The HI Distribution Observed toward a Halo Region of the Milky Way

We use observations of the neutral atomic hydrogen (HI) 21-cm emission line to study the spatial distribution of the HI gas in a 80$\degree\times~$90$\degree$ region of the Galaxy halo. The HI column densities in the range of \mbox{3--11$\times$10$^{20}$ cm$^{-2}$} have been estimated for some of the studied regions. In our map---obtained with a spectral sensitivity of $\sim$2 K---we do not detect any HI 21-cm emission line {above 2$\sigma$} at Galactic latitudes higher than $\sim${46}$\degree$. {This report summarizes our contribution presented at the conference on the origin and evolution of barionic Galaxy halos}

Upper Limits to Magnetic Fields in the Outskirts of Galaxies

Based on CO(2-1) public data, we study the monoxide oxygen gas excitation conditions and the magnetic field strength of four spiral galaxies. For the galaxy outskirts, we found kinetic temperatures in the range of $\lesssim$35--38 K, CO column densities $\lesssim 10^{15}$--$10^{16}$ cm$^{-2}$, and H$_2$ masses $\lesssim 4\times 10^6$--$6\times10^8$ M$_\odot$. An H$_2$ density $\lesssim 10^3$ cm$^{-3}$ is suitable to explain the 2$\sigma$ upper limits of the CO(2-1) line intensity. We constrain the magnetic field strength for our sample of spiral galaxies and their outskirts by using their masses and H$_2$ densities to evaluate a simplified magneto-hydrodynamic equation. Our estimations provide values for the magnetic field strength on the order of $\lesssim$6--31 {\upmuG}

Circular geodesics stability in a static black hole in new massive gravity

We study the existence and stability of circular geodesics in a family of asymptotically AdS static black holes in New Massive Gravity theory. We show that the mathematical sign of the hair parameter determines the existence of such geodesics. For a positive hair parameter, the stability regions follow the usual pattern, with the innermost geodesic being null, unstable, and separated from the horizon, followed by a region of unstable timelike geodesics and then a region of stable timelike geodesics, which extends in the asymptotic region.Fil: Aceña, Andrés Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; ArgentinaFil: López, Ericson. Escuela Politécnica Nacional; EcuadorFil: Aldás, Franklin. Escuela Politécnica Nacional; Ecuado

Clash of Titans: The Impact of Cluster Mergers in the Galaxy Cluster Red Sequence

Merging of galaxy clusters are some of the most energetic events in the Universe, and they provide a unique environment to study galaxy evolution. We use a sample of 84 merging and relaxed SPT galaxy clusters candidates, observed with the Dark Energy Camera in the $0.11<z<0.88$ redshift range, to build colour-magnitude diagrams to characterize the impact of cluster mergers on the galaxy population. We divided the sample between relaxed and disturbed, and in two redshifts bin at $z = 0.55$. When comparing the high-z to low-z clusters we find the high-z sample is richer in blue galaxies, independently of the cluster dynamical state. In the high-z bin we find that disturbed clusters exhibit a larger scatter in the Red Sequence, with wider distribution and an excess of bluer galaxies compared to relaxed clusters, while in the low-z bin we find a complete agreement between the relaxed and disturbed clusters. Our results support the scenario in which massive cluster halos at $z<0.55$ galaxies are quenched as satellites of another structure, i.e. outside the cluster, while at $z \geq 0.55$ the quenching is dominated by in-situ processes.Comment: 9 pages, 5 figures, paper accepted in MNRA

Prototype System for Control the ScorBot ER-4U Robotic Arm Using Free Tools

The acquisition of controllers offered by manufacturers represents a high cost for the user and presents limitations for development. Therefore, in this work we propose the development of an electronic controller for the ScorBot ER_4U robotic arm operation. The programs are elaborated in C language, in the ESP-IDF development environment, which allows the manipulation and control of the arm. The development of this research directly benefits the research field. In this way, an open license software is delivered for the modification of codes and circuits that support the evolution of robotics knowledge. The tests carried out validate this proposal, both in operation and in the response times obtained

NRI - Non-Resident Indian or Not-Really Indian? : the image of Indian emigrants in India

Szkic traktuje o stosunku Indusów do indyjskiej diaspory, czyli tzw. NRIs - Non-Resident Indians. Emigranci bywają przedstawiani w różnym świetle: niektórzy podkreślają ich wkład gospodarczy w rozwój Indii czy promowanie pozytywnego wizerunku kraju za granicą, inni zarzucają im zdradę oraz odejście od rodzimej kultury. Z tym aspektem związana jest także idea powrotu członków diaspory - "synów marnotrawnych" - do Matki-Indii. Analizując zarówno działalność rządu, jak i żywą dyskusję toczącą się na łamach czasopism czy w Internecie, nie sposób zaprzeczyć, iż temat ten nieustannie wzbudza wiele kontrowersji i stanowi poważne zagadnienie zarówno dla emigrantów, jak i samych Indii XXI wieku

Monitoring System for Plants Based on a Smart Plant Pot

The occupations of the modern world neglect important things like the environment and sustainable development. This work develops a monitoring system for plants, based on a smart plant pot that can be supervised and configured through a mobile application. The electronic design consists of the use of two sensors that constantly send the temperature and humidity of the plant to the mobile application. In addition, a submersible pump provides water to the interior of the plant pot to monitor the condition of the plant. The optimal temperature and humidity settings will depend on the type of plant; these options can be configured remotely. Alerts are sent in the form of notifications or appear on the display of the plant pot when a different status than recommended is detected. Information is reflected locally on the plant pot display as facial expressions. The local operating code is designed so that the facial expression displayed on the screen changes automatically based on the conditions presented on the plant pot. As a result, adequate communication was obtained between the mobile application and all the devices installed in the smart plant pot. Finally, an acceptance test is applied that qualifies this proposal as suitable for domestic use