CONSTRAINING SCALAR-TENSOR GRAVITY MODELS BY S2 STAR ORBITS AROUND THE GALACTIC CENTER

Vesna Borka Jovanović, Predrag Jovanović, Duško Borka, Salvatore Capozziello, Stefania Gravina, Anna D’Addio

DOI Number
https://doi.org/10.2298/FUPCT1901011B
First page
011
Last page
020

Abstract


The aim of our investigation is to derive a particular theory among the class of scalar-tensor(ST) theories of gravity, and then to test it by studying kinematics and dynamics of S-stars around supermassive black hole (BH) at Galactic Center (GC). We also  discuss the Newtonian limit of this class of ST theories of gravity, as well as its parameters. We compare the observed orbit of S2 star with our simulated orbit which we obtained theoretically with the derived ST potential and constrained the parameters. Using the obtained best fit parameters we calculated orbital precession of S2 star in ST gravity,and found that it has the same direction as in General Relativity (GR), but causes much larger pericenter shift.

Keywords

modified theories of gravity, black holes, methods: analytical, methods: numerical

Full Text:

PDF

References


Adkins, G. S. and McDonnell, J., 2007. Phys. Rev. D75, 082001.

Borka, D., Capozziello, S., Jovanović, P. and Borka Jovanović, V., 2016. Astropart. Phys. 79, 41.

Borka, D., Jovanović, P., Borka Jovanović, V. and Zakharov, A. F., 2012. Phys. Rev. D85, 124004.

Borka, D., Jovanović, P., Borka Jovanović, V. and Zakharov, A. F., 2013. J. Cosmol. Astropart. P. 11, 050.

Borka Jovanović, V., Capozziello, S., Jovanović, P. and Borka D., 2016. Phys. Dark Universe 14, 73.

Capozziello, S., 2002. Int. J. Mod. Phys. D 11, 483.

Capozziello, S. and de Laurentis M., 2011. Physics Reports, vol. 509, 167.

Capozziello, S., Borka, D., Jovanović, P. and Borka Jovanović, V., 2014. Phys. Rev. D90, 044052.

Capozziello, S., Cardone, V. F., Carloni, S. and Troisi, A., 2003. Int. J. Mod. Phys. D 12, 1969.

Capozziello, S. and Faraoni, V., 2011. Beyond Einstein Gravity: A Survey of Gravitational Theories for Cosmology and Astrophysics, Fundamental Theories of Physics. vol. 170, Springer, New York.

Capozziello, S., Jovanović, P., Borka Jovanović, V. and Borka, D., 2017. Journal of Cosmology and Astroparticle Physics 06, 044.

Capozziello, S., Lambiase, G., Sakellariadou, M., Stabile, A. and Stabile, An., 2015. Phys. Rev. D 91, 044012.

Capozziello, S. and de Laurentis, M., 2012. Ann. Phys. 524, 545.

Capozziello, S., de Ritis, R., Rubano, C. and Scudellaro, P., 1996. La Rivista del Nuovo Cimento 19, 1.

Capozziello, S. and de Ritis, R., 1993. Phys. Lett. A 177, 1.

Capozziello, S. and de Ritis, R., 1994. Class. Quantum Grav. 11, 107.

Carroll, S. M., Duvvuri, V., Trodden, M. and Turner, M. S., 2004. Phys. Rev. D 70, 043528.

Chu, D. S., Do, T., Hees, A. et al., 2018. Astrophysical Journal 854, 12.

Clifton, T., 2006. Alternative Theories of Gravity. University of Cambridge.

Clifton, T., Ferreira, P. G., Padilla, A. and Skordis, C., 2012. Physics Reports, vol. 513, 1.

D’Addio, A., 2017. Testing Theories of Gravity by Sgr A*, Master Thesis, University of Naples ”Federico II”, Italy.

D’Addio, A., Capozziello, S., Jovanović, P. and Borka Jovanović, V., 2018. Publ. Astron. Obs. Belgrade 98, 109.

De Laurentis, M., De Martino, I. and Lazkoz, R., 2018. Eur. Phys. J. C 78, 916.

De Laurentis, M., De Martino, I. and Lazkoz, R., 2018. Phys. Rev. D 97, 104068.

Dialektopoulos, K. F., Borka, D., Capozziello, S., Borka Jovanović, V. and Jovanović, P., 2019. Phys. Rev. D 99, 044053.

Genzel, R., Eisenhauer, F. and Gillessen, S., 2010. Rev. Mod. Phys. 82, 3121.

Ghez, A. M., Morris, M., Becklin, E. E., Tanner, A. and Kremenek, T., 2000. Nature 407, 349.

Ghez, A. M., Salim, S., Weinberg, N. N., Lu, J. R., Do, T., Dunn, J. K., Matthews, K., Morris, M. R., Yelda, S., Becklin, E. E., Kremenek, T., Milosavljević, M. and Naiman, J., 2008. Astrophys. J. 689, 1044.

Gillessen, S., Eisenhauer, F., Fritz, T. K., Bartko, H., Dodds-Eden, K., Pfuhl, O., Ott, T. and Genzel, R., 2009. Astrophys. J. 707, L114.

Gillessen, S., Eisenhauer, F., Trippe, S., Alexander, T., Genzel, R., Martins, F. and Ott, T., 2009. Astrophys. J. 692, 1075.

Gillessen, S., Genzel, R., Fritz, T. K. et al., 2012. Nature 481, 51.

Gillessen, S., Plewa, P. M., Eisenhauer, F. et al., 2017. Astrophys. J. 837, 30.

Gravina, S., Capozziello, S., Borka, D. and Borka Jovanović, V., 2018. Publ. Astron. Obs. Belgrade 98, 129.

Gravina, S., 2017. The Galactic Center as a Gravitational Laboratory, Master Thesis, University of Naples ”Federico II”, Italy.

Hees, A., Do, T., Ghez, A. M. et al., 2017. Phys. Rev. Lett. 118, 211101.

Iorio, L., 2010. Mon. Not. R. Astron. Soc. 401, 2012.

Leon, G. and Saridakis E. N., 2011. Class. Quantum Grav. 28, 065008.

Meyer, L., Ghez, A. M., Schödel, R. et al., 2012. Science 338, 84.

Nojiri, S. and Odintsov, S. D., 2011. Phys. Rep. 505, 59.

Schödel, R., Ott, T., Genzel, R. et al., 2002. Nature 419, 694.

Sotiriou, T. P. and Faraoni, V., 2010. Rev. Mod. Phys. 82, 451.

Zakharov, A. F., Borka, D., Borka Jovanović, V. and Jovanović, P., 2014. Adv. Space Res. 54, 1108.

Zakharov, A. F., Jovanović, P., Borka, D. and Borka Jovanović, V., 2016. J. Cosmol. Astropart. P. 5, 045.

Zakharov, A. F., Jovanović, P., Borka, D. and Borka Jovanović, V., 2019. J. Cosmol. Astropart. P. 4, 050.


Refbacks

  • There are currently no refbacks.


ISSN 0354-4656 (print)

ISSN 2406-0879 (online)