1. No category

Status Report on University of Tsukuba
! Makoto NAGAI
(Radio Astronomy Laboratory)
32nd NRO Users Meeting 2014/07/24
*** CORPORATION
Radio Astronomy Laboratory
21 members (2014)
! Professor: NAKAI, KUNO
! Lecturer: SETA
! Research Associate: NAGAI
! Researchers: KANEKO, NAGASAKI, SALAK
! Students: 2 in doctor course, 9 in master course, 3 in
undergrad. 2
*** CORPORATION
Projects
! Tsukuba 32-m Radio Telescope
! Single-dish spectroscopy in 22-GHz band
! Galactic plane survey
! External galaxies
! VLBI observations
! Sgr A* monitoring campaign
! Astronomy in Antarctic
! 30-cm Telescope
! ∼10-m Telescope
3
*** CORPORATION
Tsukuba 32-m Radio Telescope
! Azimuth Rail deformation
(∼5 mm)
! No operation Apr.-Nov. 2013
! Repair Sep.-Nov.
! Detail inspections
! rails, pointing, azimuth motion, etc. ! Pointing residual Before/After
(Fujita, master thesis)
4
*** CORPORATION
Related topics
5
! NGC 5495 (Funahashi, master thesis)
! H2O maser observation with 32-m Telescope ! Using NRO 45 m, VLA data
! Database for 32-m data open use
(Nabekura, master thesis)
! Molecular gas in superwind galaxies M82 and NGC
1808 (Salak, doctor thesis)
Molecular gas in superwind galaxies M82 and NGC 1808 Dragan Salak (doctoral thesis 2014)
NUV
Integrated intensity
Integrated intensity
42:00.0
-37:30:00.0
-37:30:00.0
NUV
STAR-FORMING REG.
S
DUST OUTFLOW
Declination (J2000.0)
30.0
30.0
30.0
31:00.0
31:00.0
DUST OUTFLOW
STARBURST NUCLEUS
STARBURST
41:00.0
30.0
50.0
30.0
30.0
48.0
46.0
44.0
42.05:07:40.0 38.0
36.0
34.0
50.0
48.0
46.0
44.0
BVelocity dispersion
Velocity dispersion
STAR-FORMING REG.
42.05:07:40.0 38.0 36.0
STAR-FORMI
34.0
B
69:40:00.0
beam
500 pc
39:30.0
10.0
1
2
4
05.0
8
14
9:56:00.0
55.0
50.0
45.0
Right ascension (J2000.0)
21
29
40
52
66
55:40.0
81
35.0
97
116
CARMA + NRO 45m CO (J=1-­‐0) imaging of M82 CANON project (in prep.) Angular resoluDon: 2.8” x 2.5” (40-­‐45 pc) 136
15
ASTE CO (J=3-­‐2) imaging of NGC 1808 (Salak et al. accepted to PASJ) DetecDon of 13CO (J=3-­‐2) *** CORPORATION
30-cm Telescope
! Optical pointing in daytime
7
(Kawasaki, master thesis)
! For Antarctic summer ! Employ extenders and filters
! ∼30 bright stars available
! Development of New 2SB receiver
à Poster P31
(Nagasaki, doctor thesis)
*** CORPORATION
南極望遠鏡搭載500GHz帯受信機の開発
南極中心部の高原地帯での運用を考慮したサブミリ波受信機
▷低雑音受信機 (TRX 〜3×量子雑音)
周波数
受信機雑音温度
イメージバンド抑圧比
アラン分散
CO (J = 4-3) @461GHz 66 [K]
17.3 dB
126s
[CI] (3P1 - 3P0) @492GHz
83 [K]
15.7 dB
100s
▷低消費電力 (W < 1.5kW)
-> 小型機械式冷凍機(冷却能力 0.1W @ 4K)を用いて素子温度3.2Kまで冷却
CO
CI
コルゲートホーン
RF ハイブッット
ミクサ
ミクサ
磁場用コイル
4hv/k
増幅器
同位相ケーブル
3hv/k
IF ハイブリット
ISO
アイソレーター
詳細はポスターをご覧ください
*** CORPORATION
Studies on 10-m Telescope
! Optics
9
(Imada, Poster P30)
! Panels of the primary mirror(Onodera, Master thesis) ! Deformation by gravity, temperature variation, temperature gradient, etc.
! Photogrammetry on Primary Mirror
(Tanaka, bachelor thesis)
! Lattice-projection method (no markers needed)
! Heterodyne receivers
(Sugaya, master thesis)
! 3 Cryostats, 6 receiver ports; 2 of them available simultaneously
! Heterodyne receiver room
(Asakura, bachelor thesis)
! Heat from compressors ó room temperature
! Wide-Field mm-wave Camera
(Nitta, doctor thesis, Poster P09)
ミリ波帯MKIDカメラの開発
力学インダクタンス検出器（MKID）：マイクロ波帯で動作する超伝導共振器
・多画素カメラ開発の際に重要になる、周波数多重化読み出しが容易
・超伝導膜一層で構成されるため、高い検出器歩留まりが期待できる
220-GHz帯608画素MKIDカメ
ラ
・検出器歩留まり
約95% （584 / 608）を達成 608画素MKIDアレイの検出器応答
*** CORPORATION
Prospects for Antarctic
! 2016–: 30-cm Telescope in Dome Fuji. ! 2018–: Testing 10-m Telescope @Tsukuba!
! 2020– : Building 10-m Telescope @Antarctic!
!
11