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Karn Ngernphat. Tracking origins of Gamma rays in the Milky way galaxy by fermi-LAT all sky maps. Master's Degree(Physics). Kasetsart University. Office of the University Library. : Kasetsart University, 2023.
Tracking origins of Gamma rays in the Milky way galaxy by fermi-LAT all sky maps
Name: Karn Ngernphat
Classification :.LCCS: QC793.5.G32
LCSH:
Gamma rays
LCSH:
Gamma ray astronomy
LCSH:
Dark matter (Astronomy)
LCSH:
Milky Way
Abstract:
We have investigated the distribution of the gamma rays in the Milky Way galaxy. We have used the gamma ray data of 10 energy bands measured by the Fermi Large Area Telescope. The binning and smoothing methods have been used for reducing the number and smoothing the gamma ray data respectively. We have performed the emission coefficient model, including the spherical and cylindrical components, to describe the gamma ray distribution. The cylindrical term represents the astrophysical sources that orbit in the Milky Way galaxy disk. The distribution model was fit to the gamma ray data to find the best-fit parameters. To confirm the results, the model with only the cylindrical term was fit to the data as well. The reduced chi-squares show that the model with the cylindrical plus spherical distribution can explain the gamma ray distribution better than the model with only the cylindrical distribution. We also have considered the modeled intensity from the spherical term and compared them to gamma ray intensity that produces via inverse Compton scattering by electrons and positrons created from dark matter annihilation with seven dark matter profiles and different dark matter masses. The results indicate that the spherical modeled intensities have the same order of magnitude compared to intensity produced by inverse Compton scattering of electrons and positrons from dark matter annihilation with the inner slope of dark matter density profile as well as the Einasto profile.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Maneenate Wechakama
Role:
Thesis Advisor
Name: Pongsakorn Jantaratana
Role:
Thesis CO-Advisor
Created:
2023
Modified:
2025-07-24
Issued:
2025-07-24
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2566/karn-nge-all.pdf
CallNumber:
QC793.5.G32 .K37
eng
DegreeName: Master of Science
Level: Master's Degree
Descipline: Physics
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.034489 วินาที
Karn Ngernphat
| Title | Contributor | Type |
|---|---|---|
| Tracking origins of Gamma rays in the Milky way galaxy by fermi-LAT all sky maps
มหาวิทยาลัยเกษตรศาสตร์ Karn Ngernphat | Maneenate Wechakama | วิทยานิพนธ์/Thesis |
Maneenate Wechakama
| Title | Creator | Type and Date Create |
|---|---|---|
| Tracking origins of Gamma rays in the Milky way galaxy by fermi-LAT all sky maps
มหาวิทยาลัยเกษตรศาสตร์ Maneenate Wechakama | Karn Ngernphat | วิทยานิพนธ์/Thesis |
Pongsakorn Jantaratana
| Title | Creator | Type and Date Create |
|---|---|---|
| Effect of the external magnetic field on carbon dioxide hydrogenation over iron and copper loaded on MCM-41 mesoporous silica catalysts
มหาวิทยาลัยเกษตรศาสตร์ Metta Chareonpanich;Paisan Kongkachuichay;Pongsakorn Jantaratana | Sirapassorn Kiatphuengporn | วิทยานิพนธ์/Thesis |
| Structural and magnetic properties of Fe-Ni alloy powder prepared by reduction in aqueous solution
มหาวิทยาลัยเกษตรศาสตร์ Pongsakorn Jantaratana | Noppakao Srakaew | วิทยานิพนธ์/Thesis |
| Effect of iridium manganese corrosion on magnetic properties of exchange bias thin films
มหาวิทยาลัยเกษตรศาสตร์ Pongsakorn Jantaratana | Supapich Thongdee | วิทยานิพนธ์/Thesis |