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 - Bosonic dark matter in neutron stars and its effect on gravitational wave signal
D. R. Karkevandi, S. Shakeri, Violetta Sagun, O. Ivanytskyi
Phys. Rev. D 105, 023001 (2022)
2 - Evaporating primordial black holes, the string axiverse, and hot dark radiation
Marco Calzà, John March-Russell, João G. Rosa
Submitted not yet accepted (2022)
3 - The neutron star outer crust equation of state: a machine learning approach
Murarka Utsav Anil, Kinjal Banerjee, Tuhin Malik, Constança Providência
JCAP 01 (2022) 01, 045, 045 (2022)
4 - Spin in a planar relativistic fermion problem
A.S.de Castro, P. Alberto
Phys. lett., A 404, 127412 (2021)
5 - 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)
6 - 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)
7 - Radio astronomy and Space science in Azores: Enhancing the Atlantic VLBI infrastructure cluster
D Barbosa, B Coelho, S Anton, M Bergano, T Boekholt, ACM Correia, D Maia, J Pandeirada, V Ribeiro, J Adams, JP Barraca, D Gomes, B Morgado
Adv. Space Res. 68(7), 3064-3078 (2021)
8 - Thermal production of sexaquarks in heavy-ion collisions
D. Blaschke, L. Bravina, K. Bugaev, G. R. Farrar, B. Grinyuk, O. Ivanytskyi, S. Kabana, S. V. Kuleshov, I. K. Potashnikova, Violetta Sagun, A. Taranenko, O. V. Vitiuk, E. Zabrodin, X. Zhang, D. Zhou
Intern. J. Mod. Phys. A 36, 2141005 (2021)
9 - 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)
10 - A Nonequilibrium Information Entropy Approach to Ternary Fission of Actinides
G. Röpke, J. B. Natowitz, H. Pais
Phys. Rev. C 103, L061601 (2021)
11 - 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)
12 - An analytical model for tidal evolution in co-orbital systems. I. Application to exoplanets
J. Couturier, P. Robutel, A.C.M. Correia
Celest. Mech. Dyn. Astron. 133(8), 37 (2021)
13 - 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 57, 123-10 (2021)
14 - Induced surface and curvature tension equation of state for hadron resonance gas in finite volumes and its relation to morphological thermodynamics
K. A. Bugaev , O. V. Vitiuk , B. E. Grinyuk , P. P. Panasiuk , N. S. Yakovenko , E. S. Zherebtsova , Violetta Sagun , O. I. Ivanytskyi , L. V. Bravina , D. B. Blaschke , S. Kabana , S. V. Kuleshov , A. V. Taranenko , E. E. Zabrodin and G. M. Zinovjev
Intern. J. Mod. Phys. A 36, No. 34n35, 2141009 (2021)
15 - 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)
16 - Faint objects in motion: the new frontier of high precision astrometry
Malbet, F., Boehm, C., Alexandre C. M. Correia, et. al.
Exp. Astron. 51(3), 845-886 (2021)
17 - Towards a reliable effective field theory of inflation
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, JG Rosa
Phys. Lett. B 813, 136055 (2021)
18 - 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)
19 - Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
Miguel Levy, JG Rosa, Luís B. Ventura
J. High Energy Phys.. 12, 176 (2021)
20 - 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)
21 - Unveiling the nuclear matter EoS from neutron star properties: a supervised machine learning approach
Márcio Ferreira, Constança Providência
J. Cosmol. Astropart. Phys 7, 011 (2021)
22 - Constraints on high density equation of state from maximum neutron star mass
Márcio Ferreira, Constança Providência
Phys. Rev. D 104, 063006 (2021)
23 - Crust-core transition of a neutron star: effect of the temperature under strong magnetic fields
Márcio Ferreira, Aziz Rabhi, Constança Providência
Eur. Phys. J. A 57, 263 (2021)
24 - Hybrid stars with large strange quark cores constrained by GW170817
Márcio Ferreira, Renan Câmara Pereira, Constança Providência )
Phys. Rev. D 103, 123020 (2021)
25 - 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)
26 - 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)
27 - Determination of the symmetry energy from the neutron star equation of state
Pedro Barata de Tovar, Márcio Ferreira, Constança Providência
Phys. Rev. D 104, 123036 (2021)
28 - Binding energy shifts from heavy-ion experiments in a nuclear statistical equilibrium model
S. Mallik, H. Pais, F. Gulminelli
Eur. Phys. J. A 27, 262 (2021)
29 - Thermal evolution of neutron stars described within the equation of state with induced surface tension
S. Tsiopelas, V. Sagun
Astron. Nachrichten 342(1-2), 332-336 (2021)
30 - Light hyperclusters and hyperons in low-density hot stellar matter
Tiago Custódio, Helena Pais, Constança Providência
Phys. Rev. C 104, 035801 (2021)
Portuguese Journals
31 - Fontanários: brincando com a Física!
Constança Providência
Gazeta de Física 44, fasc 1, 42-44 (2021)
32 - É eletricidade ou magnetismo?
Constança Providência
Gazeta de Física Volume 43 / Fascículo 3/4, 32 (2021)
Proceedings
International Conferences
33 - Hybrid stars from a constrained equation of state
Constança Providência, Márcio Ferreira, Renan Pereira
to appear in AIP Conf Proc (2021)
34 - Evaporating primordial black holes, the string axiverse, and hot dark radiation
Marco Calzà
XVI Black Holes Workshop, University of Aveiro (2021)
35 - Kinematic reconstruction of extended theories of gravity at small and intermediate redshifts
Marco Calzà
15th IberiCOS meeting (2021)
Communications
Invited
36 - Neutron star properties from a constrained EoS
Constança Providência, Márcio Ferreira, Renan Pereira
vConf21 - A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021 - 2-6 August 2021 (2021)
37 - On the eccentricity of warm Neptunes
Correia, ACM
1st Planet Systems Day @ IA, February 2, online meeting. (2021)
38 - Evaporating primordial black holes, the string axiverse, and hot dark radiation
Marco Calzà
University of Trento (2021)
Oral
39 - New SST Optical Sensor of Pampilhosa da Serra: studies on image processing algorithms and multi-filter characterization of Space Debris
Coelho, B., Barbosa, D., Bergano, M., Correia, A.C.M., Freitas, J., Marques, P., Pandeirada, J., Ribeiro, V.
8th European Conference on Space Debris, 20-23 April (online meeting) (2021)
40 - Nonzero eccentricities of warm Neptunes
Correia, A.C.M.
PLATO Mission Conference, 11-15 October (online meeting) (2021)
41 - Asynchronous and chaotic rotation for compact planetary systems
Correia, A.C.M.
Multi-scale (time and mass) dynamics of space objects, 18-22 October, Iasi, Romania (online meeting) (2021)
42 - Acoplamento spin-órbita em sistemas planetários compactos
Correia, A.C.M.
XX Colóquio Brasileiro de Dinâmica Orbital, 6-10 December (online meeting) (2021)
43 - Evolution of the Pluto-Charon binary under tides
Correia, ACM
52nd Annual Meeting of the DDA, 17-21 May, virtual workshop (2021)
44 - Asynchronous and chaotic rotation for compact planetary systems
Correia, ACM
Exoplanets Orbits & Dynamics, 19-22 January, virtual workshop (2021)
45 - Tidal Evolution of the Pluto-Charon-Sun Triple
Correia, ACM
Triple Evolution and Dynamics 3, 22-25 March, virtual workshop (2021)
46 - Local solutions in modified gravity adopting ad hoc ansatz
Marco Calzà
Journal Club, University of Coimbra (2021)
47 - The Axiverse and how to probe it exploiting evaporating primordial black holes.
Marco Calzà
Journal Club, University of Coimbra (2021)
48 - The unified equation of state with induced surface tension consistent with astrophysical, gravitational, high- and low- energy nuclear physics data
Violetta Sagun, O. Ivanytskyi, Constança Providência
at the Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021 - ConfXIV, 2-6 August (2021)
49 - Neutron stars as dark matter probes
Violetta Sagun, O. Ivanytskyi, D. R. Karkevandi, S. Shakeri, I. Lopes
at the Modern Physics of Compact Stars and Relativistic Gravity, Yerevan, Armenia, 27-30 September (2021)
50 - 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)
51 - 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)
52 - Constraints on the fermionic dark matter from observations of neutron stars
Violetta Sagun, O. Ivanytskyi, I. Lopes
at the Particles and Nuclei International Conference - PANIC2021, online, 5-10 September (2021)
Poster
53 - Probing dark matter with neutron stars
Violetta Sagun, O. Ivanytskyi, D. R. Karkevandi, S. Shakeri, E. Giangrandi, I. Lopes
at the Gravitational Wave Physics and Astronomy Workshop (GWPAW 2021),
Hannover, Germany, 14-17 December (2021)
Other
54 - Ceres – o asteroide planeta anão
Correia, A.C.M.
Boletim da Associação dos Pupilos do Exército 262, 12 (2021)
55 - Observatório SKA
Correia, A.C.M.
Boletim da Associação dos Pupilos do Exército 260, 12 (2021)
56 - Tooling4G – Minimize the Airflow Generated Noise on Automotive HVAC Systems
J. F. Caseiro, P. Alberto
White Papers – SHAPE Projects PRACE-6IP (2021)
57 - Spontaneous breaking of the Peccei-Quinn symmetry during warm inflation
JG Rosa, Luís B. Ventura
arXiv: 2105.05771 (2021)
58 - Superradiant pion clouds around primordial black holes
Paulo B. Ferraz, Thomas W. Kephart, JG Rosa
arXiv:2004.11303 (2021)
