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• W4308709874 abstract "Tolman VII (TVII) is an analytical model for the nonrotating perfect fluid sphere with a simple quadratic density profile where its value is zero at the surface and a finite critical density value at the center. Therefore, compared to another analytical model like the constant density star, TVII is more realistic. Except for the dominant energy condition (DEC), which is violated in the region near the star's center, the TVII satisfies all energy conditions. However, the causal condition is also violated for $mathcal{C}>0.26$, and the maximum compactness of the TVII is restricted, i.e., ${mathcal{C}}_{mathrm{max}}ensuremath{approx}0.38$. Here, we investigate the impacts of nonlocal gravity on the properties of the star of TVII within the range of the compactness of an ultracompact star ($0.33ensuremath{le}mathcal{C}ensuremath{le}0.44$). This nonlocal gravity version of TVII (NGTVII) is parametrized by the nonlocal parameters ($stackrel{texttildelow{}}{ensuremath{beta}}$) and the compactness ($mathcal{C}$). We have found that NGTVII can reach ${mathcal{C}}_{mathrm{max}}=0.43$ with ${stackrel{texttildelow{}}{ensuremath{beta}}}_{mathrm{max}}=3$ which is significantly more compact than TVII. The nonlocal density and pressure profile differs from the TVII, depending on the stars' compactness and nonlocal parameter. We have also found that for the relatively small value of $stackrel{texttildelow{}}{ensuremath{beta}}$ and the compactness, i.e., $mathcal{C}ensuremath{lesssim}0.31$, the causality condition and the DEC are not violated. We have also found that the NGTVII's effective potential in the interior can be larger and deeper than that of the TVII model, indicating the deceleration of the echo time. Moreover, using the effective potential of NGTVII, the quasinormal mode and gravitational echo are calculated using Bohr-Sommerfeld fitting and solving the time-dependent Reggae-Wheeler equation. We can infer that the NGVTII with the maximum compactness and nonlocal parameter values enables the existence of the ultracompact star with more trapped modes." @default.
• W4308709874 created "2022-11-14" @default.
• W4308709874 creator A5023788650 @default.
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• W4308709874 date "2022-11-10" @default.
• W4308709874 modified "2023-10-16" @default.
• W4308709874 title "Ultracompact object within a nonlocal Tolman VII model" @default.
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• W4308709874 cites W1779196862 @default.
• W4308709874 cites W1972429852 @default.
• W4308709874 cites W1984712472 @default.
• W4308709874 cites W1990199919 @default.
• W4308709874 cites W1998362570 @default.
• W4308709874 cites W1999347087 @default.
• W4308709874 cites W2006387446 @default.
• W4308709874 cites W2006552285 @default.
• W4308709874 cites W2013839381 @default.
• W4308709874 cites W2016434530 @default.
• W4308709874 cites W2062245131 @default.
• W4308709874 cites W2063256724 @default.
• W4308709874 cites W2070172322 @default.
• W4308709874 cites W2075650134 @default.
• W4308709874 cites W2076393922 @default.
• W4308709874 cites W2079003386 @default.
• W4308709874 cites W2081116973 @default.
• W4308709874 cites W2081555278 @default.
• W4308709874 cites W2082450121 @default.
• W4308709874 cites W2087447386 @default.
• W4308709874 cites W2094740723 @default.
• W4308709874 cites W2100168895 @default.
• W4308709874 cites W2104873160 @default.
• W4308709874 cites W2105632853 @default.
• W4308709874 cites W2109243620 @default.
• W4308709874 cites W2119220636 @default.
• W4308709874 cites W2121040900 @default.
• W4308709874 cites W2133088039 @default.
• W4308709874 cites W2133890384 @default.
• W4308709874 cites W2140900061 @default.
• W4308709874 cites W2154559339 @default.
• W4308709874 cites W2163037191 @default.
• W4308709874 cites W2222848970 @default.
• W4308709874 cites W2472479615 @default.
• W4308709874 cites W2513152708 @default.
• W4308709874 cites W2518822695 @default.
• W4308709874 cites W2595870466 @default.
• W4308709874 cites W2595937442 @default.
• W4308709874 cites W2602327970 @default.
• W4308709874 cites W2748990736 @default.
• W4308709874 cites W2798136330 @default.
• W4308709874 cites W2799342308 @default.
• W4308709874 cites W2802107891 @default.
• W4308709874 cites W2918199693 @default.
• W4308709874 cites W2937476228 @default.
• W4308709874 cites W2962876006 @default.
• W4308709874 cites W2991648146 @default.
• W4308709874 cites W3002202931 @default.
• W4308709874 cites W3012982140 @default.
• W4308709874 cites W3037203624 @default.
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• W4308709874 cites W3053262066 @default.
• W4308709874 cites W3085145219 @default.
• W4308709874 cites W3092596371 @default.
• W4308709874 cites W3098278091 @default.
• W4308709874 cites W3098660664 @default.
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• W4308709874 cites W3100445654 @default.
• W4308709874 cites W3100492014 @default.
• W4308709874 cites W3100583919 @default.
• W4308709874 cites W3100904038 @default.
• W4308709874 cites W3102777108 @default.
• W4308709874 cites W3103793974 @default.
• W4308709874 cites W3105780030 @default.
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• W4308709874 cites W3202775807 @default.
• W4308709874 cites W4224882566 @default.
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• W4308709874 doi "https://doi.org/10.1103/physrevd.106.104020" @default.
• W4308709874 hasPublicationYear "2022" @default.
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