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Displaying 39 contributions out of 39
Uno de los principales problemas de la astrofísica (y de toda la física en general) es la llamada materia oscura, un tipo de materia que se sabe que está ahí debido a sus efectos gravitacionales pero que no emite ninguna radiación electromagnética contrariamente a la materia bariónica. A pesar de constituir aproximadamente el 27$\%$ de la composición del universo, ha sido imposible obtene ... More
Presented by Mr. Alvaro PRATTS on 25 Nov 2020 at 11:50
In the past, due to the technological limitations of direct and indirect cosmic ray detectors, the observations made on the energy interval from 10 TeV to 1 PeV of the all-particle cosmic-ray energy spectrum have poor statistics and are dominated by large systematics errors. Nowadays, a new generation of instruments have taken the mission of studying this energy region, among them, the High Altitu ... More
Presented by Mr. Jorge Antonio MORALES SOTO on 25 Nov 2020 at 11:30
En el área experimental de física de altas energías, se sabe sobre la importancia de un buen sistema y algoritmo de selección de datos, si ahora queremos aplicar técnicas de Deep Learning para analizar datos, es importante realizar una buena selección de datos de entrada, en este trabajo se habla sobre la importancia de realizar un correcto preprocesamiento de los datos a estudiar y utiliza ... More
Presented by Mr. Irving GABRIEL OCAMPO
Se da un recuento histórico de los eventos que iniciaron y motivaron el estudio de las astropartículas así como la evolución de los detectores desarrollados para este fin. Se analiza el tipo de partículas que nos interesa medir y se exponen las características cualitativas y cuantitativas que un detector gaseoso debe cumplir. Posteriormente se muestra la invención de los detectores del tipo ... More
Presented by Mr. Miguel Raúl ORDÓÑEZ FERNÁNDEZ on 23 Nov 2020 at 12:10
The detection of high-energy astrophysical neutrinos and ultra-high-energy cosmic rays (UHECRs) provides a new way to explore the sources of cosmic rays. One of the highest energy neutrino events detected by IceCube, tagged as IC35, is close to the UHECRs anisotropy region detected by Pierre Auger Observatory. Recently, Pierre Auger collaboration showed that nearby starburst galaxies (SBGs) could ... More
Presented by Mr. Edilberto AGUILAR-RUIZ on 26 Nov 2020 at 13:10
The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory at TeV energies. It will consist of more than one hundred telescopes shared between its two sites (CTA North, located in La Palma, Spain; and CTA South, in the Atacama Desert, Chile), allowing to obtain observational data with unprecedented spatial and energy resolution. Because of its high sensitivity, large field o ... More
Presented by Sergio HERNANDEZ CADENA on 25 Nov 2020 at 13:40
Se describe los diferentes modelos de interacción hadrónica que existen en la actualidad, y que son usados en el estudio de las cascadas atmosféricas extendidas (EAS) producidas producidas por rayos cósmicos. Se muestran de manera explícita las diferencias y similitudes entre algunos modelos (QGJET II-04, SIBYLL, EPOS-LHC y VENUS) a través simulaciones de chubascos atmosféricos producidos ... More
Presented by Victor Manuel LOPEZ LUNA
Se presenta un estudio basado en el catálogo de fuentes de rayos gamma que emiten radiación con energías superiores a 56 TeV y 100 TeV, con datos del observatorio de gran altura de Cherenkov en agua (HAWC, por sus siglas en inglés). Este experimento tiene un amplio campo de visión y una excelente sensibilidad a fuentes extendidas; características cruciales para detectar fuentes que son capac ... More
Presented by Ms. Indira Angie GARCÍA TÉLLEZ on 23 Nov 2020 at 14:00
Los Chubascos Atmosféricos Extensos (CAE) son producto de los rayos cósmicos primarios (RCP) que se producen al chocar con los núcleos atmosféricos. Los CAE alcanzan diferentes profundidades en la atmósfera dependiendo de la energía, inclinación y tipo de partícula del RCP. En este trabajo presentamos las características de los CAE generados con Corsika a diferentes alturas que pueden ayu ... More
Presented by Ms. María José RODRÍGUEZ SÁNCHEZ
Se presentan resultados preliminares del uso de técnicas computacionales de Deep Learning (aprendizaje profundo) para la reconstrucción de la profundidad atmosférica del máximo desarrollo de cascadas de partículas $X_{max}.\ La \ X_{max}$ es una observable física sensible a la composición del rayo cósmico primario (rc que generó la cascada de partículas). Con el fin de aprovechar las t ... More
Presented by Fernando MENDEZ ALONSO
Se presentarán los resultados de la propuesta de actualización del detector ACORDE del Experimento ALICE del LHC, utilizada en el periodo 2009-2015. Con esta propuesta se busca obtener un incremento de la estadística de muones atmosféricos y con esto mejorar la eficiencia y aceptancia, obtenidas con la geometría anterior.
Presented by Pedro Alfonso VALENCIA ESQUIPULA on 23 Nov 2020 at 11:00
Con base en las perturbaciones más significativas del clima espacial entre diciembre de 2015 y junio de 2020, se analizaron las variaciones de la componente secundaria de los rayos cósmicos detectados por el Observatorio de Rayos Cósmicos en Sierra Negra, compuesto por el Telescopio de Neutrones Solares (TNS) y el Telescopio Centellador de Rayos Cósmicos (SciCRT); ambos se encuentran instalado ... More
Presented by Mr. Sebastian PEREA on 26 Nov 2020 at 12:40
La astronomía multimensajera ha sido fundamental para poder develar el origen de los neutrinos de altas energías detectados por el observatorio IceCube, así como los mecanismos físicos que los producen. Fuentes galácticas conocidas como PeVatrones son candidatos a producir neutrinos de altas energías. El mecanismo de producción es vía procesos hadronicos vía protón-protón, los cuales pr ... More
Presented by Mr. Antonio GALVÁN on 26 Nov 2020 at 11:00
Los rayos cósmicos son partículas interestelares de alta energía (de hasta ~ $10^{20}$ eV) que viajan a velocidades cercanas a la de la luz. Los rayos cósmicos al interaccionar con la atmosfera terrestre provocan una lluvia de partículas que pueden ser registradas en detectores Cherenkov de agua (WCD). Las señales registradas de estos eventos son extremadamente rápidas $~10^-9$s, por lo que ... More
Presented by Victor ACAMETITLA on 23 Nov 2020 at 11:50
The development of detection techniques in high-energy astrophysics is advancing rapidly, but each observational methodology has inherent advantages and disadvantages. For this reason, the idea of establishing a hybrid system opens the doors to more precise and complete detection techniques. By combining observations made with a pair of compact IACTs called HAWC’s Eye in combination with the det ... More
Presented by Mr. José Erandi SERNA FRANCO on 23 Nov 2020 at 12:30
Los TeV Halos son una clase nueva de fuente de rayos gamma caracterizados por una zona de emisión extendida la cual se forma por la dispersión de partículas muy energéticas que escapan de una Pulsar Wind Nebulae (PWN) e interactúan con el campo de radiación interestelar. Esta clase de fuente fue propuesta a partir de las observaciones del pulsar de Geminga, categorizado como región extendid ... More
Presented by Ms. Maria Fernanda CARREON GONZALEZ
Multi-Messenger Astronomy with Cosmic Rays.
Presented by Dr. Lukas NELLEN on 24 Nov 2020 at 11:50
Since neutrinos can escape from dense regions without being deflected, they are promising candidates to study the unexplored physics at the sources that produce them. In particular, current detectors can reconstruct, among other things, trajectory, energy, and flavor compositions of incident neutrinos, which are essential for this purpose. We centralize our study in those produced by thermal proc ... More
Presented by Mr. Gibran MORALES on 25 Nov 2020 at 14:00
Las radio galaxias son un tipo de núcleos activos de galaxias (AGN) que albergan un agujero negro muy masivo del orden de 10^9 masas solares y tienen su jet relativista desalineado al eje de visión del observador. Diversos observatorios como HESS, VERITAS han reportado detecciones en el rango de TeV, la cual abre una nueva ventana de estudio para verificar la robustez de los modelos de AGN y de ... More
Presented by Dr. Tomás CAPISTRÁN ROJAS on 24 Nov 2020 at 11:00
on 26 Nov 2020 at 12:10
The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for studying gamma rays and, with unique capabilities, it will be able to address important open questions in astrophysics, cosmology and fundamental physics. In this talk, I will focus on the Lorentz Invariance Violation (LIV) signal's sensitivity limits obtained through a dedicated study of CTA simulated observat ... More
Presented by Dr. Humberto MARTÍNEZ-HUERTA on 24 Nov 2020 at 14:00
Pulsars are powerful accelerators known to emit gamma rays in the GeV energy range. And while no pulsed TeV emission appears to be produced in the magnetosphere, there is increasing evidence that pulsars power extended gamma-ray emission producing TeV haloes. We'll review pulsar processes leading from particle acceleration in the magnosphere to wind nebulae and TeV haloes.
Presented by Dr. Alberto CARRAMINANA on 23 Nov 2020 at 13:40
Type: plenary
The High Altitude Water Cherenkov (HAWC) Gamma-ray Observatory in the high mountains of Mexico is giving us a new view of the TeV sky. Unlike Imaging Atmospheric Cherenkov Telescopes (IACTs), HAWC operates 24hrs/day with over a 95% on-time and observes the entire overhead sky (~8sr over the course of the day). This talk will present an overview of recent HAWC results showing our updated sky catalo ... More
Presented by Prof. Jordan GOODMAN on 25 Nov 2020 at 10:00
Type: plenary
The High Altitude Water Cherenkov (HAWC) Gamma-ray Observatory in the high mountains of Mexico is giving us a new view of the TeV sky. Unlike Imaging Atmospheric Cherenkov Telescopes (IACTs), HAWC operates 24hrs/day with over a 95% on-time and observes the entire overhead sky (~8sr over the course of the day). This talk will present an overview of recent HAWC results showing our updated sky catalo ... More
Los destellos de rayos gamma (GRBs) se encuentran entre las fuentes más luminosas del universo, la naturaleza de su emisión a energías de TeV es uno de los temas abiertos más importantes relacionados con el estudio de estos eventos. Debido a su gran campo de visión y ciclo de trabajo, HAWC es un observatorio ideal para estudiar fenómenos transitorios de emisión en rayos gamma en el régimen ... More
Presented by Mr. Yunior Frainen PÉREZ ARAUJO on 26 Nov 2020 at 11:50
MATHUSLA (MAssive Timing Hodoscope for Ultra-Stable neutral pArticles), es un nuevo detector que se propone construir en el LHC para estudiar partículas neutras de larga vida. El estudio de dichas partículas podría ayudar a resolver varios de los problemas abiertos de la física de partículas elementales. El diseño actual consta de un volumen de $\sim 2\times10^5$ m$^3$, dos capas de centella ... More
Presented by Dr. Oscar MORALES OLIVARES on 23 Nov 2020 at 11:30
**Simulación del transporte de neutrones solares a lo largo de la atmósfera terrestre** _¹Fernando Monterde Andrade, ²Luis Xavier González Méndez._ _¹Posgrado en Ciencias de la Tierra, Instituto de Geofísica (I-GEOF), Universidad Nacional Autónoma de México (UNAM)._ _²Laboratorio Nacional de Clima Espacial (LANCE), Servicio de Clima Espacial México (SciESMEX)._ En ... More
Presented by Mr. Fernando MONTERDE ANDRADE
We have found an interesting event registered by the solar neutron telescopes installed at high mountains in Bolivia (5250m asl) and Mexico (4600m asl). The event was observed in November 7th of 2004 in association with a large solar flare X2.0. Some features in our registers and in two satellites (GOES11 and SOHO) reveal the presence of electrons and protons as possible products of neutron deca ... More
Presented by Dr. Jose F. VALDES-GALICIA on 25 Nov 2020 at 11:00
Type: plenary
*What are the mysterious sources of the most energetic particles ever observed? What are the sources of energetic cosmic neutrinos? How do particles interact at extreme energies?* Building on the progress achieved by the ground-based Auger Observatory in studying cosmic particles that reach 100 EeV, an international collaboration is working on space and sub-orbital missions to answer these ... More
Presented by Prof. Angela V. OLINTO on 23 Nov 2020 at 10:00
KASCADE-Grande was a cosmic rays experiment that was located at the Karlsruhe Institute of technology (110 m a.s.l., 49°N, 8°E), In this work, we present densities of muons and electrons in extended air showers (EAS) initiated by cosmic rays using the experimental data, the energy range of the primaries is between 10 PeV and 1 EeV. Expectations of Monte Carlo showers simulatations with iron and ... More
Presented by David RIVERA-RANGEL on 26 Nov 2020 at 11:30
Multi-messenger astrophysics is a growing field of research, based on the wealth of information about charged and neutral particles (gamma rays and neutrinos) which is coming from the main experiments in the field, and on the exciting detection of gravitational waves from cosmic mergers. The Pierre Auger Observatory has collected data for more than 15 years, accumulating the world’s largest expo ... More
Presented by Dr. Antonella CASTELLINA on 26 Nov 2020 at 10:00
HAWC is an extensive air shower observatory dedicated to studying TeV astrophysical gamma rays and cosmic rays. The instrument is located at 4100 m a.s.l. at the Sierra Negra Volcano in Puebla, Mexico and consists of 300 water Cherenkov detectors (7.3 m diameter x 4.5 m deep) closely packed in an area of $22 000 \, m^2$. The design of the detector and its high altitude allow detailed measurements ... More
Presented by Dr. Juan Carlos ARTEAGA VELAZQUEZ on 24 Nov 2020 at 11:30
The existence of cosmic rays with energies near 50 Joules per nucleus challenges our understanding of astrophysical particle acceleration. The extremely low flux of these particles presents experimental challenges that are just as difficult. I will describe the Telescope Array experiment, located in the deserts of Utah, with emphasis on the detection techniques ( utilizing both atmospheric air flu ... More
Presented by Prof. Pierre SOKOLSKY on 24 Nov 2020 at 10:00
Presented by Dr. Luis VILLASENOR on 23 Nov 2020 at 09:55
During this workshop we will discuss some introductory machine learning concepts. Among other topics, we will talk about supervised learning, unsupervised learning and reinforcement learning. Next we will explain in detail some examples that can be applied to research in high energy physics and cosmic rays. Finally we will give an example to show how to combine software and hardware through the ... More
Presented by Dr. Jesus MARTINEZ on 23 Nov 2020 at 13:00
During this workshop we will discuss some introductory machine learning concepts. Among other topics, we will talk about supervised learning, unsupervised learning and reinforcement learning. Next we will explain in detail some examples that can be applied to research in high energy physics and cosmic rays. Finally we will give an example to show how to combine software and hardware through the us ... More
Presented by Dr. Jesus MARTINEZ on 24 Nov 2020 at 13:00
We review the basic concepts of parallel computing with examples from high energy physics and cosmic rays. We describe in detail the use of the message passing interface (MPI) to perform high performance computing (HPC) on clusters of central processing units (CPUs). We also describe the use of the compute unified device architecture (CUDA) to perform HPC on graphics processing units (GPUs). Durin ... More
Presented by Dr. Luis VILLASEÑOR on 25 Nov 2020 at 13:20
We review the basic concepts of parallel computing with examples from high energy physics and cosmic rays. We describe in detail the use of the message passing interface (MPI) to perform high performance computing (HPC) on clusters of central processing units (CPUs). We also describe the use of the compute unified device architecture (CUDA) to perform HPC on graphics processing units (GPUs). Durin ... More
Presented by Dr. Luis VILLASENOR on 26 Nov 2020 at 14:00
Gammapy is an open-source python package for the study of gamma-ray astronomy, based on NumPy and Astropy (https://gammapy.org). Gammapy is an excellent and intuitive tool for analyzing data from existing gamma-ray telescopes and performing various gamma-ray simulations. Experiments like H.E.S.S. uses Gammapy for data analysis and is also a science tool prototype for next-generation gamma-ray expe ... More
Presented by Dr. Humberto MARTÍNEZ-HUERTA on 26 Nov 2020 at 13:30