@Article{NunesCoelAraś:2020:LoPSJ0,
               author = "Nunes, Rafael da Costa and Coelho, Jaziel Gourlart and 
                         Ara{\'u}jo, Jos{\'e} Carlos Neves de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Weighing massive neutron star with screening gravity: a look on 
                         PSR J0740\ +\ 6620 and GW190814 secondary component",
              journal = "European Physical Journal C",
                 year = "2020",
               volume = "80",
               number = "12",
                pages = "1115",
                 note = "{Setores de Atividade: Pesquisa e desenvolvimento 
                         cient{\'{\i}}fico.}",
             keywords = "Estrela de Neutrons, Gravita{\c{c}}{\~a}o, teoria alternativa da 
                         gravita{\c{c}}{\~a}o.",
             abstract = "Neutron stars (NSs) are excellent natural laboratories to 
                         constrain gravity on strong field regime and nuclear matter in 
                         extreme conditions. Motivated by the recent discovery of a compact 
                         object with 2.59+0.08 \−0.09M in the binary merger 
                         GW190814, if this object was a NS, it serves as a strong 
                         constraint on the NS equation of state (EoS), ruling out several 
                         soft EoSs favored by GW170817 event. In this work, we revisit the 
                         question of the maximum mass of NSs considering a chameleon 
                         screening (thin-shell effect) on the NS mass-radius relation, 
                         where the microscopic physics inside the NS is given by realistic 
                         soft EoSs. We find that from appropriate and reasonable 
                         combination of modified gravity, rotation effects and realistic 
                         soft EoSs, that it is possible to achieve high masses and explain 
                         GW190814 secondary component, and in return also NSs like PSR 
                         J0740+6620 (the most NS massive confirmed to date). It is shown 
                         that gravity can play an important role in estimating maximum mass 
                         of NSs, and even with soft EoSs, it is possible to generate very 
                         high masses. Therefore, in this competition of hydrostatic 
                         equilibrium between gravity and pressure (from EoS choice), some 
                         soft EoSs, in principle, cannot be completely ruled out without 
                         first taking into account gravitational effects.",
                  doi = "10.1140/epjc/s10052-020-08695-0",
                  url = "http://dx.doi.org/10.1140/epjc/s10052-020-08695-0",
                 issn = "1434-6044",
                label = "lattes: 6217296674061205 3 NunesCoelArau:2020:LoPSJ0",
             language = "en",
           targetfile = "nunes_weigh.pdf",
        urlaccessdate = "28 abr. 2024"
}