Agenda Solstice 2020

Posted on : June 13, 2020 | post in : General Knowledge |Comments Off on Agenda Solstice 2020 |

1st ESAN Solstice Conference June 20 2020

Coordinators: Abebe Kebede, Kassahun Betre, Dejenie Zewdie Date & Time:June 20, 2020 , 2020 8:00 AM EST-Contact: abkebede@gmail.com
Time Topic Presenter
Astrophysics with Sound Wanda Diaz
Th Future of Space Travel Dereje Seifu
Ethiopia Scaling New Height Using Space Based Information: ETRSS-1 Tsegaye Demsis, Ghoin Ashenafi
Aerospace Technology and it’s Impacts on Socio-economics and Geo-politics Joseph Shiferaw
From the Book of Enoch to ETRSS-1- Traditions and languages of Ethiopian Astronomy Abebe Kebede
Postgraduate students presentations
Teleparallel gravity as an alternative to standard model of cosmology Shambel Sahlu Akalu (PhD Research)
Tilahun Getachew Woreta, (PhD Research)
Properties of Inside-Out Assembly of Galaxies at Low Redshift Dejene Zewdie Woldeyes (PhD Research)
Closing

Abstracts

Astrophysics with Sound (Wanda Diaz)

Any sound, whether produced by a musical instrument or not can be described as a variation of air pressure traveling to the ear. The duration of each vibrational period determines the pitch of the sound, whereas waveform characteristics determine its timbre. The ear is able to process sounds in such a way that both pitch and timbre of each individual sound are traced.  This may imply that the ear may discriminate these sounds in terms of their period duration as well as their waveform. We sonified the time series of times series  data from a concert of satellites: ACE, WIND, GOES, UlISES to  analyze the frequency content of the data for Cosmic Ray Intensity (CRI), Sunspot number, Solar and Galactic Cosmic rays, and geomagnetic activity.  to listen to  spectral indexes to physical processes in the plasma (e.g., turbulent energy cascade).”    Our work promises to provide a way to enrich current data analysis techniques and reach a complete, consistent picture of possible wave turbulence dynamics in the solar wind  both short (pre–steady-state) and long (steady-state) times. In the future it would be interesting to engineer other ways to approach the data multi sensorially so for example in a time efficient manner study and identify other phenomena like,  for example studies of anisotropic turbulence, perhaps by paying attention to the dissipation scale or the driving force, to identify quenches between different turbulent states. This work begun thanks to,  Abebe and Ethiopia trusting that I could do a presentation at the University of Gonder.  Hopefully it will humbly contribute to create a productivity model that is away from biases, preventing for funding agencies and research institutions to take seriously different ways to produce the science.  One example of a moving forward is the work in Argentina.

The Future of Space Travel- From a physicist perspective Dereje Seifu Morgan State University

Humans are born explorers, and the three main reasons for that are survival, in search of a better life, and out of curiosity. The number of stars in the universe is ten times more than the number of grains of sand on Earth. Our current civilization, which started when the concept of the atomic theory, was postulated by Democritus some 2400 (twenty-four hundred) years ago. We believe in about 100 years from now by the 21st century, our civilization will be interplanetary, which is level zero civilization. The human race, for its survival, needs to develop space travel technology beyond interplanetary fully. It needs to move to interstellar and then to intergalactic, stages 1 and 2 civilizations, respectively. The dire need for the development of space travel technology includes the following dangerous situation that could wipe out the human race. It consists of an asteroid impact, virus pandemic, climate change, pollution, AI revolution, nuclear war, etc. To get to stage zero civilization that is interplanetary space travel, we need to develop smart materials to build more robust space vehicles. To get to the next stages 1 and 2, interstellar and intergalactic space travel technologies, we need extraordinary technology. It is a belief held by many scientists that this extraordinary technology will only come from extraordinary progress in the sciences, such as branches of science as quantum mechanics. Quantum mechanics explains phenomenons believed to be forbidden processes in classical physics. These phenomenons include quantum entanglement, tunneling, causality, locality, nature of reality, duality, superposition, and quantum scattering. Out of this phenomenon, quantum entanglement will lead us to a new space travel technology of quantum teleportation. This space travel technology will, I hope, transit us to stages 1 and 2 space technologies, interstellar and intergalactic, respectively. -Dr. Dereje Seifu is a Professor of Physics and President of EPSNA.

Ethiopian Astronomy from Book of Enoch to ETRSS-1 (Abebe Kebede)

Key Proposals: Ethiopianization/Africanization of STEM-The case of Astronomy Indigenous knowledge- Developing conventions for translations and transliterations Astronomy and Space Science Vocabulary Conventions. In this presentation we will show a piece of the larger Ethiopian astronomy tradition that I call Ethioipc astronomy, and propose approaches to develop the language of STEM.  The Ethiopians have a tradition of star lore s and legends. In the distant past the knowledge of astronomy and mathematics was abundant. Books such as the mysteries of heaven and earth, the book of Enoch and Abu shaker are devoted to this knowledge. There is a large body of indigenous knowledge of astronomy that people use to keep time. In this talk we will discuss possible conventions for translations and align STEM words, expressions, natural and empirical laws in indigenous languages.

Ethiopia Scaling New Height Using Space Based Information: ETRSS-1

Tsegaye D. Lemma3,4, Solomon Belay Tessema1,2, Abdissa Yilma Tiky2 , Milliyard Likesa Shanko 3,4, Yilkal Chane Eshet3,4, Dinaol Zelalem Gadisa3,4, Tsegazeab H/Gebrieal Assgedom3,4,Melaku Muka Mulatu3,4, Yonas Negash Mekonnen3,4, Eshet Tesfaye Tafes3,4, Dawit Kassaw Gedefaw3,4 Corresponding author: Tsegaye Demsis Lemma (tsegayed@essti.gov.et) 1-Ethiopian Space Science and Technology Institute (ESSTI), Entoto Observatory and Research Center (EORC), Department of Astronomy and Astrophysics Research & Development, P.O. Box 33679, Addis Ababa, Ethiopia 2-Ethiopian Space Science and Technology Institute (ESSTI), Entoto Observatory and Research Center (EORC) & Aeronautics and Astronautics Center, P.O. Box 33679, Addis Ababa, Ethiopia 3-Ethiopian Space Science and Technology Institute (ESSTI), Aeronautics and Astronautics Center, Department of Satellite Research, Development and O-perations, P.O. Box 33679, Addis Ababa, Ethiopia 4-Satellite Ground Control and Application Unit, P.O. Box 33679, Addis Ababa, Ethiopia Abstract The advancement of space driven product provides a unique viewpoint for understanding our living planet and providing benefits for society. Earth observation satellites (EO) provide information on the atmosphere, biosphere, surface and sublevel ground information of earths’ features. EO satellites can benefit many areas of society, including environment and resources management, transport, air quality and health, agriculture and food security, risk management, urbanization and security. In order to enhance economic growth of the country, Ethiopian government has encouraged the use of EO satellite for different applications and public policy needs. In response, Ethiopian Space Science and Technology Institute (ESSTI) initiated an iterative dialog with policy makers, scientific communities, government and non-government industrial partners in order to support feasibility and demonstration studies as well as improve data accessibility, tools and expertise. To access real and near real time accurate regional information, Ethiopia launched its first Earth Observing satellite on the 20th of December 2019 in collaboration with the government of China. Ethiopian Remote Sensing Satellite (ETRSS-1) carries one earth observing multispectral camera to collect images at a Ground Sampling Distance (GSD) of 13.75-m over land, water and biosphere within four days. Currently, all the instruments are operating in good performance and we made standard calibration and corrections for images captured by ETRSS-1 for use of intended purpose. This indicates that it can serve as a supplementary and alternative data source for operational and research activities. Key words: ETRSS-1, Earth Observation, Remote Sensing, Sun-Synchronous and Multispectral Camera

Aerospace Technology and it’s Impacts on Socio-economics and Geo-politics-Abera Shiferaw

Department of Aerospace Engineering, Sejong University 209, Neungdong-Ro, Gwangjin-Gu, Seoul, 05006, Korea
Aerospace, as a discipline, comprises aeronautics and astronautics that deal with the study of aircrafts and spacecrafts, respectively. This review depicts the retrospective and prospective of aerospace technology and it’s impacts on socio-economics and geo-politics of nations. Referring to it’s retrospective, aerospace evolves overtime through unpredictable challenges and opportuni- ties and brought forth factors influential in socio-economic growth, national pride, and environmental disruption. As the need to own this technology is soaring in every corner of the world, it is essential to predict the plausible influences that this technology may induce. Therefore, based on the past records and current observations, this review, also, foretells the future of aerospace technology and it’s consequences. Keywords: Aeronautics, Astronautics, Socio-economics, Geo-politics References
  1. [1]  John Shaw. The Influence of Space Power upon History (1944 – 1998). https://www.airuniversity.af.edu/Portals/10/ASPJ/journals /Chronicles/shaw.pdf
  2. [2]  Steven J. Dick. The Social Impact of Space Flight, December, 2008. http://www.spaceref.com/news/viewsr.html?pid=30009.
  3. [3]  Isidoro Martinz. Aerospace Engineering and the Environment. http://webserver.dmt.upm.es/ isidoro/Env/Aerospace
  4. [4]  Martin Rees. The Future of Space Exploration and Technology. http://www.academiadelasciencias.va/content/accademia/en/publications /acta/acta24/rees.html

The properties of inside-out assembly galaxies at z<0.1 Dejene Zewdie-Diego Portales University

In this work, we went a step further in studying the properties of inside-out assembly galaxies, with the main aim to understand better their properties and contribute to a better understanding of galaxy growth and morphological transformation. We report an analysis of 48127 galaxies from the SDSS DR8 survey at z<0.1, using both photometric and spectroscopic data. Taking into account the results of Peréz et al. (2013), obtained using the CALIFA data, we selected those galaxies that have stellar mass in the range 10.73 – 11.03 solar masses being suggested to be good candidates of galaxies with the highest relative assembly rate. We studied the distributions of selected sources in terms of their stellar mass, star formation rate (SFR), specific SFR, their position on SFR – stellar mass, and color-stellar mass diagram; we classified all galaxies into star-forming, composites, and active galactic nuclei (AGN); and studied morphology using two different classification catalogs. We analyzed the location of all selected galaxies in relation to the main-sequence of star formation and on the color-stellar mass diagram. We found that inside-out assembly galaxies have different spectroscopic properties, most of them being either AGN or composite.-Dejene Zewdie is a PhD student at Diego Portales University, Santiago, Chile
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