, F Pepe
Astron. Astrophys. 642, A121 (2020)

35 - Neutron Star Properties: Quantifying the Effect of the Crust-Core Matching Procedure
M. Ferreira, C. Providencia
Universe 6(11), 220 (2020)

36 - Hybrid stars from a three-flavor NJL model with two kinds of tensor condensates
M. Morimoto, Y. Tsue, J. da Providencia, C. Providencia, M. Yamamura
Int.J.Mod.Phys.E 29 (2020)

37 - Unveiling the correlations of tidal deformability with the nuclear symmetry energy parameters
T Malik, BK Agrawal, C Providencia, JN De
Phys. Rev. C 102(5), 052801 (2020)

38 - Relativistic hypernuclear compact stars with calibrated equations of state
Morgane Fortin, Adriana R. Raduta, Sidney Avancini, and Constança Providência
Phys. Rev. D 101, 034017 (2020)

39 - Spin polarizations under a pseudovector interaction between quarks with the Kobayashi-Maskawa-´t Hooft term in high density quark matter
M Morimoto, Y Tsue, J da Providencia, C Providencia, M Yamamura
Int. J. Mod. Phys. E 29(1), 2050003 (2020)

40 - Empirical constraints on the high-density equation of state from multimessenger observables
Márcio Ferreira, M. Fortin, Tuhin Malik, B. K. Agrawal, and Constança Providência
Phys. Rev. D 101, 043021 (2020)

41 - Neutron stars with large quark cores
Márcio Ferreira, Renan Câmara Pereira , Constança Providência
Phys. Rev. D. 101, 123030 (2020)

42 - Effect of bead characteristics on the fatigue life of shot peened Al 7475-T7351 specimens
N. Ferreira, J.S. Jesus, J.A.M. Ferreira, C. Capela, J.M. Costa, A.C. Batista
International Journal of Fatigue 134, 105521 (2020)

43 - Neutron stars: New constraints on asymmetric dark matter
O. Ivanytskyi, Violetta Sagun, and I. Lopes
Phys. Rev. D 102, 063028 (2020)

44 - Role of the conserved charges in the chiral symmetry restoration phase transition
Pedro Costa, Renan Câmara Pereira, and Constança Providência.
Phys. Rev. D 102, 054010-8 (2020)

45 - The strange critical endpoint and isentropic trajectories in an Extended PNJL Model with Eight Quark Interactions
Renan Câmara Pereira, João Moreira and Pedro Costa
Eur. Phys. J. A (Invited contribution to the Topical Issue on "Theory of hot matter and relativistic heavy-ion collisions"- THOR) 56, 214-12 (2020)

46 - Neutron star cooling within the equation of state with induced surface tension
S. Tsiopelas, Violetta Sagun
Particles 3, 693-705 (2020)

47 - Impact of the pulling rate on the redox state and magnetic domains of Fe-Si-O glass ceramic processed by LFZ method
S.A. Salehizadeh, N.M. Ferreira, M.S. Ivanov, V.A. Khomchenko, J.A. Paixão, F.M. Costa, M.A. Valente, M.P.F. Graça
Mater. Res. Bull. 131, 110972 (2020)

48 - Light clusters in warm stellar matter: calibrating the cluster couplings
Tiago Custódio, Alexandre Falcão, Helena Pais, Constança Providência, Francesca Gulminelli, Gerd Roepke
European Physical Journal A 56, 295 (2020)

49 - Asteroseismology: radial oscillations of neutron stars with realistic equation of state
Violetta Sagun, I. Lopes G. Panotopoulos
Phys. Rev. D 101, 063025 (2020)

Portuguese Journals

50 - Fontanários: brincando com a Física!
Constança Providência
Gazeta de Física 44, fasc 1, 42-44 (2021)

51 - É eletricidade ou magnetismo?
Constança Providência
Gazeta de Física Volume 43 / Fascículo 3/4, 32 (2021)

52 - Como se formam as ondas?
Constança Providência
Gazeta de Física 43 / Fascículo 1, 46 (2020)

53 - À descoberta dos exoplanetas!
Constança Providência
Gazeta de Física 42, Fascículo 4/5, 55 (2020)

54 - Quando estarão todos doentes?
Constança Providência
Gazeta de Física 43 / Fascículo 2, 38 (2020)

Proceedings

International Conferences

55 - Pasta Phases Within the QMC Model
G. Grams, A.M. Santos, P.K. Panda, C. Providência, D.P. Menezes
Springer Proc. Phys. 238, 649-652 (2020)

56 - Constraining dimension-six nonminimal Lorentz-violating electron-nucleon interactions with EDM physics
J.B. Araujo, A.H. Blin, M. Sampaio, M.M. Ferreira Jr
World Scientific, 8th Meeting on CPT and Lorentz Symmetry, Bloomington USA 2019, [CPT-19] (2020)

57 - Chemical freeze-out of light nuclei in high energy nuclear collisions and resolution of the hyper-triton chemical freeze-out puzzle
K.A. Bugaev, O.V. Vitiuk, B.E. Grinyuk, N.S. Yakovenko, E.S. Zherebtsova, Violetta Sagun, O.I. Ivanytskyi, D.O. Savchenko, L.V. Bravina, D.B. Blaschke, G.R. Farrar, S. Kabana, S.V. Kuleshov, E.G. Nikonov, A.V. Taranenko, E.E. Zabrodin, G.M. Zinovjev
J. Phys.: Conf. Ser., Proceedings of the 5th International Conference on Particle Physics and Astrophysics (ICPPA-2020), 5-9 October 2020, Moscow, Russian Federation 1690, 012123 (2020)

58 - Thermal evolution of neutron stars described within the equation of state with induced surface tension
S. Tsiopelas, Violetta Sagun
Astronomische Nachrichten 342, 332 (2020)

Communications

Invited

59 - On the eccentricity of warm Neptunes
Correia, ACM
1st Planet Systems Day @ IA, February 2, online meeting. (2021)

60 - The interplay between neutron stars and the equation of state
Constança Providência
SFB Colloquium, 03-12-2020, Technische Universitat Darmstadt, Germany (2020)

61 - Probing close-in planets internal structure with PLATO
Correia, ACM
PLATO ESP 2020, 30 November – 3 December, online meeting. (2020)

62 - Series of lectures on “Compact stars, equation of state of neutron stars and the NS-NS merger events”
Violetta Sagun
Oslo Winter School “Standard Model, Quantum Chromodynamics, Heavy Ion Collisions”, Skeikampen, Norway, 2 - 12 January (2020)

63 - Impact of dark matter on the neutron star properties
Violetta Sagun
Invited seminar at the Institute of High Energy Physics (HEPHY), Vienna, Austria, 17 November (2020)

64 - Neutron stars meet constraints from astrophysics, gravitation, high- and low- energy nuclear physics
Violetta Sagun
Invited seminar at the Lawrence Berkeley National Laboratory, Berkeley, USA, 7 May (2020)

65 - Neutron stars meet constraints from astrophysics, gravitation, high- and low- energy nuclear physics
Violetta Sagun
Invited seminar at the Monash Centre for Astrophysics (MoCA), Monash University, Melbourne, Australia, 22 May (2020)

Oral

66 - Tidal Evolution of the Pluto-Charon-Sun Triple
Correia, ACM
Triple Evolution and Dynamics 3, 22-25 March, virtual workshop (2021)

67 - Asynchronous and chaotic rotation for compact planetary systems
Correia, ACM
Exoplanets Orbits & Dynamics, 19-22 January, virtual workshop (2021)

68 - Evolution of the Pluto-Charon binary under tides
Correia, ACM
52nd Annual Meeting of the DDA, 17-21 May, virtual workshop (2021)

69 - How neutron stars can help us to constrain dark matter
Violetta Sagun, O. Ivanytskyi, I. Lopes
The Iberian Cosmology Meeting (IberiCOS 2021), University of Coimbra, Coimbra, 29 March - 1 April (2021)

70 - The impact of dark matter on compact stars
Violetta Sagun, O. Ivanytskyi, I. Lopes
The 57 Karpacz Winter School in Theoretical Physics, Karpacz, Poland, 13-19 June (2021)

71 - Asynchronous and chaotic rotation for compact planetary systems
Correia, ACM
Europlanet Science Congress 2020, 21 September – 9 October, online meeting. (2020)

72 - XIII Black Holes Workshop
João Rosa
Instituto Superior Técnico, Portugal. 25-27 June 2020 (2020)

73 - Fourteen billion years in thirty minutes
João Rosa
6th IDPASC/LIP PhD Students Workshop (online, Portugal 26, June 2020 (2020)

74 - Dark-matter admixed neutron stars
Violetta Sagun, O. Ivanytskyi, I. Lopes
at the IWARA2020 Video Conference - 9th International Workshop on Astronomy and Relativistic Astrophysics, 6-12 September (2020)

75 - Constraints on the fraction of cold fermionic dark matter particles inside the neutron stars
Violetta Sagun, O. Ivanytskyi, I. Lopes
at the ICPPA - 5th International Conference on Particle Physics and Astrophysics, 5-9 October (2020)

76 - Dark matter effect on the neutron star properties
Violetta Sagun, O. Ivanytskyi, I. Lopes
The 56 Karpacz Winter School in Theoretical Physics, Karpacz, Poland, 24 - 28 February (2020)

Poster

77 - Neutron star cooling within the equation of state with induced surface tension
S. Tsiopelas, Violetta Sagun
at the IWARA2020 Video Conference - 9th International Workshop on Astronomy and Relativistic Astrophysics, 6-12 September (2020)

Other

78 - Tooling4G – Minimize the Airflow Generated Noise on Automotive HVAC Systems
J. F. Caseiro, P. Alberto
White Papers – SHAPE Projects PRACE-6IP (2021)

79 - Spontaneous breaking of the Peccei-Quinn symmetry during warm inflation
JG Rosa, Luís B. Ventura
arXiv: 2105.05771 (2021)

80 - Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
Miguel Levy, JG Rosa, Luís B. Ventura
arXiv:2012.03988 (2021)

81 - Superradiant pion clouds around primordial black holes
Paulo B. Ferraz, Thomas W. Kephart, JG Rosa
arXiv:2004.11303 (2021)