Explanipedia

PROBLEMI RANOG RAZVOJA STIDA I KRIVICE U PSIHOANALITIČKIM TEORIJAMA Open

P. Jovanović · 2025

Dok vodeće akademske teorije emocionalnog razvoja stid i krivicu posmatraju kao emocije koje uključuju samosvest pojavljujući se kao poželjne posledice socijalizacije na kasnijim uzrastima, psihoanalitičke teorije ih opisuju kao rana nesve…

Analysis of indefinitely flat rotational velocity curve using non-linear density wave theory Open

Miroslava Vukčević, E. Bon, P. Jovanović · 2025

Flat rotational velocity curve out to 1 Mpc has been recently observed applying deprojection formula to infer the gravitational potential around isolated galaxies from weak gravitational lensing. Here, we focus on the theoretical self-cons…

The Significance of OCTA in Studying Vessel Density and Retinal Thickness in Individuals with Myopia Open

Marija Veselinović, Marija Trenkić-Božinović, Vladimir Čanadanović, P. Jovanović, Aleksandar M. Veselinović , et al. · 2025

Background and Objectives: This study explores the relationship between retinal structure, vascular densities (VD), and the progression of myopia, aiming to identify novel biomarkers for assessing myopia severity. Materials and Methods: A …

CONSTRAINTS ON GRAVITON MASS FROM S2-LIKE STAR ORBITS AROUND Sgr A* Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2025

Here we present our achieved results on the bounding graviton mass by the observed orbits of bright stars around Sgr A*. We used available observations of the S-star orbits in our Galactic center. By comparison of these stellar orbits with…

The baryonic Tully-Fisher relation and Fundamental Plane in the light of f(R) gravity Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2025

Here we use the samples of spiral and elliptical galaxies, in order to investigate theoretically some of their properties and to test the empirical relations, in the light of modified gravities. We show that the baryonic Tully-Fisher relat…

Significance of the preventive ultrasound diagnostics in the early detection of rare and aggressive thyroid carcinomas: Case report Open

Milena Jovanović, P. Jovanović, Marija Milinković, Duško Dunđerović, Ljubiša Jovanović · 2025

Introduction: Medullary thyroid carcinoma (MTC) is an aggressive tumor associated with a significantly poorer prognosis compared to other types of thyroid cancer. Doppler ultrasound and familiarity with the Thyroid Imaging Reporting and Da…

Influence of Solar Activity on Earth's Climate Open

P. Jovanović, V. Borka Jovanović, Salvatore Capozzıello, D. Borka · 2024

Here we reconsider some astrophysical, geophysical and meteorological indicators about the possible influence of solar activity on space and terrestrial weather. We used wavelet transforms to perform spectral analysis of several solar acti…

BOUNDS ON GRAVITON MASS FROM STELAR ORBITS AROUND Sgr Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2024

In this paper our achieved results on the bounding graviton mass by the observed stellar orbits around Sgr are given. By comparison of the observed orbits of bright stars in the Galactic center with their simulated orbits in Yukawa gr…

Probing the Nonlinear Density Wave Theory of Spiral Galaxies by Baryonic Tully–Fisher Relation Open

Miroslava Vukčević, Đorđe Savić, P. Jovanović · 2024

The baryonic mass–velocity relation provides an important test of different galaxy dynamics models such as Lambda–cold dark matter (ΛCDM) and alternatives like Modified Newtonian Dynamics (MOND). Novel nonlinear density wave theory with a …

The comparison of an optical and X-ray counterpart of subparsec supermassive binary black holes Open

P. Jovanović, Saša Simić, V. Borka Jovanović, D. Borka, Luka Č. Popović · 2024

In this paper, we study and compare the optical and X-ray counterparts of subparsec supermassive black hole binaries (SMBHBs). With that aim, we simulated the profiles of optical spectral lines emitted from the broad line region (BLR) as w…

Constraints on graviton mass from Schwarzschild precession in the orbits of S-stars around the Galactic Center Open

P. Jovanović, V. Borka Jovanović, D. Borka, A. F. Zakharov · 2024

In this paper we use a modification of the Newtonian gravitational potential with a non-linear Yukawa-like correction, as it was proposed by C. Will earlier to obtain new bounds on graviton mass from the observed orbits of S-stars around t…

Constraints on Graviton Mass from Schwarzschild Precession in the Orbits of S-Stars around the Galactic Center Open

P. Jovanović, V. Borka Jovanović, D. Borka, A. F. Zakharov · 2024

In this paper we use a modification of the Newtonian gravitational potential with a non-linear Yukawa-like correction, as it was proposed by C. Will earlier to obtain new bounds on graviton mass from the observed orbits of S-stars around t…

Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240 Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2023

Here we investigate the giant radio galaxy DA 240, which is a FR II source. Specifically, we investigate its flux density, as well as the spectral index distribution. For that purpose, we used publicly available data for the source: Leahy'…

Study of spectral index of giant radio galaxy from Leahy's Atlas: DA 240 Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2023

Here we investigate the giant radio galaxy DA 240, which is a FR II source. Specifically, we investigate its flux density, as well as the spectral index distribution. For that purpose, we used publicly available data for the source: Leahy'…

Flux densities and spectral indices of Relaxed Double radio galaxy 3C 84 Open

V. Borka Jovanović, D. Borka, P. Jovanović · 2023

Here we study the flux densities distribution at 1380, 4908 and 15365 MHz, as well as the radio spectral index of 3C 84, a Double Radio source Associated with Galactic Nucleus (DRAGN). 3C 84 is the dominant giant elliptical galaxy in the P…

Improvement of graviton mass constraints using GRAVITY's detection of Schwarzschild precession in the orbit of S2 star around the Galactic Center Open

P. Jovanović, V. Borka Jovanović, D. Borka, A. F. Zakharov · 2023

Here we study possible improvements of the existing constraints on the upper bound of graviton mass by the analysis of the stellar orbits around the SMBH at the GC in the framework of Yukawa gravity. A motivation for this study is a recent…

Bounds on graviton mass and constraining Yukawa-like gravitational potential from planetary motion in the solar system Open

D. Borka, V. Borka Jovanović, P. Jovanović · 2023

In this study we used the observed perihelion precession of planetary orbits in the Solar System in order to constrain theory of Yukawa-type gravity, and to bound mass of graviton. For that purpose we assumed that the precession angles of …

Geodesic equations in the weak field limit of general f(R) gravity theory Open

N.Dj. Lazarov, V. Borka Jovanović, D. Borka, P. Jovanović · 2023

In our work we presented the modified field equations generated by action with unspecified function f (R). Assuming spherical symmetry, we used the corresponding static Schwarzschild-like metric in the weak field limit. Also we considered …

Constraints on Yukawa gravity parameters from observations of bright stars Open

P. Jovanović, V. Borka Jovanović, D. Borka, A. F. Zakharov · 2022

In this paper we investigate a Yukawa gravity modification of the Newtonian gravitational potential in a weak field approximation. For that purpose we derived the corresponding equations of motion and used them to perform two-body simulati…

Velocity distribution of elliptical galaxies in the framework of Non-local Gravity model Open

D. Borka, V. Borka Jovanović, Salvatore Capozzıello, P. Jovanović · 2022

Spectral index distribution over radio lobes of 4C 14.11 using astrophysical data in FITS format Open

V. Borka Jovanović, D. Borka, Arsenije Arsenić, P. Jovanović · 2022

Estimating the Parameters of the Hybrid Palatini Gravity Model with the Schwarzschild Precession of S2, S38 and S55 Stars: Case of Bulk Mass Distribution Open

D. Borka, V. Borka Jovanović, Violeta N. Nikolić, N.Dj. Lazarov, P. Jovanović · 2022

We estimate the parameters of the Hybrid Palatini gravity model with the Schwarzschild precession of S-stars, specifically of the S2, S38 and S55 stars. We also take into account the case of bulk mass distribution near the Galactic Center.…

Influence of bulk mass distribution on orbital precession of S2 star in Yukawa gravity Open

P. Jovanović, D. Borka, V. Borka Jovanović, A. F. Zakharov · 2021

Possible effects of hybrid gravity on stellar kinematics in elliptical galaxies Open

V. Borka Jovanović, D. Borka, P. Jovanović, Salvatore Capozzıello · 2021

Constraining theories of gravity by fundamental plane of elliptical galaxies Open

Salvatore Capozzıello, V. Borka Jovanović, D. Borka, P. Jovanović · 2020

Constraining theories of gravity by fundamental plane of elliptical\n galaxies Open

Salvatore Capozzıello, V. Borka Jovanović, D. Borka, P. Jovanović · 2020

We show that fundamental plane of elliptical galaxies can be used to obtain\nobservational constraints on metric theories of gravity. Being it connected to\nglobal properties of ellipticals, it can fix parameters of modified gravity.\nSpec…

RETINAL PIGMENT EPITHELIUM TEARS IN YOUNGER PATIENTS: CAUSES AND CONSEQUENCES Open

Sonja Cekić, Jasmina Djordjević-Jocić, Branislav Tomašević, Ivan Jovanović, P. Jovanović , et al. · 2020

We present three different cases of patients with retinal pigment epithelium (RPE) tear: one case with choroidal osteoma, one with central serous chorioretinopathy (CSHR) and one with idiopathic polypoidal vasculopathy (IPCV).Fotodocumenta…

Possible observational signatures of supermassive black hole binaries in their Fe Kα line profiles Open

P. Jovanović, V. Borka Jovanović, D. Borka, Luka Č. Popović · 2020

Here we study the potential observational signatures of supermassive black\nhole binaries (SMBHBs) in the Fe K$\\alpha$ line profiles emitted from the\naccretion disks around their components. We simulated the Fe K$\\alpha$ line\nemission …

Observational tests of general relativity and alternative theories of gravity with Galactic Center observations using current and future large observational facilities Open

A. F. Zakharov, P. Jovanović, D. Borka, V. Borka Jovanović · 2020

It is established that there are supermassive black holes in centers of galaxies. A supermassive black hole with mass around 4 × 106 M⊙ is located at the Galactic Center. Such an approach for the Galactic Center looks rather natural, in sp…

Abnormalities in the thickness of the retinal ganglion cell/inner plexiform layer in age-related macular degeneration Open

Maja Živković, Vesna Jakšić, Marko Zlatanović, Sanja Sefić-Kasumović, Aleksandra Radosavljević , et al. · 2020

Introduction/Objective. The study aims to analyze the thickness of both the ganglion cell layer and the inner plexiform layer (GCL + IPL) among patients suffering from dry and wet form of age-related macular degeneration (AMD). Methods. On…

P. Jovanović YOU? Author Swipe