水曜雑誌会 (Wednesday Seminar)

English version is here

水曜雑誌会は、恒星物理や太陽・プラズマ物理に関する論文、自身の研究等を紹介しあうセミナーです。

schedule

seminar in 2012b

後期の雑誌会の発表内容と予定です。

日付発表者(予定)題名・発表内容
10 月 3 日本田 「リチウムの問題とフレア星」、として現在問題になっている 低金属星でのリチウム組成がBigBang元素合成モデルと一致しない問題と、 フレア星の観測でリチウムが検出された(?)という論文を紹介するつもりです。
「Li problem and flare stars」
I'm going to talk about "Li problem" and detections of Li line in flare stars.
Reference:
Li I enhancement during a long-duration stellar flare
Montes & Ramsey 1998 A&A letter
など
10 月 10 日志達 In the next Wednesday I would like to introduce the following paper:
"The Truncated Disk from Suzaku Data of GX 339-4 in the Extreme Very High State" (Tamura et al. 2012, ApJ, 753, 65).

来週の雑誌会では、
"The Truncated Disk from Suzaku Data of GX 339-4 in the Extreme Very High State"
Tamura et al. 2012, ApJ, 753, 65
を紹介する予定です。アウトバースト中の高光度の状態のブラックホール X 線連星に対する最新の解析結果です。
10 月 17 日大久保 Exploring the α-enhancement of metal-poor planet-hosting stars. The Keplar + Harps samples (Resaech Note)
です。地球型惑星を持つ星は金属量がそれほど多くない星で見つかり、 α元素に汚染されている。
という内容です。
10 月 24 日廣井 I would like to review the following paper:
"The high-redshift (z>3) AGN population in the 4 Ms Chandra Deep Field South" by Vito et al."
Vito, F., Vignali, C., Gilli, R., et al. 2012, arXiv:1209.4193.

It reports the cosmological evolution of AGNs (space density, obscured fraction) on the basis of the Chandra Deep Field South (CDFS) survey.
10 月 31 日休会
恒星のスーパーフレアに関するワークショップ

11 月 7 日田崎 I will report our study of radio-loud AGNs with X-ray observations in the next seminar. This is "mid-term report" for PhD. Sorry for the talk in Japanese.

Title: X-Ray Study of Nuclear Structure of Radio-Loud Active Galactic Nuclei
11 月 14 日Zemko


11 月 21 日野上 The title of my talk at the next Wednesday seminar on Nov. 21 is:
On the Evolution of Cataclysmic Variable Stars
I will first review the standard scenario of CVs, and introduce some recent researches challenging this.
11 月 28 日長尾 In the next seminar (28th Nov.), I would present our recent achievements and activities on the galaxy chemical evolution.
title: FIR-submm metallicity diagnostcs with fine-structure emission lines
references:
Maiolino, Nagao, Grazian, Cocchia, et al. A&A, 488, 463 (2008) “The evolution of the mass-metallicity relation at z>3”
Nagao, Maiolino, Marconi, and Matsuhara, A&A, 526, A149 (2011) “Metallicity diagnostics with infrared fine-structure lines”
Nagao, Maiolino, De Breuck, Caseli, et al. A&A, 542, L34 (2012) “ALMA reveals a chemically evolved SMG at z=4.76”
12 月 5 日池田 In the next seminar (5th Dec.), I would like to introduce the following paper: "The Small-Scale Environment of Quasars"
Serber et al., 2006, ApJ, 643, 68
12 月 12 日佐藤 In the next seminar (12th Dec.), I would like to talk about the power spectrum density (PSD) of AGN. PSD analysis is major method to investigate the variability of AGN. I will introduce a review paper and recent researches.
reference:
Gonzalez-Martin & Vaughan, 2012, A&A, 544, 80
"X-ray variability of 104 active galactic nuclei. XMM-Newton power-spectrum density profiles"
McHardy, I., 2010, Lecture Notes in Physics, Berlin Springer Verlag, 794, 203
"X-Ray Variability of AGN and Relationship to Galactic Black Hole Binary Systems"
12 月 19 日山中 In the next seminar (19th Dec.), I would like to introduce the observational study of peculiar SNe Ia. This class is known to deviate from the width-luminosity relation of Type Ia SNe.

I first introduce the following paper:
"TYPE Iax SUPERNOVAE: A NEW CLASS OF STELLAR EXPLOSION"
Foley et al., 2012, ArXiv e-prints, 1212.2209v1

Then, I may report the our observational results of another object observed by OISTER.
1 月 9 日上田 The title of my tomorrow's talk will be:

Highlights from the torus workshop 2012

I will mainly introduce results on infrared interferometory of AGN tori.
1 月 16 日大島 明日は、Otulakowska-Hypka et al.の"IX Draconis - a curious ER UMa-type dwarf nova"をベースに、近年のER UMa型矮新星の動向について話す予定です。
1 月 23 日休会
集中講義 (名古屋大 金田氏)

1 月 30 日林田 The title of my talk in this Wednesday will be:
``Gamma-ray emission from galaxies''
The talk will be based on
-Ackermann et al.(2012), ApJ, 755, 164 "GeV Observations of Star-forming Galaxies with the Fermi Large Area Telescope"
-Ackermann et al.(2012), ApJ, 747, 104 "Search for Gamma-ray Emission from X-Ray-selected Seyfert Galaxies with Fermi-LAT"
Also, I will include some general introductions of the cosmic-ray and gamma-ray physics.
2 月 6 日Ricci The title of my talk this Wednesday will be:

"Probing the evolution of Active Galactic Nuclei using the Iron Kalpha" line

I will first review the recent developments in our understanding of the unification of Active Galactic Nuclei (AGN), and then present you some recent work I have been doing on this subject. My talk will be mostly based on recent X-ray and IR studies of AGN, with a particular attention to the features generated by reflection of the X-ray emission by circumnuclear material, and to their evolution. I will also shortly discuss how much the advent of the new generation X-ray telescope ASTRO-H will improve our understanding of AGN.

Some of the papers I will present you on this fascinating subject are

Shu et al. (2010)
http://adsabs.harvard.edu/abs/2010ApJS..187..581S

Shu et al. (2011)
http://adsabs.harvard.edu/abs/2011ApJ...738..147S

Shu et al. (2012)
http://adsabs.harvard.edu/abs/2012ApJ...744L..21S

Burlon et al. (2011)
http://adsabs.harvard.edu/abs/2011ApJ...728…58B

Elitzur (2012)
http://adsabs.harvard.edu/abs/2012ApJ...747L..33E
2 月 13 日休会
GCOE シンポジウム

2 月 20 日川室 I would like to reports our work and review the following paper: "FITTING LINER NUCLEI WITHIN AGN FAMILY: A MATTER OF OBSCURATION ?" The Astrophysical Journal, Volume 704, Issue 2, pp. 1570-1585 (2009).
This paper reports the studies of the nuclear obscuration in LINERs and the raletion between the LINERs and the other types of AGN.
2 月 27 日笹田 I will talk about an analysis of time variation of a blazar. A title of my presentation is
"Time Variability Analysis of Blazars".

My presentation is based on these papers;
"GAMMA-RAY LIGHT CURVES AND VARIABILITY OF BRIGHTFERMI-DETECTED BLAZARS"
Abdo et al. (2010); ApJ 722, 520
"Long-term variability of the low-luminosity active galactic nucleus of M81"
Iyomoto et al. (2001); MNRAS 321, 767, etc.

過去の雑誌会の内容はこちらに。
2012 年度前期
2011 年度前期
2011 年度後期
2010 年度前期
2010 年度後期

member

10/3〜のローテーションは以下の様になっております (敬称略)。
本田、志達、大久保、廣井、田崎、野上、長尾、池田、佐藤、山中、上田、大島、林田、Ricci、川室、笹田、市川

水曜雑誌会では発表メンバーを切に募集しています!


2012 年度世話人: 志達