Global ETD Search

31	An ALMA Dynamical Mass Estimate of the Proposed Planetary-mass Companion FW Tau C Wu, Ya-Lin, Sheehan, Patrick D. 08 September 2017 (has links) Dynamical mass estimates down to the planet-mass regime can help to understand planet formation. We present Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm observations of FW Tau C, a proposed similar to 10M(Jup) planet-mass companion at similar to 330 au from the host binary FW Tau AB. We spatially and spectrally resolve the accretion disk of FWTau C in (CO)-C-12 (2-1). By modeling the Keplerian rotation of gas, we derive a dynamical mass of similar to 0.1 M-circle dot. Therefore, FW Tau C is unlikely a planet, but rather a low-mass star with a highly inclined disk. This also suggests that FW Tau is a triple system consisting of three similar to 0.1. M-circle dot stars. accretion, accretion disks stars: individual (FW Tau) techniques: interferometric
32	A Thermodynamic View of Dusty Protoplanetary Disks Lin, Min-Kai, Youdin, Andrew N. 08 November 2017 (has links) Small solids embedded in gaseous protoplanetary disks are subject to strong dust-gas friction. Consequently, tightly coupled dust particles almost follow the gas flow. This near conservation of the dust-to-gas ratio along streamlines is analogous to the near conservation of entropy along flows of (dust-free) gas with weak heating and cooling. We develop this thermodynamic analogy into a framework to study dusty gas dynamics in protoplanetary disks. We show that an isothermal dusty gas behaves like an adiabatic pure gas, and that finite dust-gas coupling may be regarded as effective heating/cooling. We exploit this correspondence to deduce that (1) perfectly coupled, thin dust layers cannot cause axisymmetric instabilities; (2) radial dust edges are unstable if the dust is vertically well-mixed; (3) the streaming instability necessarily involves a gas pressure response that lags behind dust density; and (4) dust-loading introduces buoyancy forces that generally stabilize the vertical shear instability associated with global radial temperature gradients. We also discuss dusty analogs of other hydrodynamic processes (e.g., Rossby wave instability, convective overstability, and zombie vortices) and how to simulate dusty protoplanetary disks with minor tweaks to existing codes for pure gas dynamics. accretion, accretion disks hydrodynamics instabilities methods: analytical methods: numerical protoplanetary disks
33	ASASSN-18aan: An Eclipsing SU UMa-type Cataclysmic Variable with a 3.6-hour Orbital Period and a Late G-type Secondary Star / ASASSN-18aan: 晩期G型の伴星を伴った軌道周期3.6時間の食を起こすSU Uma型激変星 Wakamatsu, Yasuyuki 23 March 2021 (has links) 京都大学 / 新制・課程博士 / 博士(理学) / 甲第23014号 / 理博第4691号 / 新制\|\|理\|\|1673(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)准教授野上大作, 教授嶺重慎, 教授太田耕司 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM Cataclysmic variables Dwarf novae Accretion disks Eclipse Tidal truncation radius 400
34	The Nature of Super-Eddington Outflow around Black Holes / ブラックホール周りの超エディントン噴出流の特性 Takeuchi, Shun 24 March 2014 (has links) 京都大学 / 0048 / 新制・論文博士 / 博士(理学) / 乙第12813号 / 論理博第1539号 / 新制\|\|理\|\|1577(附属図書館) / 31300 / (主査)教授嶺重慎, 准教授前田啓一, 教授長田哲也 / 学位規則第4条第2項該当 / Doctor of Science / Kyoto University / DFAM accretion accretion disks ISM: clouds ISM: jets and outﬂows instabilities radiative transfer magnetohydrodynamics: MHD 400
35	X-ray detectability of Galactic isolated black holes / X線による銀河系内孤立ブラックホールの観測可能性 Matsumoto, Tatsuya 26 March 2018 (has links) 京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第20912号 / 理博第4364号 / 新制\|\|理\|\|1626(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授井岡邦仁, 教授川合光, 教授田中貴浩 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM Black holes Accretion disks X-ray astronomy X-ray novae 400
36	New methods for probing black-hole space-time based on infalling gas clouds / 落下ガス雲に基づいたブラックホール時空の新検証法 Moriyama, Kotaro 26 March 2018 (has links) 京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第20919号 / 理博第4371号 / 新制\|\|理\|\|1627(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授嶺重慎, 准教授前田啓一, 教授太田耕司 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM accretion accretion disks black hole physics gravitation relativistic process magnetohydrodynamics (MHD) 400
37	Monte Carlo/Fokker-Planck simulations of Accretion Phenomena and Optical Spectra of BL Lacertae Objects Finke, Justin David 25 September 2007 (has links) No description available. Physics, Astronomy and Astrophysics X-rays: binaries radiative transfer methods: numerical BL Lacertae objects accretion, accretion disks
38	Quasar Structure from Microlensing in Gravitationally Lensed Quasars Morgan, Christopher Warren 14 April 2008 (has links) No description available. Astronomy Astrophysics accretion, accretion disks dark matter gravitational lensing quasars: general
39	Structure of the outflow from super-massive black-hole seeds and its impact on the cosmological scales / 超大質量種ブラックホールからのアウトフロー構造と宇宙論的スケールへの影響 Botella Lasaga, Ignacio 23 March 2022 (has links) 京都大学 / 新制・課程博士 / 博士(理学) / 甲第23705号 / 理博第4795号 / 新制\|\|理\|\|1686(附属図書館) / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授嶺重慎, 准教授前田啓一, 准教授野上大作 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM accretion accretion disks hydrodynamics radiation: dynamics stars: super massive black holes early Universe methods: numerical 400
40	Multiwavelength Study of the Black Hole X-ray Binary MAXI J1820+070 in the Rebrightening Phase / 多波長観測で探る再増光期におけるブラックホールX線連星 MAXI J1820+070の研究 Yoshitake, Tomohiro 25 March 2024 (has links) 京都大学 / 新制・課程博士 / 博士(理学) / 甲第25120号 / 理博第5027号 / 京都大学大学院理学研究科物理学・宇宙物理学専攻 / (主査)教授上田佳宏, 准教授野上大作, 教授前田啓一 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM accretion individual (MAXI J1820+070) X-rays: binaries 400

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