Academic Journal of

Astrophysics and Planets

[Abbr: Acd. Jr. AJAP]

Advancement and Challenges for Satellite Communication Systems

by Vijaylaxmi Ayyappan

The communication in the entire world is evolving and revolutionized with the satellite’s advent and it has also served mankind in many ways for example to forecast the weather, thereby reducing the effects of disasters. Provides broad range of communication services such as televisions, radio, astronomical signals etc. The linkage of satellite communication may be utilized for the purpose of fax and voice transmission to Aircraft on international paths. GPS, Global telephony, multimedia video and the connectivity of internet, earth imaging using the remote sensing satellites for monitoring the resources. The system of satellite communication has entered a point of transition from high cost to affordable cost. In this paper, the advancements in satellite communication, different applications of satellite communication has been explained in detail. Keywords: Satellite communication, International Aircraft, GPS

Dark Matter- A Telltale or Reality

by Aaratrika Basu

Our Milky Way gives the impression to be rooted in an extended dark matter halo, that is require to create a gravity in order to hold the stars and gas in the galaxy together and act like a binding force, although its presence is not hidden from the world, this paper mainly focuses on strengthening it more, considering the growth and gigantic experimental, and observational progress. As all the evidence are indirect and purely based upon gravitational effects of dark matter. Herein we will be discussing different front and opinion that astronomers have formed in order to define the presence of dark matter. Keywords: Dark Matter, Astronomers, Galaxy, Astro-Physics

Study on Kuiper Belt- Unexplored Reservoir of Solar System’s Secrets

by Anushka Patil

Kuiper belt is a very vast elliptical plane which is home to our dwarf planet Pluto as well as Haumea which is considered as minor planet and is a trans-Neptunian object-its orbit is beyond that of the farthest ice giant in the solar system. Haumea takes 3.9 hours to make a full rotation and it has by far the fastest spin, and thus calculates to uphold the shortest day in our solar system for any planet or KBOs. Kuiper Belt is still a very mysterious place, and we have a lot to learn about it and through it, about our solar system. Besides Haumea most of the Kuiper belt objects are way too pale for meaningful compositional study but the objects discovered till date assumed to hold the capability to reveal the secret of generation of our solar system as the studies done till date suggests that the residues and all of the other leftovers after and whilst formation of solar system dived into the Kuiper Belt. Since the atmospheric condition in the belt id dynamically less the objects might be still in its earliest of form rather being degraded with the time. Keywords: Kuiper Belt, Solar System, Haumea, Comets.

The Universe through the eyes of Hubble Space Telescope

by S. Chandrasekar

Hubble telescope, is known as Cassegrain reflector consists of two mirrors which are primary and secondary. This paper deals in the study of investigation of early history and launching of Hubble Space Telescope which was later known as James Webb Space Telescope. The most efficient group of astronomers and engineers are examining the universe through Hubble Space Telescope whose successor was placed at the Space Telescope Science Institute, situated in Baltimore. during1980s, the concept of successor use to work in the range of optical, ultraviolet and infrared wavelengths which were later considered impractical somewhere. Through this paper, researchers can have a broad horizon of knowledge regarding, how the planned destiny of the Next Generation Space Telescope were closely related to that of their parents. Keywords: Hubble Space Telescope, Next Generation Space Telescope

A Comparative Study on Black Holes

by Manish Singh Baghel

Black holes are the area of space with an intense gravitational field due to which no matter, not even light can escape from. The present study deals with the formulae of gravitational forces which are influencing the black hole and the light particle. This study also deals with calculation of their values for various observations. The review paper also comprises with the extract method of the thermodynamic quantities of eth solution of the Einstein equation is developed. Hence these strongly supports the validity and the comparative study of the black holes. The present paper deals with the entire comparison of the techniques and the method of the derived formulae used for the gravitational force and the existence of black hole. Keyword: Black holes, Einstein Equation, Thermodynamics, Gravitational force

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