Projects and internships

Author: MatthieuPE

config/_default/params.yaml

@@ -49,8 +49,9 @@ footer:
 
 # Localization
 locale:
-  date_format: 'Dec 2, 2024'
-  time_format: '3:04 PM'
+#  date_format: 'Dec 2, 2024'
+#  time_format: '3:04 PM'
+  date_format: '2006-01-02'
 
 # Site features
 features:

content/authors/admin/_index.md

@@ -62,19 +62,19 @@ education:
     # button:
     #   text: 'Read Thesis'
     #   url: 'https://example.com'
-  - area: Master's in Cosmology and Particle Physics
+  - area: Master in Cosmology and Particle Physics
     institution: Université Grenoble Alpes
     date_start: 2023-09-01
     date_end: 2024-07-01
     summary: |
-      Master's program focusing on both theoretical and experimental aspects of cosmology and particle physics.
-  - area: Magister's in Fundamental Physics
+      Master program focusing on both theoretical and experimental aspects of cosmology and particle physics.
+  - area: Magister in Fundamental Physics
     institution: Université Grenoble Alpes
     date_start: 2022-09-01
     date_end: 2024-07-01
     summary: |
       Specialized courses in advanced mathematics applied to physics.
-  - area: Master's in Fundamental Physics (Year 1)
+  - area: Master's in Fundamental Physics
     institution: Université Grenoble Alpes
     date_start: 2022-09-01
     date_end: 2023-07-01
@@ -87,6 +87,48 @@ education:
     summary: |
       Selective Bachelor's degree in Physics, with an emphasis on preparation for a research career.
 
+
+work:
+  - position: Internship in research laboratory
+    date_start: 2024-03-22
+    date_end: 2024-09-13
+    company_name: LPSC (Laboratoire Physique Subatomique et Cosmologie)
+    company_url: 'https://lpsc.in2p3.fr/index.php/en/'
+    company_logo: LPSC_logo
+    location: France - Grenoble
+    summary: |2-
+      * Subject: Study of milky-way sub-halos through their impacts on stellar streams.
+      * Supervisor: Dr. Marine Kuna.  
+  - position: Internship in research laboratory
+    date_start: 2023-05-22
+    date_end: 2023-07-13
+    company_name: LPSC (Laboratoire Physique Subatomique et Cosmologie)
+    company_url: 'https://lpsc.in2p3.fr/index.php/en/'
+    company_logo: LPSC_logo
+    location: France - Grenoble
+    summary: |2-
+      * Subject: Solving a differential equation for calibration of the ATLAS detector via a neural networks.
+      * Supervisor: Dr. Pierre-Antoine Delsart.  
+      * Responsibilities include: introduction to neural networks and ATLAS detector, modelling (python)
+      * More details <a href="https://matthieu-pelissier.fr/project/atlas/">here</a>
+
+  - position: Internship in research laboratory
+    company_name: University of Turku
+    company_url: 'https://www.utu.fi/en'
+    company_logo: turku_logo
+    location: Finland - Turku
+    date_start: 2022-02-01
+    date_end: 2022-06-18
+    summary: |2-
+        * Subject: polarimetric signatures of accreting black holes.
+
+        * Supervisor: Dr. Alexandra Veledina.  
+        
+        * Responsibilities include: bibliography research, theoretical study, modelling (python).
+
+        * More details <a href="https://matthieu-pelissier.fr/project/accretiondisk/">here</a>
+    
+
 # work:
 #   - position: Director of Cloud Infrastructure
 #     company_name: GenCoin

content/experience.md

@@ -32,4 +32,5 @@ sections:
   #   content:
   #     title: Languages
   #     username: admin
+
 ---

content/project/ATLAS/distribution.jpg

@@ -0,0 +1,44 @@
+---
+title: Solving a differential equation for calibration of the ATLAS detector via a neural networks.
+summary: Implement neural network to solve differential equation of 1st or 2nd order. Solving equation on calibration function to improve precision of ATLAS detector.
+tags:
+  - Particle physics
+  - Internships
+  - Python
+date: '2023-12-02T00:00:00Z'
+
+# Optional external URL for project (replaces project detail page).
+external_link: ''
+
+image: #pour faire apparaitre cette image, il faut qu'elle s'appelle 'featured.jpg'
+  caption: Group project to simulate birds behavior using basic rules, or physics laws.
+  focal_point: Smart
+
+links:
+  - icon: github
+    icon_pack: fab
+    name: Codes
+    url: https://github.com/MatthieuPE/Solving-Differential-Equations-Using-Neural-Network
+url_code: ''
+url_pdf: ''
+url_slides: ''
+url_video: ''
+
+# Slides (optional).
+#   Associate this project with Markdown slides.
+#   Simply enter your slide deck's filename without extension.
+#   E.g. `slides = "example-slides"` references `content/slides/example-slides.md`.
+#   Otherwise, set `slides = ""`.
+#slides: example
+---
+
+{{< figure src="distribution.jpg" caption="Calibration Example: using neural network solution for ODE-based calibration function" numbered="false" >}}
+
+**Supervisor :** Pierre-Antoine Delsart, lecturer, ATLAS, LPSC, France.
+
+The particle physics studied at the LHC by the ATLAS detector requires high-precision measurements.
+precision. The energy quantities associated with hadronic jet objects cannot be used directly from experimental measurements, and must be corrected in order to be compared with theoretical predictions.
+from experimental measurements, and must be corrected before they can be compared with theoretical predictions. This
+addresses this problem in the form of a nonlinear second-order differential equation on the calibration function
+function, which has no analytical solution. A neural network is used to solve it. The aim is to
+is to obtain an accurate calibration function by exploiting the non-linear capabilities of neural networks.

content/project/ATLAS/index.md

@@ -0,0 +1,46 @@
+---
+title: Simulating bird flocking behavior - from simple rules to physical models
+summary: Simulation of bird swarms using boids's rules and modeled a physical system to approach collective bird behavior.
+tags:
+  - Study projects
+  - Python
+date: '2023-06-27T00:00:00Z'
+
+# Optional external URL for project (replaces project detail page).
+external_link: ''
+
+image: #pour faire apparaitre cette image, il faut qu'elle s'appelle 'featured.jpg'
+  caption: Group project to simulate birds behavior using basic rules, or physics laws.
+  focal_point: Smart
+
+links:
+  - icon: github
+    icon_pack: fab
+    name: Codes
+    url: https://github.com/MatthieuPE/Bird-flight-with-Boids-rules-or-physical-laws
+url_code: ''
+url_pdf: ''
+url_slides: ''
+url_video: ''
+
+# Slides (optional).
+#   Associate this project with Markdown slides.
+#   Simply enter your slide deck's filename without extension.
+#   E.g. `slides = "example-slides"` references `content/slides/example-slides.md`.
+#   Otherwise, set `slides = ""`.
+#slides: example
+---
+{{< figure src="boids.jpg"   caption="Example of a bird simulation using the rules of birds or the laws of physics. We can note the creation of groups for some parameters." numbered="false" resize_options="1x2">}}
+
+
+
+**Supervisor :** Mourad Ismaïl, Associate Professor in Applied Mathematics, LIPHY, Université Grenoble Alpes, France.
+
+In this project, we aimed to simulate bird swarms in a 2D infinite sky by using three simple rules proposed by Craig W. Reynolds in 1987. These rules, which are widely known as Boids, have been used in the cinema industry to simulate crowds. However, we wanted to model a system following physical laws to approach a collective bird behavior.
+
+We found that to effectively simulate physical rules with many parameters, it is necessary to use at least a fourth-order approximation method, such as the Runge-Kutta method. We can obtain a conservative system, where groups of birds/particles are formed.
+
+Our simulations can be useful for studying systems where clusters appear from any distribution of constituents. However, we acknowledged that the model could still be improved by adding obstacles, fluid effects, a third dimension of space, or restricting the birds' field of vision to 180°.
+
+Overall, the understanding of collective behaviors is a scientific challenge that can be addressed by multiple disciplines such as biology, physics, and social sciences. By modeling the behavior of bird swarms, we can gain insights into how systems transition from a uniform state to swarm formations, which has practical applications in various fields.
+

content/project/Boids simulation/boids.jpg

@@ -0,0 +1,29 @@
+---
+title:  Quantum states of neutrons in a gravitational field
+summary: Oral presentation of quantum states of neutrons placed in a gravitational field and operation of the GRANIT experiment.
+tags:
+  - Particle physics
+  - Study projects
+date: '2022-01-27T00:00:00Z'
+
+# Optional external URL for project (replaces project detail page).
+external_link: ''
+
+image:
+  caption: Model of a thick accretion disk around massive black holes, seen by an observer at infinity. The color refers to the synchrotron radiation produced with a vertical magnetic field.
+  focal_point: Smart
+
+
+# Slides (optional).
+#   Associate this project with Markdown slides.
+#   Simply enter your slide deck's filename without extension.
+#   E.g. `slides = "example-slides"` references `content/slides/example-slides.md`.
+#   Otherwise, set `slides = ""`.
+#slides: example
+---
+**Supervisor :**  Benoit Chalopin, lecturer, LCAR, Paul Sabatier University, Toulouse.
+
+In many fields of physics, when studying the motion of a particle at the microscopic scale, the gravitational interaction is led to be neglected in front of other interactions such as the electromagnetic interaction, or at shorter range the strong and weak interactions. Indeed, if we focus on the interactions between  the proton and the electron forming a hydrogen atom, we can show that
+the gravitational interaction is 1040 times less than the electromagnetic interaction. However, at this scale, gravity can imply a quantum behavior that we have presented.
+During this presentation, we have approached the problem from a theoretical point of view before considering an experimental approach established by the GRANIT experiment. 
+

content/project/Boids simulation/index.md

@@ -0,0 +1,49 @@
+---
+title: Polarimetric signatures of accreting black holes
+summary: Project realized during an internship with Dr. Alexandra Veledina.
+tags:
+  - Astrophysics
+  - Internships 
+  - Python
+
+date: '2022-07-02T22:00:00Z'
+
+# Optional external URL for project (replaces project detail page).
+external_link: ''
+
+image: #pour faire apparaitre cette image, il faut qu'elle s'appelle 'featured.jpg'
+  caption: Model of a thick accretion disk around massive black holes, seen by an observer at infinity. The color refers to the synchrotron radiation produced with a vertical magnetic field.
+  focal_point: Smart
+
+links:
+  - icon: github
+    icon_pack: fab
+    name: Codes
+    url: https://github.com/MatthieuPE
+url_code: ''
+url_pdf: ''
+url_slides: ''
+url_video: ''
+
+# Slides (optional).
+#   Associate this project with Markdown slides.
+#   Simply enter your slide deck's filename without extension.
+#   E.g. `slides = "example-slides"` references `content/slides/example-slides.md`.
+#   Otherwise, set `slides = ""`.
+#slides: example
+---
+{{< figure src="BHimage.jpg" caption="Model of a thick accretion disk around massive black holes, seen by an observer at infinity. The color refers to the synchrotron radiation produced with a vertical magnetic field." numbered="false" >}}
+
+
+
+**Supervisor :** Dr. Alexandra Veledina, post-doctoral fellow ,Tuorla observatory, University of Turku, Finland.
+
+ The black holes are compact celestial objects whose mass can be several times that of the sun. The gravity exerted is such that, from a certain surface called the event horizon, nothing can escape, not even light, which explains their name. Although it may seem paradoxical, it is possible to observe them. These objects are surrounded by an accretion disc, whose constituent matter spins around the black hole to fractions of the speed of light. The disc emits light. This is what has enabled the Event Horizon Telescope Collaboration to obtain in 2019 the first image of a black hole, or more precisely the first image of a black hole accretion disc (see cover). 
+
+
+The study carried out during this internship concerns the modelling of radiation signature of matter near black hole, similar to that of M87* observed in 2019. To study a black hole theoretically, the most suitable tool is general relativity, considering gravity as a reason for deformation of space time. The framework used to study a massive, non-rotating spherical object is the Schwarzschild metric, which characterises the deformation of space-time caused by such an object. The light emanating from the accretion disc follows a trajectory to reach the observer. These paths are not simply straights lines as in the limit of flat space-time, but are curved and constitute geodesic lines. Calculation of photon paths can be done exactly via ray tracing, or  approximately via analytical methods. We thus obtain the image of the accretion disc perceived from different inclinations, by an observer placed at infinity.
+
+
+Light can be considered as an electromagnetic wave, oscillating through space. For different photons, the electric field differs, but if there is a preferred direction, the light is polarized. This is subject to the effects of special and general relativity. Thus the polarisation of the light emitted by the fluid constituting the accretion disc is not the same as that measured by the observer. By using basis changes, we were able to obtain the polarisation angle measured in the observer's sky.
+By first approximating an infinitely thin accretion disc, then with a non-zero thickness, we were able to obtain an image of an accretion disc around black hole, as well as the degree and angle of polarisation at each point.
+