L'étude de la structure interne des hadrons nous permet de comprendre la nature des interactions entre les partons, les quarks et les gluons, décrites par la Chromodynamique Quantique. Les processus de diffusion élastique, qui ont été utilisés avec succès pour mesurer les facteurs de forme des nucléons, sont inclus dans ce cadre. Les processus inélastiques sont également inclus dans ce cadre, ils nous permettent d'extraire beaucoup d'information grâce au développement des distributions de partons (PDFs). Par conséquent, tandis que la diffusion élastique d'électrons par le nucléon nous fournit des informations sur la répartition des charges, et donc de la distribution spatiale des composants du nucléon, la diffusion inélastique présente des informations sur la distribution d'impulsions au moyen des PDFs. Cependant, dans les processus inélastiques, il est possible d'étudier les processus exclusifs tels que la Diffusion Compton Profondément Virtuelle (DVCS), qui nous permet d'accéder aux distributions spatiale et d'impulsions des quarks simultanément. Ceci est possible grâce aux fonctions généralisées des distributions de partons (GPDS), qui nous permettent de corréler les deux types de distributions. Le processus connu sous le nom DVCS est le moyen le plus facile pour accéder aux GPDS. Ce procédé implique la diffusion d'un électron par un proton, au moyen de l'échange d'un photon virtuel, qui entraîne la diffusion des particules initiales et l'émission d'un photon réel. Ce processus est en concurrence avec le processus dit Bethe-Heitler, dans lequel le photon réel est émis par l'électron initial ou final. En raison de la faible section efficace de ce type de procédé, de l'ordre du nb, il est nécessaire d'utiliser une installation capable de fournir une haute luminosité pour réaliser les expériences. L'une de ces installations est le Thomas Jefferson National Accelerator Facility, où l'expérience appelée "Complete Separation of Virtual Photon and π⁰ Electroproduction Observables of Unpolarized Proton" a été réalisée au cours de la période entre Octobre et Décembre de 2010. Le principal objectif de cette expérience est la séparation de la contribution du terme provenant du DVCS à partir du terme d'interférence, résultant de la contribution du BH. Cette séparation est appelée "Séparation Rosenbluth". Cette thèse porte sur le calorimètre électromagnétique qui a été utilisé pour détecter le photon dans l'expérience E07-007 à Jefferson Lab. Il y a aussi une introduction théorique à l'étude de la structure du nucléon, en révisant les concepts de facteurs de forme et des distributions de partons à travers des processus élastiques et inélastiques. Le calcul de la section efficace de la leptoproduction de photons est décrite en détail, ainsi que les buts de l'expérience E07-007. Dans cette thèse on décrit l'analyse des données enregistrées par le calorimètre électromagnétique, avec le but d'obtenir les variables cinématiques des photons réels résultants des réactions DVCS. Finalement, on décrit la sélection des événements à partir des données stockées, les réductions appliquées aux variables cinématiques et la soustraction de fond. En outre, le processus d'extraction des observables nécessaires pour le calcul de la section efficace de la leptoproduction de photons est décrite, ainsi que les principales étapes suivies pour effectuer la simulation Monte-Carlo utilisée dans ce calcul. Les sections efficaces obtenues sont indiquées à la fin de cette thèse.

X-ray diffraction and scattering, X-ray spectroscopy, and X-ray crystallography are widely used in the life sciences, material science, and medical diagnosis. High-quality and high-brightness X-rays are a strong requirement to improve applications. Inverse Compton scattering (ICS) X-ray source has attracted great interests worldwide lately. To significantly enhance the average X-ray photon flux, a compact electron storage-ring combined with a high finesse optical enhancement cavity (OEC) can be utilized. In such a system, the collision rate between the electron beam and the laser pulse is greatly increased to the MHz range, enabling a photon flux up to 10¹³ph/s.In the first chapter, I describe the motivation behind the development of OEC based on ICS X-ray source. The characteristics of this kind of X-ray source are summarized, compared to those of the conventional low-repetition-rate Terawatt laser system based on ICS X-ray source. The latest progress and research status of OEC based on ICS X-ray source are presented. Pulsed-laser injected high-finesse OEC stacking theory and properties are discussed in Chapter 2. Not only does the OEC based on ICS X-ray source require the laser pulse repetition rate to be matched to the free spectral range (FSR) of the cavity, where both also have to match the electron storage-ring circulation frequency. In addition, we have to match the phase shift of the laser repetition rate to the phase offset introduced by the dispersion of the cavity mirrors, since our cavity finesse design value is quite high. The stacking theory is analyzed in the frequency domain. Cavity properties, including cavity mirror dispersion, finesse, and FSR, are discussed in detail. A laser frequency comb and OEC coupling is analyzed also. The laser source development is presented in Chapter 3. We constructed a mode-locked fiber laser based on nonlinear polarization rotation. The locking model, locking techniques, and the theory, simulations and experimental tests of tilt locking (TL) in the pulsed laser injected high-finesse OEC are discussed in Chapter 4. We succeeded in locking a pulsed laser to a high-finesse cavity with the TL technique. The experimental results show that the TL and the Pound-Drever-Hall techniques have the same performance: stable locking, high sensitivity, and the same power coupling rate for picosecond laser pulse case, while the test results for full spectrum TL locking show that it is uneasy to align the split-photodiode to the beam waist.Based on the above experimental study and tests, we design the OEC system for Tsinghua University X-ray project in Chapter 5. The expected X-ray flux is 10¹º to 10¹³ ph/s. We detail every subsystem requirement.

X-ray diffraction and scattering, X-ray spectroscopy, and X-ray crystallography are widely used in the life sciences, material science, and medical diagnosis. High-quality and high-brightness X-rays are a strong requirement to improve applications. Inverse Compton scattering (ICS) X-ray source has attracted great interests worldwide lately. To significantly enhance the average X-ray photon flux, a compact electron storage-ring combined with a high finesse optical enhancement cavity (OEC) can be utilized. In such a system, the collision rate between the electron beam and the laser pulse is greatly increased to the MHz range, enabling a photon flux up to 10¹³ph/s.In the first chapter, I describe the motivation behind the development of OEC based on ICS X-ray source. The characteristics of this kind of X-ray source are summarized, compared to those of the conventional low-repetition-rate Terawatt laser system based on ICS X-ray source. The latest progress and research status of OEC based on ICS X-ray source are presented. Pulsed-laser injected high-finesse OEC stacking theory and properties are discussed in Chapter 2. Not only does the OEC based on ICS X-ray source require the laser pulse repetition rate to be matched to the free spectral range (FSR) of the cavity, where both also have to match the electron storage-ring circulation frequency. In addition, we have to match the phase shift of the laser repetition rate to the phase offset introduced by the dispersion of the cavity mirrors, since our cavity finesse design value is quite high. The stacking theory is analyzed in the frequency domain. Cavity properties, including cavity mirror dispersion, finesse, and FSR, are discussed in detail. A laser frequency comb and OEC coupling is analyzed also. The laser source development is presented in Chapter 3. We constructed a mode-locked fiber laser based on nonlinear polarization rotation. The locking model, locking techniques, and the theory, simulations and experimental tests of tilt locking (TL) in the pulsed laser injected high-finesse OEC are discussed in Chapter 4. We succeeded in locking a pulsed laser to a high-finesse cavity with the TL technique. The experimental results show that the TL and the Pound-Drever-Hall techniques have the same performance: stable locking, high sensitivity, and the same power coupling rate for picosecond laser pulse case, while the test results for full spectrum TL locking show that it is uneasy to align the split-photodiode to the beam waist.Based on the above experimental study and tests, we design the OEC system for Tsinghua University X-ray project in Chapter 5. The expected X-ray flux is 10¹º to 10¹³ ph/s. We detail every subsystem requirement.

This dissertation seeks to identify, contextualize, and explain the achievement of late modernist novelists. Late modernism represents a significant, under-examined chapter in the development of the twentieth-century novel. Unlike the majority of their peers in the decades after modernism’s height, novelists such as Henry Green, Ivy Compton-Burnett, and Elizabeth Bowen—and the best-known, Samuel Beckett—continue to innovate in prose rather than returning to realism. Unlike their predecessors, late modernists move towards doubt, eschewing the sometimes ultimately redemptive ethos of high modernism. They do so without the insistence of later postmodernists, however, or their playful mood. The result is something new, strange, and “in between.” The aims of this study are to specify the nature of late modernist style, place it in its aesthetic and historical context, and explain its significance. Each chapter is a close reading of key works by one writer: each novelist uses different techniques to add to the late modernist aesthetic, but they all move in the same direction. The first chapter explores Henry Green’s work, analyzing the textual omissions and narrative construction that make his novels so evasive. In Compton-Burnett’s case, the focus is on how dialogue creates a constantly shifting moral world in which nothing can be taken for granted. The chapter on Beckett explores repetition, both as a microscopic stylistic tool and an organizing device that prevents the text from reaching conclusion. In examining Bowen, the centre is how her syntax circles continually around various kinds of “nothingness” and self-reflexively suggests ways to explore it. This study arranges late modernist novelists in a new continuum alongside Samuel Beckett, with the result that Beckett seems less a unique genius, and the other late modernist writers seem less eccentric and more profoundly challenging. They all seek ways to go on writing when doing so seems impossible. Late modernists bring something new to the novel. Through the smallest stylistic gestures, their works make and unmake themselves, refusing to allow the reader finality. They avoid the aesthetic and philosophical associations of either consolation or utter uncertainty; late modernists matter by refusing to matter in a familiar way.

This dissertation seeks to identify, contextualize, and explain the achievement of late modernist novelists. Late modernism represents a significant, under-examined chapter in the development of the twentieth-century novel. Unlike the majority of their peers in the decades after modernism’s height, novelists such as Henry Green, Ivy Compton-Burnett, and Elizabeth Bowen—and the best-known, Samuel Beckett—continue to innovate in prose rather than returning to realism. Unlike their predecessors, late modernists move towards doubt, eschewing the sometimes ultimately redemptive ethos of high modernism. They do so without the insistence of later postmodernists, however, or their playful mood. The result is something new, strange, and “in between.” The aims of this study are to specify the nature of late modernist style, place it in its aesthetic and historical context, and explain its significance. Each chapter is a close reading of key works by one writer: each novelist uses different techniques to add to the late modernist aesthetic, but they all move in the same direction. The first chapter explores Henry Green’s work, analyzing the textual omissions and narrative construction that make his novels so evasive. In Compton-Burnett’s case, the focus is on how dialogue creates a constantly shifting moral world in which nothing can be taken for granted. The chapter on Beckett explores repetition, both as a microscopic stylistic tool and an organizing device that prevents the text from reaching conclusion. In examining Bowen, the centre is how her syntax circles continually around various kinds of “nothingness” and self-reflexively suggests ways to explore it. This study arranges late modernist novelists in a new continuum alongside Samuel Beckett, with the result that Beckett seems less a unique genius, and the other late modernist writers seem less eccentric and more profoundly challenging. They all seek ways to go on writing when doing so seems impossible. Late modernists bring something new to the novel. Through the smallest stylistic gestures, their works make and unmake themselves, refusing to allow the reader finality. They avoid the aesthetic and philosophical associations of either consolation or utter uncertainty; late modernists matter by refusing to matter in a familiar way.

In this work, three members of the RERh2Si2 (RE = rare earth) series have been studied by means of UV and soft X-ray ARPES in combination with ab initio band structure calculations, XMLD and high resolution Compton scattering. Hereby, various aspects of the rich 4f physics in these rare-earth-based intermetallics have been highlighted, which include itinerant surface magnetism, Fermi surface folding across an antiferromagnetic phase transition and the Fermi surface crossover with temperature in a Kondo lattice. GdRh2Si2 is an antiferromagnet with alternating layers of ferromagnetically coupled Gd layers, which are separated by Si-Rh-Si buffers. Our combined UV-ARPES experiments and electronic structure calculations show that cleavage along a basal plane leaves behind either a Gd- or a Si-terminated surface, where the latter bears two distinct two-dimensional electron states (2DESs): a purely two-dimensional Shockley surface state and a Dirac-cone-type surface resonance. Both 2DESs at the Si-terminated surface couple via exchange interaction to the large Gd 4f moments buried below the topmost Si-Rh-Si trilayer and reveal a strong spin splitting with values up to ~185 meV in the Shockley state, when the magnetic ordering evolves. Our UV-ARPES and XMLD results suggest that both 2DESs play a decisive role in the mediation of the magnetic ordering at the surface, which first develops independently from the ordering in the bulk even far below the Néel temperature of 107 K, before it connects to the bulk magnetism at ~60 K. We further studied the influence of potassium deposition on the 2DESs by ARPES. In addition, our calculations suggest a small splitting of the Shockley surface state even in the paramagnetic phase and an unusual Rashba-like spin texture with a triple winding of the electron spins along the Fermi surface contour. However, in the present work this small splitting could not be resolved by the ARPES experiments due to the large lifetime broadening of the surface bands. The rest of this work takes a closer look at the bulk Fermi surface of the prominent heavy-fermion compound YbRh2Si2. We first established with the help of UV-ARPES measurements on EuRh2Si2, that the large Fermi surface in YbRh2Si2, which has previously been observed at low temperatures down to 1 K, indeed contains one additional hole per unit cell originating from the delocalized degree of freedom of the 4f hole in accordance with Luttinger’s Fermi surface sum rule, even though the Yb valence deviates only very slightly from Yb3+. This finding confirms, that the observed large Fermi surface in YbRh2Si2 is indeed a manifestation of a true many-body effect arising from strong electronic correlations. We have hereby made usage of the unique property of EuRh2Si2 being the only compound in the RERh2Si2 series with a divalent rare-earth ion. This offers the valuable opportunity to gauge experimentally and in the absence of strong renormalization effects on the electronic structure the topology and size of the large Fermi surface, which is expected for a nearly trivalent RERh2Si2 Kondo lattice. Upon entering the antiferromagnetic phase, the Fermi surface of EuRh2Si2 is subject to band folding, as observed by soft X-ray ARPES, due to the doubled size of the unit cell. This leads to a pronounced splitting and fragmentation of the Fermi surface, which could clearly be observed in the Fermi surface maps obtained by high-resolution UV-ARPES. In light of certain parallels between EuRh2Si2 and YbRh2Si2 concerning magnetic correlations, these findings might suggest that qualitatively similar changes of the Fermi surface topology upon entering the antiferromagnetic phase might also be of relevance for YbRh2Si2. This might have serious implications for the understanding of the enigmatic quantum phase transition in this compound and should certainly be taken into account. We have further addressed the long-standing problem of the temperature dependence of the Fermi volume in Kondo lattices. Theory predicts a crossover of the Fermi surface from large to small upon increasing temperature, as the 4f electron (or hole in Yb-based Kondo lattices) leaves the strong-coupling regime, where its degree of freedom is dissolved into the Fermi sea, and becomes effectively localized and decoupled from the conduction band. However, a comprehensive experimental proof of this prediction is still lacking to date. In this work, we have employed high-resolution Compton scattering to derive the EOND of YbRh2Si2, which can be viewed as the projection of the Fermi volume onto a two-dimensional plane in momentum space. Our measurements have indeed revealed pronounced changes in the EOND of YbRh2Si2 between 14 K and 300 K, which can be attributed to a reconstruction of the Fermi surface with increasing temperature. Comparison to equivalent measurements on YbCo2Si2, a reference system for the small Fermi surface, allowed us to conclude, that the YbRh2Si2 EOND at 300 K reflects a small Fermi surface, which results from a transition of the Fermi volume from large to small due to the temperature-driven breakdown of the Kondo lattice effect. To the best of our knowledge, this is the first experiment of this kind, which comprehensively visualizes the Fermi surface transition with temperature over the whole Brillouin zone in an Yb-based Kondo lattice. / Diese Arbeit untersucht drei Vertreter aus der Gruppe der RERh2Si2 Verbindungen (wobei RE für ein Seltenerdelement gemäß der englischen Bezeichung rare earth steht), welche mittels Ultraviolett- und Röntgenphotoelektronenspektroskopie (UV-ARPES bzw. SX-ARPES) in Kombination mit Bandstrukturrechnungen, linearem magnetischem Röntgendichroismus (XMLD) sowie hochauflösender Comptonstreuung untersucht wurden. Hierbei wurden verschiedene Aspekte der reichhaltigen Physik in diesen intermetallischen Verbindungen, die von den 4f-Elektronen herrührt, beleuchtet, welche Phänomene wie itineranten Oberflächenmagnetismus, die Faltung einer Fermifläche durch einen antiferromagnetischen Phasenübergang sowie die temperaturabhängige Transformation der Fermifläche in einem Kondogitter einschließen. GdRh2Si2 ist ein Antiferromagnet, in welchem ferromagnetisch geordnete Gd-Lagen mit alternierender Ausrichtung gestapelt sind und jeweils durch einen dreilagigen Puffer aus Si-Rh-Si getrennt werden. Unsere UV-ARPES-Messungen und Bandstrukturrechnungen haben gezeigt, dass ein Auseinanderbrechen der Probe entlang einer Basalebene entweder eine Gd- oder eine Si-terminierte Oberfläche hinterlässt, wobei letztere zwei verschiedene zweidimensionale Elektronenbänder (2D-EB) aufweist: ein rein zweidimensionales Oberflächenband vom Shockley-Typ, sowie eine Oberflächenresonanz in der Form eines Dirac-Kegels. Beide 2D-EB auf der Si-terminierten Oberfläche koppeln mittels Austauschwechselwirkung an die großen magnetischen Gd-4f-Momente, welche sich unter der obersten Si-Rh-Si-Schicht befinden, und zeigen eine starke Aufspaltung mit Werten von bis zu ~185 meV im Shockley-Zustand, sobald sich magnetische Ordnung ausgebildet hat. Unsere ARPES- und XMLD-Messungen legen nahe, dass beide 2D-EB eine entscheidende Rolle bei der Vermittlung der magnetischen Ordnung an der Oberfläche spielen, welche sich zunächst auch deutlich unterhalb der Néel-Temperatur von 107 K unabhängig von der Magnetisierung im Volumen entwickelt, bevor sie an die Volumenmagnetisierung etwa unterhalb von 60 K angebunden wird. Wir haben ferner den Einfluss des Aufdampfens von Kalium auf die 2D-EB mittels ARPES studiert. Desweiteren haben unsere Rechnungen eine schwache Aufspaltung des Shockley-Zustandes selbst in der paramagnetischen Phase ergeben, welche mit einer ungewöhnlichen Rashba-artigen Spintextur einhergeht, die eine Dreifachwindung der Elektronenspins entlang der Fermiflächenkontur aufweist. Im Rahmen dieser Arbeit konnte diese kleine Aufspaltung jedoch nicht mittels ARPES aufgelöst werden, da die lebensdauerbedingte Verbreiterung der Shockley-Bänder leider zu groß war. Der verbleibende Teil der Arbeit widmet sich der Fermifläche im Volumen der bekannten Schwere-Fermionen-Verbindung YbRh2Si2. Mit Hilfe von UV-ARPES-Messungen an EuRh2Si2 haben wir zunächst nachgewiesen, dass die große Fermifläche, die vormals in YbRh2Si2 bei tiefen Temperaturen bis > 1 K beobachtet wurde, tatsächlich einen zusätzlichen lochartigen Zustand pro Einheitszelle enthält, der in Übereinstimmung mit der Luttinger-Summenregel von dem delokalisierten Freiheitsgrad des 4f-Lochs stammt, obwohl die Valenz der Yb-Ionen nur sehr geringfügig von Yb3+ abweicht. Diese Erkenntnis bestätigt, dass die große Fermifläche in YbRh2Si2 in der Tat einen Vielteilcheneffekt widerspiegelt, der auf starke elektronische Korrelationen zurückzuführen ist. Hierbei haben wir uns die einzigartige Eigenschaft von EuRh2Si2, dass es die einzige Verbindung in der RERh2Si2-Serie mit zweiwertigen Seltenerd-Ionen ist, zunutze gemacht. Dies bietet die wertvolle Gelegenheit, die Topologie und Größe der großen Fermifläche, wie man sie in einem nahezu dreiwertigen RERh2Si2-Kondogitter erwarten würde, experimentell und in Abwesenheit von starken Renormierungseffekten auf die elektronische Struktur abzuschätzen. Wenn EuRh2Si2 in die antiferromagnetische Phase übergeht, verdoppelt sich die Größe der Einheitszelle und die Fermifläche wird gefaltet, wie wir mittels SX-ARPES beobachten konnten. Hochauflösende UV-ARPES-Messungen haben gezeigt, dass die Fermifläche aufgrund der Faltung eine deutliche Aufspaltung und Fragmentierung erfährt. Diverse Parallelen zwischen EuRh2Si2 und YbRh2Si2 und ihren magnetischen Korrelationen legen nahe, dass qualitativ ähnliche Änderungen in der Fermiflächentopologie aufgrund des Eintritts in die antiferromagnetische Phase auch für YbRh2Si2 von Bedeutung sein könnten. Dies könnte ernstzunehmende Folgen für das Verständnis des rätselhaften Quantenphasenübergangs in diesem System haben, die sicherlich in Betracht gezogen werden müssten. Der letzte Teil der Arbeit beschäftigt sich mit dem recht lang bestehenden Problem der Temperaturabhängigkeit des Fermiflächenvolumens in Kondogittern. Die Theorie sagt einen Übergang von einer großen zu einer kleinen Fermifläche mit größer werdender Temperatur voraus, da das 4f-Elektron (oder 4f-Loch in Yb-basierten Kondogittern) den Bereich starker Kopplung, in welchem sein Freiheitsgrad Teil des Fermi-Sees ist, verlässt und sich effektiv lokalisiert und vom Leitungsband entkoppelt. Dennoch fehlt bis heute ein umfassender experimenteller Nachweis dieser Vorhersage. Im Rahmen dieser Arbeit wurde mittels hochauflösender Comptonstreuung die Elektronenbesetzungszahldichte (EOND, vom englischen Ausdruck electron occupation number density) in YbRh2Si2 ermittelt, welche als Projektion des Fermivolumens auf eine zweidimensionale Ebene im Impulsraum verstanden werden kann. Unsere Messungen zeigten deutliche Veränderungen in der EOND in YbRh2Si2 zwischen 14 K und 300 K, die auf eine Rekonstruktion der Fermifläche mit zunehmender Temperatur zurückgeführt werden können. Aufgrund eines Vergleichs mit äquivalenten Messungen an YbCo2Si2, einem Referenzsystem für die kleine Fermifläche, schlussfolgern wir, dass die EOND von YbRh2Si2 bei 300 K eine kleine Fermifläche widerspiegelt, welche aus dem Übergang von einem großen zu einem kleinen Fermivolumen infolge des temperaturbedingten Zusammenbruchs des Kondogittereffekts resultiert. Das ist nach unserem Wissen das erste Experiment dieser Art, welches den temperaturinduzierten Übergang des Fermivolumens in einem Yb-basierten Kondogitter in umfassender Weise in der gesamten Brillouinzone visualisiert.

This thesis sums up a bachelor project in which gamma-ray emission from an extra-galactic source (S50716+71) is studied using data collected by the Fermi Large Area Telescope (LAT). The emission consists of 12,5 years of data (April 2008 to February 2020) in the energy range 100 MeV - 300 GeV. The source has a high significance (>298) and is believed to be an active galactic nucleus in which there have to be mechanisms able to accelerate photons to these high energies. The mechanisms are believed to be of non-thermal origin and the general consensus is that they are the synchrotron radiation-process as well as the inverse Compton-process. These processes are discussed to some extent in the thesis as part of a fairly large theoretical background. The data was analyzed in several ways. The Enrico software contained in the package Fermitools provided by NASA was used to create curves of the flux as a function of time (lightcurves) as well as spectral distributions. The light curve showed that the source varies considerably with hardly any “quiet periods” at all during the twelve-year period. The light curve also showed a fast rise and fall of intensity between the high intensity and low intensity points. Spectral analyses were made for six chosen time-periods of interest through the fitting of three different functions, a powerlaw-function, a logparabola-function and a powerlaw function with exponential cutoff. The powerlaw function with exponential cutoff was favored in all periods except one where the log parabola-function was preferred. The data from one of the periods was then put into a multi-wavelength context of the source showing that the data is in agreement with previous collected data. This broad spectrum was then used to model the underlying energy distribution through a theoretical framework called the Synchrotron Self-Compton model (SSC). This was done using a modelling software called JetSet. The modelling resulted in a reasonable fit of the data and parameters that overall (at least in magnitude) seem to agree with results from other publications.

The subject of this thesis is the analysis and modeling of the active galactic nucleus PKS 1510-089. The aim is to present a thorough background of active galactic nuclei combined with the analysis and modeling of a specific active galactic nucleus. The results will then be  linked to previous research and theories about active galactic nuclei. The data used in the analysis were retrieved from the Fermi Gamma-ray Space Telescope. A light curve analysis that extended over 12 years provided knowledge about variability and presented four interesting flaring periods. The four periods underwent a spectral analysis, and the results showed that a log parabolic curvature could best describe all four periods. The last step before the modeling was to create spectral energy distributions for all four periods to retrieve spectral points from wavelengths other than those available from Fermi. Unfortunately, there were only sufficient data for one period. That period was later used in the modeling and resulted in a well-fitted external Compton model, which was compared, with relatively good results, with previous research.

京都大学 / 0048 / 新制・課程博士 / 博士(エネルギー科学) / 甲第18664号 / エネ博第309号 / 新制||エネ||63(附属図書館) / 31578 / 京都大学大学院エネルギー科学研究科エネルギー応用科学専攻 / (主査)教授 大垣 英明, 教授 白井 康之, 教授 松田 一成 / 学位規則第4条第1項該当 / Doctor of Energy Science / Kyoto University / DFAM

No description available.