277 research outputs found

    Observational tests of fundamental physics from gravitational wave detections

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    With the detection of the signal GW150914 from the collision of two black holes in 2015, observational gravitational wave physics has begun. Many more signals have since been recorded, and new detections are now becoming routine. These observations offer a new window to probe fundamental physics in thus far inaccessible regimes of strong gravity, such as in the regions near black hole horizons. The work presented here pursues this through two approaches, studying predicted signals of either black holes of general relativity, or of proposed alternative objects without horizons. A binary black hole collision creates a single perturbed black hole, which settles to its final state through the ringdown gravitational wave emission. The ringdown consists of a spectrum of modes, which the no-hair theorem in General Relativity predicts to be determined entirely by the black hole mass and angular momentum. Measurement of multiple modes allows to test this prediction but is challenging due to the weak and short-lived nature of the ringdown signal. Two studies are presented on the feasibility of such tests using current and near-future de- tector sensitivities. Large populations of simulated ringdown signals are constructed based on observational models of the binary black hole population. Bayesian parameter estimation techniques are applied to these signals to place bounds on deviations from the no-hair prediction. Detections leading to stringent bounds are unlikely to occur for current instruments but can be found during a few years of operation at their planned future sensitivities. The prospects improve when extending the analysis to combine data from multiple detections into a single bound on deviations. At the sensitivity planned for the next observation run of current instruments, the detections from one year of data can be combined into stringent bounds. Solutions are provided to limitations uncovered for this type of study. In a further study, strong evidence is found for the presence of a subdominant mode in the data of the event GW190521. A new method is employed to allow the analysis of only the ringdown part of the signal, without contamination from outside the analysis window and preventing windowing artefacts and signal loss. Tests of the no-hair theorem are performed, yielding unexpectedly tight constraints on deviations. Two phenomenologically distinct signals from horizonless compact objects are studied, both following after the primary signal which is otherwise unchanged compared to that of a black hole binary. One takes the form of repeated pulses after the ringdown, called gravitational wave echoes, while the other consists of a very long-lived damped sinusoid with a small amplitude. Using a simplified waveform model for echoes, evidence for such signals in the data of several detections is evaluated. Previous results from the first search for these are replicated, and the methods tested thoroughly. Through improved estimation methods, low statistical significance is established for these results, yet the presence of such signals cannot be ruled out by the analysis. An independent Bayesian analysis is performed for the same waveform model, with results for each event either preferring the absence of echoes in the data or being consistent with it. Bounds on the echo amplitudes ruled out by the data are produced. The long-lived mode signal for a broad class of horizonless objects is considered in a Bayesian analysis. Methods are developed to accommodate the long duration of the signal, and their performance is tested with simulated signals and off-source data. They are then applied to the data of the event GW150914, yielding stringent bounds on the deviations from the Kerr geometry exhibited by such objects.Mit der Detektion des Signals GW150914 von der Kollision zweier schwarzer Löcher im Jahr 2015 begann die beobachtungsbasierte Gravitationswellenphysik. Viele weitere Signale wurden seither aufgezeichnet und neue Detektionen werden zur Routine. Diese Beobachtungen eröffnen einen neuen Weg, fundamentale Physik im bisher unzugänglichen Regime starker Gravitation zu untersuchen, zum Beispiel in der Umgebung der Horizonte schwarzer Löcher. Die hier präsentierten Studien verfolgen dies durch zwei Ansätze, indem sie entweder die vorhergesagten Signale schwarzer Löcher in der Allgemeinen Relativitätstheorie oder vorgeschlagener alternativer Objekte ohne Horizonte untersuchen. Die Kollision zweier schwarzer Löcher erzeugt ein einzelnes gestörtes schwarzes Loch, welches durch Emission der Abkling-Gravitationswellen schließlich in einen ungestörten Zustand übergeht. Die Abkling-Strahlung besteht aus einem Spektrum von Moden, welche dem Keine- Haare-Theorem der Allgemeinen Relativitätstheorie nach gänzlich durch Masse und Drehimpuls des schwarzen Loches bestimmt werden. Die Messung mehrerer Moden ermöglicht die Prüfung dieser Vorhersage, ist jedoch wegen des schwachen und kurzlebigen Abklingsignals schwierig. Zwei Studien zur Durchführbarkeit solcher Tests mithilfe aktuell und in naher Zukunft verfügbarer Detektor-Empfindlichkeiten werden dargelegt. Große Populationen simulierter Abklingsignale werden konstruiert, basierend auf beobachtungsgestützten Modellen der Population von Binärsystemen schwarzer Löcher. Bayessche Parameterabschätzung wird auf diese Signale angewendet, um Abweichungen von der Keine-Haare-Vorhersage zu beschränken. Detektionen, die zu strikter Begrenzung führen, sind mit aktuellen Instrumenten unwahrscheinlich, können aber innerhalb weniger Jahre des Betriebs mit ihren geplanten zukünftigen Empfindlichkeiten erreicht werden. Diese Aussichten verbessern sich, wenn Daten mehrerer Detektionen in der Begrenzung kombiniert werden. Mit der geplanten Empfindlichkeit aktueller Instrumente im nächsten Beobachtungslauf können die in einem Jahr gesammelten Daten zu strikten Begrenzungen kombiniert werden. Lösungen für die entdeckten Limitationen dieser Art Analyse werden vorgestellt. In einer weiteren Studie wird starke Evidenz für die Existenz einer subdominanten Mode in den Daten des Signals GW190521 gefunden. Eine neue Methode wird eingesetzt, welche die Analyse des Abkling-Signals ermöglicht, ohne Kontamination von außerhalb des Analyse- Fensters, Artefakte oder Signalverlust zu verursachen. Tests des Keine-Haare-Theorems werden durchgeführt und liefern unerwartet strikte Beschränkungen für Abweichungen. Zwei phänomenologisch verschiedene Signale horizontfreier kompakter Objekte werden untersucht. Beide folgen dem Primärsignal, das ansonsten gegenüber dem schwarzer Löcher un- verändert ist. Eines besteht aus wiederholten Pulsen, als Gravitationswellen-Echos bezeichnet, während das zweite die Form einer langlebigen, gedämpften Sinuswelle geringer Amplitude hat. Anhand eines vereinfachten Modells der Echo-Wellenform wird die Evidenz solcher Signale in den Daten mehrerer Detektionen bewertet. Frühere Ergebnisse der ersten Suche nach Echos werden repliziert und die Methoden ausführlich geprüft. Durch verbesserte Abschätzungsmethoden wird eine geringe statistische Signifikanz der Ergebnisse etabliert, allerdings kann die Anwesenheit solcher Signale nicht durch diese Untersuchung ausgeschlossen werden. Eine unabhängige Bayessche Analyse wird mit derselben Wellenform durchgeführt, wobei die Ergebnisse die Abwesenheit des Signals bevorzugen oder mit Rauschen vereinbar sind. Grenzen für die von den Daten ausgeschlossenen Amplituden der Echos werden gefunden. Das Signal einer langlebigen Mode von einer großen Klasse horizontfreier Objekte wird in einer Bayesschen Analyse betrachtet. Methoden werden entwickelt, um die lange Dauer des Signals handhaben zu können, und ihre Leistungsfähigkeit wird an simulierten Signalen und signalfreien Daten getestet. Auf die Daten des Signals GW150914 angewendet, liefern sie strikte Beschränkungen für die Abweichungen solcher Objekte von der Kerr-Geometrie

    The Fifteenth Marcel Grossmann Meeting

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    The three volumes of the proceedings of MG15 give a broad view of all aspects of gravitational physics and astrophysics, from mathematical issues to recent observations and experiments. The scientific program of the meeting included 40 morning plenary talks over 6 days, 5 evening popular talks and nearly 100 parallel sessions on 71 topics spread over 4 afternoons. These proceedings are a representative sample of the very many oral and poster presentations made at the meeting.Part A contains plenary and review articles and the contributions from some parallel sessions, while Parts B and C consist of those from the remaining parallel sessions. The contents range from the mathematical foundations of classical and quantum gravitational theories including recent developments in string theory, to precision tests of general relativity including progress towards the detection of gravitational waves, and from supernova cosmology to relativistic astrophysics, including topics such as gamma ray bursts, black hole physics both in our galaxy and in active galactic nuclei in other galaxies, and neutron star, pulsar and white dwarf astrophysics. Parallel sessions touch on dark matter, neutrinos, X-ray sources, astrophysical black holes, neutron stars, white dwarfs, binary systems, radiative transfer, accretion disks, quasars, gamma ray bursts, supernovas, alternative gravitational theories, perturbations of collapsed objects, analog models, black hole thermodynamics, numerical relativity, gravitational lensing, large scale structure, observational cosmology, early universe models and cosmic microwave background anisotropies, inhomogeneous cosmology, inflation, global structure, singularities, chaos, Einstein-Maxwell systems, wormholes, exact solutions of Einstein's equations, gravitational waves, gravitational wave detectors and data analysis, precision gravitational measurements, quantum gravity and loop quantum gravity, quantum cosmology, strings and branes, self-gravitating systems, gamma ray astronomy, cosmic rays and the history of general relativity

    ATHENA Research Book, Volume 2

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    ATHENA European University is an association of nine higher education institutions with the mission of promoting excellence in research and innovation by enabling international cooperation. The acronym ATHENA stands for Association of Advanced Technologies in Higher Education. Partner institutions are from France, Germany, Greece, Italy, Lithuania, Portugal and Slovenia: University of Orléans, University of Siegen, Hellenic Mediterranean University, Niccolò Cusano University, Vilnius Gediminas Technical University, Polytechnic Institute of Porto and University of Maribor. In 2022, two institutions joined the alliance: the Maria Curie-Skłodowska University from Poland and the University of Vigo from Spain. Also in 2022, an institution from Austria joined the alliance as an associate member: Carinthia University of Applied Sciences. This research book presents a selection of the research activities of ATHENA University's partners. It contains an overview of the research activities of individual members, a selection of the most important bibliographic works of members, peer-reviewed student theses, a descriptive list of ATHENA lectures and reports from individual working sections of the ATHENA project. The ATHENA Research Book provides a platform that encourages collaborative and interdisciplinary research projects by advanced and early career researchers

    Academic integrity : a call to research and action

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    Originally published in French:L'urgence de l'intégrité académique, Éditions EMS, Management & société, Caen, 2021 (ISBN 978-2-37687-472-0).The urgency of doing complements the urgency of knowing. Urgency here is not the inconsequential injunction of irrational immediacy. It arises in various contexts for good reasons, when there is a threat to the human existence and harms to others. Today, our knowledge based civilization is at risk both by new production models of knowledge and by the shamelessness of knowledge delinquents, exposing the greatest number to important risks. Swiftly, the editors respond to the diagnostic by setting up a reference tool for academic integrity. Across multiple dialogues between the twenty-five chapters and five major themes, the ethical response shapes pragmatic horizons for action, on a range of disciplinary competencies: from science to international diplomacy. An interdisciplinary work indispensable for teachers, students and university researchers and administrators

    Review of X-ray pulsar spacecraft autonomous navigation

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    This article provides a review on X-ray pulsar-based navigation (XNAV). The review starts with the basic concept of XNAV, and briefly introduces the past, present and future projects concerning XNAV. This paper focuses on the advances of the key techniques supporting XNAV, including the navigation pulsar database, the X-ray detection system, and the pulse time of arrival estimation. Moreover, the methods to improve the estimation performance of XNAV are reviewed. Finally, some remarks on the future development of XNAV are provided.Comment: has been accepted by Chinese Journal of Aeronautic

    Visokoenergijsko gama-zračenje pulsara i maglica pulsarovog vjetra opažanih teleskopima MAGIC

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    A pulsar wind nebula (PWN) is a system with a central rotating object, a pulsar, which powers a surrounding nebula. This complex system is observed to emit radiation throughout the electromagnetic spectrum, from radio to gamma rays. In this thesis I explored the gamma-ray emission from pulsars, their respective nebulae and one PWN candidate at very high energies (VHE, E > 100 GeV) using the Major Atmospheric Gamma-ray Imaging Cherenkov (MAGIC) telescopes. At the beginning of this research, only one pulsar, the Crab pulsar, was known to emit at VHE, challenging the theoretical models. The observed electromagnetic radiation from the pulsar-nebula system implies the presence of a mechanism that accelerates charged particles to ultra-relativistic energies. However, this mechanism is poorly understood, thus VHE pulsar observations are relevant not only as information for emission modelling but also as a contribution for better characterization of fundamental properties of these complex astrophysical systems. The MAGIC telescopes, with its novel trigger especially developed for pulsar obser- vation, is the most suitable instrument to search for new VHE pulsars. In this thesis, I present the observations and analysis of two galactic sources: Crab (PSR J0534+2200) and Dragonfly (PSR J2021+3651) pulsars. For the well-known and previously detected Crab pulsar, the anal- ysis shows the expected results and is used as a performance check of the method. The same method is then used to search for VHE emission from the Dragonfly pulsar, proposed as a very likely VHE pulsar candidate due to its similar characteristics to the Crab pulsar. I found no significant pulsed emission from Dragonfly pulsar in low Eγ-range (50 GeV 200 GeV), only upper limits were derived. However, with the same set of data, the Dragonfly nebula surrounding the pulsar was detected. I also present the study of the unidentified TeV source, HESS J1858+020, that was put forward as a relic PWN candidate using the archival data collected from the MAGIC telescopes where this source was relatively far from the centre of the camera implying a decrease in detection sensitivity. Nevertheless, the source was detected, source extension estimated and the spectrum between 300 GeV and 10 TeV was constrained, but morphological or other details were not discerned. Neither the PWN scenario could be refuted nor confirmed. Overall, detailed studies of the VHE gamma-ray emission from pulsars and nebulae seem more challenging than expected, and longer observations are needed for pulsed detection or for morphological characterization of nebulae. The next-generation Cherenkov telescope array (CTA) with an order of magnitude better sensitivity and with 1 arcminute resolution, will certainly allow detailed morphological and spectral studies of this kind of source. Furthermore, I also studied a faint component of the Galactic diffuse synchrotron emission at low-radio frequencies by using multiple polarimetric observations with the LOw Frequency ARray (LOFAR). Before stacking them, these observations first needed to be corrected for the Faraday rotation in the Earth’s ionosphere, otherwise, the observed polarized emission may be either partially or in exceptional cases fully depolarized. I used the observed polarized diffuse synchrotron emission to characterize and additionally correct for the ionospheric Faraday rotation. After stacking twenty observations, the noise was reduced by ∼ √20, as expected. A higher signal-to-noise ratio achieved with this method enables a study of the faint component of the Galactic diffuse emission, which was not visible in a single reference observation. Moreover, the applied technique can also be used for studies of faint polarized sources, including pulsars.Glavna tema ovog rada je proučavanje visokoenergijskog gama-zračenja iz pulsara i maglica pulsarovog vjetra opažanih teleskopima MAGIC (engl. Major Atmospheric Gamma Imaging Cherenkov). Gama-astronomija proučava procese u svemiru koji se odvijaju u uvjetima ekstremno velikih energija i gustoća. Podrijetlo kozmičkog gama-zračenja vrlo visokih energija (100 GeV < E < 100 TeV) su netermički procesi koji nose informaciju o galaktičkim i izvangalaktičkim izvorima. Galaktički izvori su ostaci supernova (engl. supernova remnants), pulsari, maglice pulsarovog vjetra (engl. pulsar wind nebulae), dvojni gama-sustavi (engl. binary systems) te magnetari, dok su izvangalaktički izvori npr. aktivne galaktičke jezgre, provale gama-zračenja (engl. gamma ray burst, GRB) i tamna tvar - koja je potencijalno i galaktički izvor. U prošlom desetljeću, opažanjima opservatorija na energijama u području TeV (MAGIC, VERITAS, HESS, Milagro) otkriven je velik broj izvora u galaktičkoj ravnini, među kojima su maglice pulsarovog vjetra dominantna populacij

    Review of Particle Physics

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    The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on Machine Learning, and one on Spectroscopy of Light Meson Resonances. The Review is divided into two volumes. Volume 1 includes the Summary Tables and 97 review articles. Volume 2 consists of the Particle Listings and contains also 23 reviews that address specific aspects of the data presented in the Listings. The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print, as a web version optimized for use on phones, and as an Android app.United States Department of Energy (DOE) DE-AC02-05CH11231government of Japan (Ministry of Education, Culture, Sports, Science and Technology)Istituto Nazionale di Fisica Nucleare (INFN)Physical Society of Japan (JPS)European Laboratory for Particle Physics (CERN)United States Department of Energy (DOE

    Dark Matter Searches Towards the Sun with ANTARES and Positioning Studies for KM3NeT

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    [ES] Los neutrinos de alta energía son partículas esquivas: no tienen carga, tienen una sección transversal de interacción muy pequeña con la materia ordinaria y su masa es extremadamente pequeña. Los neutrinos son una sonda importante en el estudio del origen de los rayos cósmicos, y también, siguiendo algunos modelos de la física más allá del modelo Stardard, pueden producirse a partir de la propagación de partículas del modelo estándar producidas por la aniquilación de la materia oscura. En el último siglo, se han desarrollado muchos enfoques nuevos en la física de astropartículas, tratando de resolver los enigmas no resueltos del Universo, como el origen de los rayos cósmicos y la existencia de la materia oscura. Entre los diferentes experimentos destacan, sin duda, los telescopios de neutrinos. Los telescopios de neutrinos, consistentes en un gran volumen de un medio transparente monitorizado por sensores ópticos para detectar luz de Cherenkov, pueden detectar neutrinos de alta energía de fuentes galácticas o extragalácticas, y también pueden usarse para el estudio de las propiedades de los neutrinos. ANTARES y su sucesor KM3NeT son dos telescopios de neutrinos ubicados en el mar Mediterráneo. El telescopio ANTARES empezó a estar operativo en 2007 y ha tomado datos de forma casi continua hasta principios de 2022. KM3NeT, aprovechando la experiencia de ANTARES, pretende ser el telescopio de neutrinos más sensible de la próxima generación de detectores. Esta tesis presenta mis contribuciones en ambos detectores. En concreto, la parte técnica del trabajo se ha desarrollado en colaboración con KM3NeT. Está dedicado al estudio de los datos de los sensores de orientación instalados en los módulos de detección ópticos de KM3NeT: desde su calibración antes del despliegue en el mar hasta el análisis de sus datos in situ. Estos sensores permiten una monitorización de los movimientos de los elementos detectores en el mar. Por otro lado, en colaboración con ANTARES se ha desarrollado un análisis de física relacionado con la búsqueda de la aniquilación de la materia oscura en el Sol analizando trece años de datos. Se han obtenido nuevos límites superiores para los flujos de neutrinos y antineutrinos a partir de la aniquilación de materia oscura en el Sol, y a partir de estos, se han derivado límites superiores a la sección eficaz de dispersión de Materia Oscura - Nucleón. Estos resultados mejoran en un factor dos los resultados anteriores de ANTARES y son competitivos con respecto a otros experimentos.[CAT] Els neutrins d'alta energia són partícules esquives: no tenen càrrega, tenen una secció transversal d'interacció molt petita amb la matèria ordinària i la massa és extremadament petita. Els neutrins són una sonda important en l'estudi de l'origen dels raigs còsmics, i també, seguint alguns models de la física més enllà del Model Stardard, es poden produir a partir de la propagació de partícules del model estàndard produïdes per l'aniquilació de la matèria fosca. A l'últim segle, s'han desenvolupat molts enfocaments nous a la física d'astropartícules, tractant de resoldre els enigmes no resolts de l'Univers, com l'origen dels raigs còsmics i l'existència de la matèria fosca. Entre els diferents experiments destaquen, sens dubte, els telescopis de neutrins. Els telescopis de neutrins, consistents en un gran volum d'un medi transparent monitoritzat per sensors òptics per detectar llum de Cherenkov, poden detectar neutrins d'alta energia de fonts galàctiques o extragalàctiques, i també es poden utilitzar per a l'estudi de les propietats dels neutrins. ANTARES i el seu successor KM3NeT són dos telescopis de neutrins ubicats al mar Mediterrani. El telescopi ANTARES va començar a estar operatiu el 2007 i ha pres dades de forma gairebé contínua fins a principis del 2022. KM3NeT, aprofitant l'experiència d'ANTARES, pretén ser el telescopi de neutrins més sensible de la propera generació de detectors. Aquesta tesi presenta les meves contribucions a tots dos detectors. Concrètement, la part tècnica del treball s'ha desenvolupat en col·laboració amb KM3NeT. Està dedicat a l'estudi de les dades dels sensors d'orientació instal·lats als mòduls de detecció òptics de KM3NeT: des del calibratge abans del desplegament al mar fins a l'anàlisi de les seves dades in situ. Aquests sensors permeten una monitorització dels moviments dels elements detectors al mar. D'altra banda, en col·laboració amb ANTARES s'ha desenvolupat una anàlisi de física relacionada amb la recerca de l'aniquilació de la matèria fosca al Sol analitzant tretze anys de dades. S'han obtingut nous límits superiors per als fluxos de neutrins i antineutrins a partir de l'aniquilació de matèria fosca al Sol, i a partir d'aquests, s'han derivat límits superiors a la secció eficaç de dispersió de Materia Fosca - Nucleó. Aquests resultats milloren en un factor dos els resultats anteriors de ANTARES i són competitius respecte a altres experiments.[EN] High energy Neutrinos are elusive particles: they are chargeless, have a very small cross section with ordinary matter and their mass is extremely small. Neutrinos are an important probe in the study of the origin of cosmic rays but also, following some models of physics Beyond the Standard Model, they can be produced from the decay of Standard Model particles produced by dark matter annihilation. In the last century, many new approaches have been developed in astroparticle physics, trying to solve the unsolved puzzles of the Universe such as the origin of Cosmic Rays and the existence of Dark Matter. Among the many experiments, neutrino telescopes certainly stand out. Neutrinos telescopes, made of large volume of a transparent medium observed by optical sensors, can detect high energy neutrinos from galactic or extra-galactic sources, and they can also be used for the study of neutrino properties. ANTARES and its successor KM3NeT are two neutrino telescopes located in the Mediterranean sea. ANTARES operations started in 2007 and it has taken data almost continuously until the beginning of 2022. KM3NeT, taking advantage from the experience of ANTARES, aims to be the most sensitive neutrino telescope in the next generation of detectors. This thesis presents my contributions to both detectors. In particular, the technical part of the work has been developed in collaboration with KM3NeT. It is devoted to the the study of data from the compasses installed in the KM3NeT detection elements: from their calibration before deployment to the analysis of their data in the sea. These compasses allow a tracking of the movements of the detector elements in the sea. In collaboration with ANTARES a physics analysis related to the search of dark matter annihilation in the Sun has been developed analyzing thirteen years of data. New upper limits for neutrino and antineutrino fluxes from dark matter annihilation in the Sun have been obtained, and from these upper limits on the Dark Matter - Nucleon scattering cross section have been obtained. These results improve previous ANTARES results by a factor of 2 and are competitive with those obtained by other experiments.Poirè, C. (2022). Dark Matter Searches Towards the Sun with ANTARES and Positioning Studies for KM3NeT [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/188750TESI

    Collected Papers (on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics), Volume XI

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    This eleventh volume of Collected Papers includes 90 papers comprising 988 pages on Physics, Artificial Intelligence, Health Issues, Decision Making, Economics, Statistics, written between 2001-2022 by the author alone or in collaboration with the following 84 co-authors (alphabetically ordered) from 19 countries: Abhijit Saha, Abu Sufian, Jack Allen, Shahbaz Ali, Ali Safaa Sadiq, Aliya Fahmi, Atiqa Fakhar, Atiqa Firdous, Sukanto Bhattacharya, Robert N. Boyd, Victor Chang, Victor Christianto, V. Christy, Dao The Son, Debjit Dutta, Azeddine Elhassouny, Fazal Ghani, Fazli Amin, Anirudha Ghosha, Nasruddin Hassan, Hoang Viet Long, Jhulaneswar Baidya, Jin Kim, Jun Ye, Darjan Karabašević, Vasilios N. Katsikis, Ieva Meidutė-Kavaliauskienė, F. Kaymarm, Nour Eldeen M. Khalifa, Madad Khan, Qaisar Khan, M. Khoshnevisan, Kifayat Ullah,, Volodymyr Krasnoholovets, Mukesh Kumar, Le Hoang Son, Luong Thi Hong Lan, Tahir Mahmood, Mahmoud Ismail, Mohamed Abdel-Basset, Siti Nurul Fitriah Mohamad, Mohamed Loey, Mai Mohamed, K. Mohana, Kalyan Mondal, Muhammad Gulfam, Muhammad Khalid Mahmood, Muhammad Jamil, Muhammad Yaqub Khan, Muhammad Riaz, Nguyen Dinh Hoa, Cu Nguyen Giap, Nguyen Tho Thong, Peide Liu, Pham Huy Thong, Gabrijela Popović‬‬‬‬‬‬‬‬‬‬, Surapati Pramanik, Dmitri Rabounski, Roslan Hasni, Rumi Roy, Tapan Kumar Roy, Said Broumi, Saleem Abdullah, Muzafer Saračević, Ganeshsree Selvachandran, Shariful Alam, Shyamal Dalapati, Housila P. Singh, R. Singh, Rajesh Singh, Predrag S. Stanimirović, Kasan Susilo, Dragiša Stanujkić, Alexandra Şandru, Ovidiu Ilie Şandru, Zenonas Turskis, Yunita Umniyati, Alptekin Ulutaș, Maikel Yelandi Leyva Vázquez, Binyamin Yusoff, Edmundas Kazimieras Zavadskas, Zhao Loon Wang.‬‬‬
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