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Understanding time has been quite a challenge for human being. Though we in general understand time but its implication for physics and the universe just make things very murky. In this paper we will discuss what is the relevance of time in the study of astronomy and how it impacts the Universe. The great physicist Einstein has to be credited for introducing Time as one of the dimensions and after that the whole concept of looking into time has totally changed. We have understood space and time have an integral collaborative part to play in the vast Universe. Not only that through general relativity we have seen how time interacts with gravity and how time can be distorted by gravity. From the simple watch on our hand time has taken a great leap and made a mark of its own. Not to say the behaviour of time in certain celestial bodies still makes us wonder are we missing some aspect of time. Time acts peculiarly inside a Black Hole and forget Singularity as the concept itself puzzles our knowledge of physics. The concept of time as one of the dimensions has opened a lot of new avenues of re-search but also has bought with its lot of unanswered questions. It does not stop here when we try to analyse past, present and future with time though theoretically may be very easy to understand but once we add physics into its things get a bit complicated. The stars that we see in the night sky is actually past whereas the person travelling in space is future and we are present. This paper will try to see if events can be placed in time and how light brings those events into our understanding. It must be understood that any event that is observed by human beings is due to the fact that light is falling on that object. In Big Bang several events happened in the beginning before the commencement of photon or light that does not mean time had not started. So, it is clear that light and time is not correlated though for human beings to look into an event light is of course needed. This paper will try to analyses the time and light dilation in a Black Hole and how that influences the concept of time. Also, this paper will try to understand how much more research is required to understand the whole concept of light, time and Black Hole.



2019 ◽  
Vol 487 (4) ◽  
pp. 4603-4614 ◽  
Author(s):  
Y Tsapras ◽  
A Cassan ◽  
C Ranc ◽  
E Bachelet ◽  
R Street ◽  
...  

ABSTRACT We present the analysis of stellar binary microlensing event OGLE-2015-BLG-0060 based on observations obtained from 13 different telescopes. Intensive coverage of the anomalous parts of the light curve was achieved by automated follow-up observations from the robotic telescopes of the Las Cumbres Observatory. We show that, for the first time, all main features of an anomalous microlensing event are well covered by follow-up data, allowing us to estimate the physical parameters of the lens. The strong detection of second-order effects in the event light curve necessitates the inclusion of longer-baseline survey data in order to constrain the parallax vector. We find that the event was most likely caused by a stellar binary-lens with masses $M_{\star 1} = 0.87 \pm 0.12 \, \mathrm{M}_{\odot }$ and $M_{\star 2} = 0.77 \pm 0.11 \, \mathrm{M}_{\odot }$. The distance to the lensing system is 6.41 ± 0.14 kpc and the projected separation between the two components is 13.85 ± 0.16 au. Alternative interpretations are also considered.



2018 ◽  
Vol 481 (3) ◽  
pp. 3348-3356 ◽  
Author(s):  
Steven A Balbus ◽  
Andrew Mummery


2011 ◽  
Vol 4 (3) ◽  
pp. 21-36
Author(s):  
Jairo Conde-Gómez ◽  
Luis-Carlos Mantilla-Figueroa ◽  
Julián-Francisco Naranjo-Vesga ◽  
Nelson Sánchez-Rueda

The integration of Conventional Petrography, SEM, Rare Earth Element geochemistry (REE) and Fluid Inclusions analysis (FI), in the fracture fillings at the Rosablanca Formation (Middle Magdalena Valley basin), make it possible to relate opening and filling events in the veins with hydrocarbon migration processes.Petrographic and SEM data indicate that the veins are fracture filling structures, with three types of textures:1) Granular aggregates of calcite (GA); 2) Elongated granular aggregates of calcite (EGA); and 3) Fibrous aggregates of calcite and dolomite (FA). The textural relationship suggests that GA must have been formed in an environment of widespread extension of the basin, while EGA and FA must have been formed in a compressive environment. The geochemical analyses of REE carried out in the dominant fill of the veins (GA) indicate that these fillings must have been formed in a closed system (intraformational fluid movement) for the drilling well Alfa-1, while in the drilling wells Alfa-2 and Alfa 3, these fills (GA) must have been formed in a characteristic environment of open system (transformational fluid movement). Two pulses of hydrocarbon migration were identified through the study of fluid inclusions: In the first event, light hydrocarbons and aqueous fluids (H2O-NaCl-CaCl2) migrated trough the primary porosity and fractures at temperatures between 60ºC- 90ºC. In the second event, light hydrocarbons associated with aqueous fluids (H2O-NaCl-CaCl2) migrated through fractures at temperatures between 70ºC - 120ºC. Data obtained in this investigation will strengthen the knowledge about the hydrocarbon migration history and entrapment in the Middle Magdalena Valley basin (VMM) particularly in the lower Cretaceous age reservoirs. 



2008 ◽  
Vol 56 (14) ◽  
pp. 1791-1796 ◽  
Author(s):  
R. Vasundhara
Keyword(s):  




1966 ◽  
Vol 22 (2) ◽  
pp. 583-591 ◽  
Author(s):  
J. Ronald Gentile ◽  
Lowell M. Schipper

College students were preselected on the personality variables need Achievement (nAch) and manifest anxiety (Anx) to form a 3 by 3 factorial arrangement and to relate these measures to probability-learning, decisionmaking, and risk-taking behaviors. After receiving 90 training trials on each of three green lights which had probabilities of 1/6, 1/2, and 5/6 of being followed by a red event light (probability-learning), Ss were asked to make decisions about the predictive reliabilities of these lights when they occurred in combinations or singly, while the red light was covered (decision-making). Ss were then given a zero expected value gambling game and a double-or-nothing final bet. Neither personality variable showed a consistent relationship to probability-learning, decision-making, or risk-taking behavior according to various criteria.



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