Colloquium of Theoretical Astronomy Division
Colloquium2015
をテンプレートにして作成
開始行:
[[Colloquium]]
#norelated
* 理論コロキウム2015 [#z407468f]
// 理論コロキウムは原則として毎週水曜日の午後14:10から開...
// 原則として英語で講演していただきますが、
// 講師・参加者が日本人だけの場合は日本語に切り替えてくだ...
// 台内・台外また分野を問わず広く発表者（台外の方には旅費...
//お問い合わせは以下のコロキウム係までお願いします（_AT_...
//
// - 銭谷 誠司 seiji.zenitani_AT_nao.ac.jp~
// - 野沢 貴也 takaya.nozawa_AT_nao.ac.jp~
// - Ken Chen ken.chen_AT_nao.ac.jp~
// - 井上 剛志
//
//~
//理論コロキウムの前には台内の発表者による[[ショートコロ...
** Schedule & History [#j2453518]
[[2010年度:http://th.nao.ac.jp/seminar/colloquium/2010/]]
[[2011年度:http://th.nao.ac.jp/seminar/colloquium/2011/in...
[[2012年度:http://th.nao.ac.jp/seminar/colloquium/2012/]]
[[2013年度:http://th.nao.ac.jp/seminar/colloquium/2013/]]
[[2014年度:http://th.nao.ac.jp/seminar/?Colloquium2014]]
|BGCOLOR(#ccf):|BGCOLOR(#ffc):|BGCOLOR(#cff):|BGCOLOR(#fc...
|日程|発表者|タイトル|場所/時間|備考|h
|BGCOLOR(#ddf):|BGCOLOR(#ffd):|BGCOLOR(#dff):|BGCOLOR(#fd...
|[[4/1>#long0401]]|Rolf Kuiper (Univ of Tubingen)|[[Proto...
|[[4/13>#long0413]]|Dimitris Stamatellos (Univ of Central...
|[[4/15>#long0415]]|白崎正人 (理論部)|[[遠方銀河撮像観測...
|[[4/22>#long0422]]|道越秀吾 (理論部)|[[土星の環の自己重...
|[[5/13>#long0513]]|（お休み）|ショートコロキウムを２つ予...
|[[5/20>#long0520]]|福島登志夫 (情報センター)|[[Precise a...
|[[5/27>#long0520]]|塚本裕介 (理研)|[[星周円盤形成と進化...
|[[6/03>#long0603]]|（お休み）|[[第3回DTAシンポジウム:htt...
|[[6/10>#long0610a]]|Hsi-An Pan (北大)|[[What is a Giant ...
|[[6/10>#long0610b]]|Alexander Pettitt (北大)|[[Armed and...
|[[6/17>#long0617a]]|Lukasz Stawarz (ISAS)|[[Particle Acc...
|[[6/17>#long0617b]]|紀 基樹 (KASI)|[[On the origin of bl...
|[[6/24>#long0624]]|（お休み）|宇宙核物理シンポジウム開催...
|[[7/01>#long0701]]|（お休み）| [[Star Formation Workshop...
|[[7/08>#long0708]]|田中 秀和（北大）|[[惑星の種、微惑星...
|[[7/15>#long0715]]|簑島 敬（JAMSTEC） |[[ブラソフシミュ...
|[[7/22>#long0722]]|長谷川 靖紘（理論部） |[[Planet Form...
||||||
||||||
|[[10/01>#long1001]]|Yutaka Komiya (Univ. of Tokyo)|[[Che...
|[[10/07>#long1007]]|Aleksander Sadowski (MIT)|[[How not ...
|[[10/14>#long1014a]]|Ken Wong（理論部）|[[Strong Gravita...
|[[10/14>#long1014b]]|Ken Chen（理論部）|[[The Cosmic Daw...
|[[10/21>#long1021]]|Hirotomo Noda (RISE project, NAOJ) |...
|[[10/28>#long1028]]| （お休み）|（理論天文学研究会のため...
|[[11/04>#long1104]]|Yasunori Hori (NAOJ)|[[How Does a Co...
|[[11/11>#long1111]]|（お休み）|固武さん集中講義のため|||
|[[11/18>#long1118]]|Kazem Ardaneh (U of Tsukuba) |[[Co...
|[[11/25>#long1125]]|Wing Kit Lee (Academia Sinica)|[[Spi...
|[[12/02>#long1202]]|Tjarda, Boekholt (Leiden U) |[[Chaos...
|[[12/09>#long1209]]|Shingo Hirano (Univ. of Tokyo)|[[Wid...
|[[12/16>#long1216b]]|Lucie Jilkova (Leiden Observatory)|...
|[[12/17>#long1217]]|Thiem Hoang (CITA)|[[Polarization of...
|[[1/13>#long0113]]|Alex Lazarian (U Wisconsin - Madison)...
|[[1/20>#long0120]]|Ronin Wu (Univ. of Tokyo)|[[Spatially...
|[[1/27>#long0127]]|(no talk)|(CfCA user's meeting)|||
|[[2/03>#long0203]]|磯江麻里(Mari Isoe)|[[Exoplanetary Sy...
|[[2/10>#long0210]]|Toshio FUKUSHIMA (NAOJ)|[[Rotation cu...
|[[2/17>#long0217]]| Nobumitsu Yokoi (Univ. of Tokyo) |...
|[[3/02>#long0302]]|Yichen Zhang(Chile/Yale)|[[Star Forma...
** Confirmed speakers [#hfb505be]
-住 貴宏さん（大阪大）
-橘 省吾さん（北大）
-高本 亮さん（東京大）
** Abstract [#id139640]
:&aname(long0401){4/1}; Rolf Kuiper (Univ of Tubingen, Ge...
During their formation and early evolution, massive proto...
We have performed radiation hydrodynamic simulations of t...
Initially, protostellar outflows lower the accretion rate...
Furthermore, I can report on preliminary results of our i...
:&aname(long0413){4/13}; Dimitris Stamatellos (Univ of Ce...
Gravitational torques between the planet and its host dis...
:&aname(long0415){4/15}; 白崎正人 (理論部) 遠方銀河撮像...
様々な大規模天文観測が示唆する標準的な宇宙模型では、現在...
本発表では、暗黒物質の素粒子的な性質の一つである「対消...
我々は、世界で初めて実際の観測データを用いて、弱重力レ...
:&aname(long0422){4/22}; 道越秀吾 (理論部) 土星の環の自...
土星の環には自己重力ウェイク構造とよばれる微細な渦状腕構...
:&aname(long0520){5/20}; 福島登志夫 (情報センター) Precis...
The generalized Fermi-Dirac integral, $F_k(\eta,\beta)$, ...
by a group of polynomials of $\beta$ as $F_k(\eta,\beta) ...
\sum_{j=0}^J g_j \beta^j F_{k+j} (\eta)$ where $J=1(1)10$...
$F_k(\eta)$ is the Fermi-Dirac integral of order $k$ whil...
the numerical coefficients of the single and double preci...
polynomial approximations of the generalization factor as...
\approx \sum_{j=0}^J g_j x^j$. If $\beta$ is not so large...
combination of these approximations computes $F_k(\eta,\b...
when $\eta$ is too small to apply the optimally truncated...
expansion (Fukushima, 2014, Appl. Math. Comp., 234, 417)....
a degree 8 single precision polynomial approximation guar...
accuracy of $F_k(\eta,\beta)$ of the orders, $k=-1/2(1)5/...
$-\infty < \eta \le 8.92$ and $\beta \le 0.2113$. Also, a...
precision polynomial approximation assures the 15 digit a...
$F_k(\eta,\beta)$ of the same orders when $-\infty < \eta...
and $0 \le \beta \le 3.999 \times 10^{-3}$. Thanks to the...
minimax rational approximations of $F_k(\eta)$ (Fukushima...
Math. Comp., 259, 708), the averaged CPU time of the new ...
only 0.9--1.4 times that of the evaluation of the integra...
$F_k(\eta,\beta)$. Since most of $F_k(\eta)$ are commonly...
the approximation of $F_k(\eta,\beta)$ of multiple contig...
the simultaneous computation of $F_k(\eta,\beta)$ of thes...
further accelerated by the factor 2--4. As a result, the ...
runs 70-450 times faster than the direct numerical integr...
practical applications requiring $F_k(\eta, \beta)$.
:&aname(long0527){5/27}; 塚本 裕介 (理化学研究所) 星周円...
本講演では２つの話題について発表する。
前半では円盤形成におけるホール効果の影響について報告す...
講演者は3つの非理想効果と輻射輸送を考慮した3Dシミュレー...
後半では、自己重力的な円盤の構造についての輻射流体力学...
以上の話題の他に、時間が許せば自己重力不安定による円盤...
:&aname(long0610a){6/10}; Hsi-An Pan (北大) What is a Gi...
Observations and simulations have now reached the point w...
In this research we generated PPV and PPP data for a high...
:&aname(long0610b){6/10}; Alexander Pettitt (北大) Armed ...
The nature of the spiral structure of disc galaxies is st...
:&aname(long0617a){6/17}; Lukasz Stawarz (ISAS / Jagiello...
Strong shocks induced in the interstellar medium by super...
:&aname(long0617b){6/17}; 紀 基樹 (KASI) On the origin o...
Understanding formation mechanism of relativistic jets in...
in the vicinity of the central black holes which ultimate...
The AGN jet Messier 87 (hereafter M87) is one of the clos...
of relativistic jets and it is well known as the best sou...
Here I show highlights of VLBI observations of innermost ...
:&aname(long0708){7/8}; 田中 秀和（北大）惑星の種、微惑星...
惑星形成の標準的理論では、原始惑星系円盤内でまず微惑星と...
:&aname(long0715){7/15}; 簑島 敬（JAMSTEC）ブラソフシミ...
無衝突プラズマや重力多体系の支配方程式は、無衝突ボルツマ...
:&aname(long0722){7/22}; 長谷川 靖紘（理論部）Planet Form...
Planet formation is one of the most ubiquitous processes ...
planet formation to origins of the Solar system. In this ...
:&aname(long1001){10/1}; Yutaka Komiya（Univ. of Tokyo）C...
The main astronomical source of the r-process element has...
Recently, however, Tsujimoto & Shigeyama (2014) pointed o...
:&aname(long1007){10/7}; Aleksander Sadowski（MIT）How no...
In this talk I will summarize the recent progress in simu...
black hole accretion disks applicable to ultra luminous X...
:&aname(long1014a){10/14}; Ken Wong (DTA）Strong Gravitat...
Strong gravitational lensing is a useful probe for studyi...
:&aname(long1014b){10/14}; Ken Chen (DTA）The Cosmic Dawn...
One of the paramount problems in modern cosmology is to e...
:&aname(long1021){10/21}; Hirotomo Noda (RISE project, NA...
I will review science outputs and hardware basics of the ...
altimeters for lunar and planetary sciences which I have ...
The laser altimeters aboard Kaguya, Hayabusa2 and JUICE w...
:&aname(long1104){11/4}; Yasunori Hori (ABC, NAOJ) How Do...
The Kepler mission has revealed the prevalence of volatil...
:&aname(long1118){11/18}; Kazem Ardaneh (U of Tsukuba) Co...
A study of collisionless external shocks in gamma-ray bur...
:&aname(long1125){11/25}; Wing-Kit Lee (Academia Sinica) ...
I will review some mechanisms for generating spiral struc...
:&aname(long1202){12/2}; Tjarda, Boekholt (Leiden U) Chao...
N-body simulations are used to study the dynamical evolut...
:&aname(long1209){12/09}; Shingo Hirano (Univ. of Tokyo) ...
Primordial stars, so-called Population III stars, play vi...
:&aname(long1216){12/16}; Lucie Jilkova (Leiden Observato...
Stars are born in clustered environment and planetary sys...
of this process for the Solar system.
:&aname(long1217){12/17}; Thiem Hoang (CITA) Polarization...
Anomalous microwave emission (AME) in the 10-60 GHz frequ...
:&aname(long0113){1/13}; Alexandre Lazarian (U. Wisconsin...
Turbulent reconnection entails violation of flux freezing...
star formation was based on flux freezing and ambipolar d...
:&aname(long0120){1/20}; Ronin Wu (Univ. of Tokyo) Spati...
Since the launch of the Herschel Space Observatory (Pilbr...
Based on the spatially resolved physical parameters deriv...
molecular gas.
:&aname(long0203){2/3}; 磯江 麻里 (DTA/Univ. of Tokyo) Ex...
2015年11月までに視線速度観測法とトランジット法で観測され...
その結果、KS検定により、大質量惑星系と小質量惑星系の軌道...
:&aname(long0210){2/10}; Toshio FUKUSHIMA (NAOJ) Rotation...
We developed a numerical method to compute the gravitatio...
of an infinitely-thin axisymmetric disc with an arbitrary...
surface mass density. We evaluate the gravitational poten...
quadrature using the double exponential rule and obtain t...
vector by numerically differentiating the potential by Ri...
The new method is of around 12 digit accuracy and suffici...
because requiring only one-dimensional integration. By us...
method, we show the rotation curve of some non-trivial di...
(i) truncated power-law discs, (ii) discs with a non-negl...
(iii) truncated Mestel discs with edge-softening, (iv) do...
discs,
(v) exponentially-damped power-law discs, and (vi) an exp...
with a sinusoidal modulation of the density profile. Also...
a couple of model fittings to the observed rotation curve...
(i) the standard deconvolution by assuming a spherical di...
the dark matter and (ii) a direct fit of infinitely-thin ...
a double power-law distribution of the surface mass densi...
the number of free parameters is a little larger, the lat...
provides a significantly better fit. The determined profi...
mass density of the disc is significantly larger than tho...
stars and gas. This hints a disc-like distribution of the...
:&aname(long0217){2/17}; Nobumitsu Yokoi (Institute of In...
With accompanied by large-scale inhomogeneous fields, suc...
References: (1) http://arxiv.org/abs/1511.08983 (2) http:...
:&aname(long0302){3/2}; Yichen Zhang(Chile/Yale) Star For...
One of the major question in star formation is whether hi...
My talk will be around three aspects of this question. Fi...
// ←ダブルスラッシュはコメントアウト
//:&aname(long0514){5/14}; 名前 タイトル|
//アブスト
//:&aname(long0521){5/21}; 名前 タイトル|
//アブスト
終了行:
[[Colloquium]]
#norelated
* 理論コロキウム2015 [#z407468f]
// 理論コロキウムは原則として毎週水曜日の午後14:10から開...
// 原則として英語で講演していただきますが、
// 講師・参加者が日本人だけの場合は日本語に切り替えてくだ...
// 台内・台外また分野を問わず広く発表者（台外の方には旅費...
//お問い合わせは以下のコロキウム係までお願いします（_AT_...
//
// - 銭谷 誠司 seiji.zenitani_AT_nao.ac.jp~
// - 野沢 貴也 takaya.nozawa_AT_nao.ac.jp~
// - Ken Chen ken.chen_AT_nao.ac.jp~
// - 井上 剛志
//
//~
//理論コロキウムの前には台内の発表者による[[ショートコロ...
** Schedule & History [#j2453518]
[[2010年度:http://th.nao.ac.jp/seminar/colloquium/2010/]]
[[2011年度:http://th.nao.ac.jp/seminar/colloquium/2011/in...
[[2012年度:http://th.nao.ac.jp/seminar/colloquium/2012/]]
[[2013年度:http://th.nao.ac.jp/seminar/colloquium/2013/]]
[[2014年度:http://th.nao.ac.jp/seminar/?Colloquium2014]]
|BGCOLOR(#ccf):|BGCOLOR(#ffc):|BGCOLOR(#cff):|BGCOLOR(#fc...
|日程|発表者|タイトル|場所/時間|備考|h
|BGCOLOR(#ddf):|BGCOLOR(#ffd):|BGCOLOR(#dff):|BGCOLOR(#fd...
|[[4/1>#long0401]]|Rolf Kuiper (Univ of Tubingen)|[[Proto...
|[[4/13>#long0413]]|Dimitris Stamatellos (Univ of Central...
|[[4/15>#long0415]]|白崎正人 (理論部)|[[遠方銀河撮像観測...
|[[4/22>#long0422]]|道越秀吾 (理論部)|[[土星の環の自己重...
|[[5/13>#long0513]]|（お休み）|ショートコロキウムを２つ予...
|[[5/20>#long0520]]|福島登志夫 (情報センター)|[[Precise a...
|[[5/27>#long0520]]|塚本裕介 (理研)|[[星周円盤形成と進化...
|[[6/03>#long0603]]|（お休み）|[[第3回DTAシンポジウム:htt...
|[[6/10>#long0610a]]|Hsi-An Pan (北大)|[[What is a Giant ...
|[[6/10>#long0610b]]|Alexander Pettitt (北大)|[[Armed and...
|[[6/17>#long0617a]]|Lukasz Stawarz (ISAS)|[[Particle Acc...
|[[6/17>#long0617b]]|紀 基樹 (KASI)|[[On the origin of bl...
|[[6/24>#long0624]]|（お休み）|宇宙核物理シンポジウム開催...
|[[7/01>#long0701]]|（お休み）| [[Star Formation Workshop...
|[[7/08>#long0708]]|田中 秀和（北大）|[[惑星の種、微惑星...
|[[7/15>#long0715]]|簑島 敬（JAMSTEC） |[[ブラソフシミュ...
|[[7/22>#long0722]]|長谷川 靖紘（理論部） |[[Planet Form...
||||||
||||||
|[[10/01>#long1001]]|Yutaka Komiya (Univ. of Tokyo)|[[Che...
|[[10/07>#long1007]]|Aleksander Sadowski (MIT)|[[How not ...
|[[10/14>#long1014a]]|Ken Wong（理論部）|[[Strong Gravita...
|[[10/14>#long1014b]]|Ken Chen（理論部）|[[The Cosmic Daw...
|[[10/21>#long1021]]|Hirotomo Noda (RISE project, NAOJ) |...
|[[10/28>#long1028]]| （お休み）|（理論天文学研究会のため...
|[[11/04>#long1104]]|Yasunori Hori (NAOJ)|[[How Does a Co...
|[[11/11>#long1111]]|（お休み）|固武さん集中講義のため|||
|[[11/18>#long1118]]|Kazem Ardaneh (U of Tsukuba) |[[Co...
|[[11/25>#long1125]]|Wing Kit Lee (Academia Sinica)|[[Spi...
|[[12/02>#long1202]]|Tjarda, Boekholt (Leiden U) |[[Chaos...
|[[12/09>#long1209]]|Shingo Hirano (Univ. of Tokyo)|[[Wid...
|[[12/16>#long1216b]]|Lucie Jilkova (Leiden Observatory)|...
|[[12/17>#long1217]]|Thiem Hoang (CITA)|[[Polarization of...
|[[1/13>#long0113]]|Alex Lazarian (U Wisconsin - Madison)...
|[[1/20>#long0120]]|Ronin Wu (Univ. of Tokyo)|[[Spatially...
|[[1/27>#long0127]]|(no talk)|(CfCA user's meeting)|||
|[[2/03>#long0203]]|磯江麻里(Mari Isoe)|[[Exoplanetary Sy...
|[[2/10>#long0210]]|Toshio FUKUSHIMA (NAOJ)|[[Rotation cu...
|[[2/17>#long0217]]| Nobumitsu Yokoi (Univ. of Tokyo) |...
|[[3/02>#long0302]]|Yichen Zhang(Chile/Yale)|[[Star Forma...
** Confirmed speakers [#hfb505be]
-住 貴宏さん（大阪大）
-橘 省吾さん（北大）
-高本 亮さん（東京大）
** Abstract [#id139640]
:&aname(long0401){4/1}; Rolf Kuiper (Univ of Tubingen, Ge...
During their formation and early evolution, massive proto...
We have performed radiation hydrodynamic simulations of t...
Initially, protostellar outflows lower the accretion rate...
Furthermore, I can report on preliminary results of our i...
:&aname(long0413){4/13}; Dimitris Stamatellos (Univ of Ce...
Gravitational torques between the planet and its host dis...
:&aname(long0415){4/15}; 白崎正人 (理論部) 遠方銀河撮像...
様々な大規模天文観測が示唆する標準的な宇宙模型では、現在...
本発表では、暗黒物質の素粒子的な性質の一つである「対消...
我々は、世界で初めて実際の観測データを用いて、弱重力レ...
:&aname(long0422){4/22}; 道越秀吾 (理論部) 土星の環の自...
土星の環には自己重力ウェイク構造とよばれる微細な渦状腕構...
:&aname(long0520){5/20}; 福島登志夫 (情報センター) Precis...
The generalized Fermi-Dirac integral, $F_k(\eta,\beta)$, ...
by a group of polynomials of $\beta$ as $F_k(\eta,\beta) ...
\sum_{j=0}^J g_j \beta^j F_{k+j} (\eta)$ where $J=1(1)10$...
$F_k(\eta)$ is the Fermi-Dirac integral of order $k$ whil...
the numerical coefficients of the single and double preci...
polynomial approximations of the generalization factor as...
\approx \sum_{j=0}^J g_j x^j$. If $\beta$ is not so large...
combination of these approximations computes $F_k(\eta,\b...
when $\eta$ is too small to apply the optimally truncated...
expansion (Fukushima, 2014, Appl. Math. Comp., 234, 417)....
a degree 8 single precision polynomial approximation guar...
accuracy of $F_k(\eta,\beta)$ of the orders, $k=-1/2(1)5/...
$-\infty < \eta \le 8.92$ and $\beta \le 0.2113$. Also, a...
precision polynomial approximation assures the 15 digit a...
$F_k(\eta,\beta)$ of the same orders when $-\infty < \eta...
and $0 \le \beta \le 3.999 \times 10^{-3}$. Thanks to the...
minimax rational approximations of $F_k(\eta)$ (Fukushima...
Math. Comp., 259, 708), the averaged CPU time of the new ...
only 0.9--1.4 times that of the evaluation of the integra...
$F_k(\eta,\beta)$. Since most of $F_k(\eta)$ are commonly...
the approximation of $F_k(\eta,\beta)$ of multiple contig...
the simultaneous computation of $F_k(\eta,\beta)$ of thes...
further accelerated by the factor 2--4. As a result, the ...
runs 70-450 times faster than the direct numerical integr...
practical applications requiring $F_k(\eta, \beta)$.
:&aname(long0527){5/27}; 塚本 裕介 (理化学研究所) 星周円...
本講演では２つの話題について発表する。
前半では円盤形成におけるホール効果の影響について報告す...
講演者は3つの非理想効果と輻射輸送を考慮した3Dシミュレー...
後半では、自己重力的な円盤の構造についての輻射流体力学...
以上の話題の他に、時間が許せば自己重力不安定による円盤...
:&aname(long0610a){6/10}; Hsi-An Pan (北大) What is a Gi...
Observations and simulations have now reached the point w...
In this research we generated PPV and PPP data for a high...
:&aname(long0610b){6/10}; Alexander Pettitt (北大) Armed ...
The nature of the spiral structure of disc galaxies is st...
:&aname(long0617a){6/17}; Lukasz Stawarz (ISAS / Jagiello...
Strong shocks induced in the interstellar medium by super...
:&aname(long0617b){6/17}; 紀 基樹 (KASI) On the origin o...
Understanding formation mechanism of relativistic jets in...
in the vicinity of the central black holes which ultimate...
The AGN jet Messier 87 (hereafter M87) is one of the clos...
of relativistic jets and it is well known as the best sou...
Here I show highlights of VLBI observations of innermost ...
:&aname(long0708){7/8}; 田中 秀和（北大）惑星の種、微惑星...
惑星形成の標準的理論では、原始惑星系円盤内でまず微惑星と...
:&aname(long0715){7/15}; 簑島 敬（JAMSTEC）ブラソフシミ...
無衝突プラズマや重力多体系の支配方程式は、無衝突ボルツマ...
:&aname(long0722){7/22}; 長谷川 靖紘（理論部）Planet Form...
Planet formation is one of the most ubiquitous processes ...
planet formation to origins of the Solar system. In this ...
:&aname(long1001){10/1}; Yutaka Komiya（Univ. of Tokyo）C...
The main astronomical source of the r-process element has...
Recently, however, Tsujimoto & Shigeyama (2014) pointed o...
:&aname(long1007){10/7}; Aleksander Sadowski（MIT）How no...
In this talk I will summarize the recent progress in simu...
black hole accretion disks applicable to ultra luminous X...
:&aname(long1014a){10/14}; Ken Wong (DTA）Strong Gravitat...
Strong gravitational lensing is a useful probe for studyi...
:&aname(long1014b){10/14}; Ken Chen (DTA）The Cosmic Dawn...
One of the paramount problems in modern cosmology is to e...
:&aname(long1021){10/21}; Hirotomo Noda (RISE project, NA...
I will review science outputs and hardware basics of the ...
altimeters for lunar and planetary sciences which I have ...
The laser altimeters aboard Kaguya, Hayabusa2 and JUICE w...
:&aname(long1104){11/4}; Yasunori Hori (ABC, NAOJ) How Do...
The Kepler mission has revealed the prevalence of volatil...
:&aname(long1118){11/18}; Kazem Ardaneh (U of Tsukuba) Co...
A study of collisionless external shocks in gamma-ray bur...
:&aname(long1125){11/25}; Wing-Kit Lee (Academia Sinica) ...
I will review some mechanisms for generating spiral struc...
:&aname(long1202){12/2}; Tjarda, Boekholt (Leiden U) Chao...
N-body simulations are used to study the dynamical evolut...
:&aname(long1209){12/09}; Shingo Hirano (Univ. of Tokyo) ...
Primordial stars, so-called Population III stars, play vi...
:&aname(long1216){12/16}; Lucie Jilkova (Leiden Observato...
Stars are born in clustered environment and planetary sys...
of this process for the Solar system.
:&aname(long1217){12/17}; Thiem Hoang (CITA) Polarization...
Anomalous microwave emission (AME) in the 10-60 GHz frequ...
:&aname(long0113){1/13}; Alexandre Lazarian (U. Wisconsin...
Turbulent reconnection entails violation of flux freezing...
star formation was based on flux freezing and ambipolar d...
:&aname(long0120){1/20}; Ronin Wu (Univ. of Tokyo) Spati...
Since the launch of the Herschel Space Observatory (Pilbr...
Based on the spatially resolved physical parameters deriv...
molecular gas.
:&aname(long0203){2/3}; 磯江 麻里 (DTA/Univ. of Tokyo) Ex...
2015年11月までに視線速度観測法とトランジット法で観測され...
その結果、KS検定により、大質量惑星系と小質量惑星系の軌道...
:&aname(long0210){2/10}; Toshio FUKUSHIMA (NAOJ) Rotation...
We developed a numerical method to compute the gravitatio...
of an infinitely-thin axisymmetric disc with an arbitrary...
surface mass density. We evaluate the gravitational poten...
quadrature using the double exponential rule and obtain t...
vector by numerically differentiating the potential by Ri...
The new method is of around 12 digit accuracy and suffici...
because requiring only one-dimensional integration. By us...
method, we show the rotation curve of some non-trivial di...
(i) truncated power-law discs, (ii) discs with a non-negl...
(iii) truncated Mestel discs with edge-softening, (iv) do...
discs,
(v) exponentially-damped power-law discs, and (vi) an exp...
with a sinusoidal modulation of the density profile. Also...
a couple of model fittings to the observed rotation curve...
(i) the standard deconvolution by assuming a spherical di...
the dark matter and (ii) a direct fit of infinitely-thin ...
a double power-law distribution of the surface mass densi...
the number of free parameters is a little larger, the lat...
provides a significantly better fit. The determined profi...
mass density of the disc is significantly larger than tho...
stars and gas. This hints a disc-like distribution of the...
:&aname(long0217){2/17}; Nobumitsu Yokoi (Institute of In...
With accompanied by large-scale inhomogeneous fields, suc...
References: (1) http://arxiv.org/abs/1511.08983 (2) http:...
:&aname(long0302){3/2}; Yichen Zhang(Chile/Yale) Star For...
One of the major question in star formation is whether hi...
My talk will be around three aspects of this question. Fi...
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