Zobrazeno 1 - 10
of 338
pro vyhledávání: '"Sargsyan S"'
Autor:
Amekhyan, A., Sargsyan, S.
We involve the galactic halo observational data to test the weak field General Relativity involving the cosmological constant. Using the data for 15 hydrogen (Hi) VLA super spirals and the Tully-Fisher relation we obtain constraints for each galaxy.
Externí odkaz:
http://arxiv.org/abs/2407.10656
We consider different observational effects to test modified gravity approach involving the cosmological constant in the common description of the dark matter and the dark energy. We obtain upper limits for the cosmological constant by studying the s
Externí odkaz:
http://arxiv.org/abs/2109.13053
Publikováno v:
Mod.Phys.Lett, 35, 2050295 (2020)
The sparsity parameter for clusters of galaxies is obtained in the context of $\Lambda$-gravity. It is shown that, the theoretical estimated values are within the reported error limits of the measured data. Thus, in the future the sparsity parameter
Externí odkaz:
http://arxiv.org/abs/2008.10463
Publikováno v:
EPJ Web of Conferences, Vol 58, p 02005 (2013)
Arrows of time - thermodynamical, cosmological, electromagnetic, quantum mechanical, psychological - are basic properties of Nature. For a quantum system-bath closed system the de-correlated initial conditions and no-memory (Markovian) dynamics are o
Externí odkaz:
https://doaj.org/article/197f11dce249469d861fb36e0e3c16b3
Autor:
De Paolis, F., Gurzadyan, A. V., Nucita, A. A., Gurzadyan, V. G., Qadir, A., Kashin, A., Amekhyan, A., Sargsyan, S., Jetzer, Ph., Ingrosso, G., Tahir, N.
Publikováno v:
A&A 629, A87 (2019)
Galactic halos are of great importance for our understanding of both the dark matter nature and primordial non-Gaussianity in the perturbation spectrum, a powerful discriminant of the physical mechanisms that generated the cosmological fluctuations o
Externí odkaz:
http://arxiv.org/abs/1908.07937
Publikováno v:
Mod.Phys.Lett. A 34, 1950308 (2019)
The contribution of the thermal dust component in galactic halo rotation is explored based on the microwave data of Planck satellite. The temperature asymmetry of Doppler nature revealed for several edge-on galaxies at several microwave frequencies i
Externí odkaz:
http://arxiv.org/abs/1907.01267
Autor:
Gurzadyan, V. G., De Paolis, F., Nucita, A. A., Kashin, A. L., Amekhyan, A., Sargsyan, S., Yegorian, G., Qadir, A., Ingrosso, G., Jetzer, Ph., Vetrugno, D.
Publikováno v:
A&A 609, A131 (2018)
This paper is a follow-up of a previous paper about the M82 galaxy and its halo based on Planck observations. As in the case of M82, so also for the M81 galaxy a substantial North-South and East-West temperature asymmetry is found, extending up to ga
Externí odkaz:
http://arxiv.org/abs/1710.04166
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
De Paolis, F., Gurzadyan, V. G., Nucita, A. A., Chemin, L., Qadir, A., Kashin, A. L., Khachatryan, H. G., Sargsyan, S., Yegorian, G., Ingrosso, G., Jetzer, Ph., Vetrugno, D.
Publikováno v:
A&A 593, A57 (2016)
We used Planck data to study the M33 galaxy and find a substantial temperature asymmetry with respect to its minor axis projected onto the sky plane. This temperature asymmetry correlates well with the HI velocity field at 21 cm, at least within a ga
Externí odkaz:
http://arxiv.org/abs/1607.08099
Autor:
Gurzadyan, V. G., De Paolis, F., Nucita, A. A., Ingrosso, G., Kashin, A. L., Khachatryan, H. G., Sargsyan, S., Yegorian, G., Jetzer, Ph., Qadir, A., Vetrugno, D.
Publikováno v:
A&A 582, A77 (2015)
Planck data towards the galaxy M82 are analyzed in the 70, 100 and 143 GHz bands. A substantial north-south and East-West temperature asymmetry is found, extending up to 1 degree from the galactic center. Being almost frequency-independent, these tem
Externí odkaz:
http://arxiv.org/abs/1509.05212