EAVN 2018 EAVN VLBI - - PowerPoint PPT Presentation

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EAVN 2018 EAVN VLBI - - PowerPoint PPT Presentation

Dec 28, 2023 726 likes •1k views

EAVN 2018 EAVN VLBI Tianma65 NRO45 KaVA Urumqi26 2018B (2018/10 ~ 2019/1), 2019B (2019/1 ~

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SLIDE 1

EAVN2018

  • EAVNVLBI
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SLIDE 2
  • 2018B (2018/10 ~ 2019/1), 2019B (2019/1 ~ 2019/6)
  • 43GHz: KaVA+天馬+野辺山
  • 22GHz: KaVA+天馬+野辺山+ウルムチ (2018BはKaVA+天馬のみ)
  • 1Gbps, 片偏波, KJCC相関
  • KaVA公募時間(250hr/半年)のうち100hrをEAVN枠（野辺山は50hr）

Tianma65 NRO45 KaVA Urumqi26

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SLIDE 3

Table 10: Image sensitivity of EAVN. Array Nant Nbl K-band Q-band KVN 3 3 320 480 VERA 4 6 360 750 KaVA 7 21 155 268 KaVA+TMRT65 8 28 60 85 KaVA+NRO45 8 28 89 169 KaVA+TMRT65+NRO45 9 36 42 65 KaVA+TMRT65+NSRT26 9 36 44 – KaVA+TMRT65+NSRT26+NRO45 10 45 35 – : N and N are the numbers of telescopes and baselines for each arra Table 9: Baseline sensitivity of EAVN. K-band Q-band KVN VERA TM65 NRO45 NS26 KVN VERA TM65 NRO45 KVN 6.1 7.7 1.7 2.8 3.2 9.1 13.6 2.2 5.2 VERA – 9.7 2.1 3.6 4.1 – 20.2 3.2 7.8 TMRT65 – – – 0.8 0.9 – – – 1.2 NRO45 – – – – 1.5 – – – – Note: 1σ baseline sensitivity values are listed in unit of mJy, which assume an inte-

  • mJy. 256MHz, 120sec

microJy/beam. 256MHz, 4

EAVN 2019A

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SLIDE 4

OVBa

  • 2+
  • N
  • +(+Q
  • LKTK
  • RA@ ) +Q
  • .Q )03))08
  • 31:5/) +Q
  • 31:5697/) (Q
  • .1
  • +Q 42141
  • L,K(MK+
  • RA@ ,Q
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SLIDE 5

()/(01

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SLIDE 6

Obs. Code Date UT time Target Freq. KaVA Tianma Urumqi NRO Hitachi Takahagi Medicina (M87)

a18068a 3/9 13:20 – 20:20 M87 K

  • a18069a

3/10 12:15 – 19:15 M87 Q

  • a18085a

3/26 12:45 – 19:45 M87 K

  • a18087a

3/28 11:05 – 18:05 M87 Q

  • a18088a

3/29 17:45 – 23:50 SgrA Q

  • a18100a

4/10 10:45 – 22:45 M87+SgrA K

  • a18101a

4/11 10:40 – 17:40 M87 Q

  • a18110a

4/20 10:35 – 22:35 M87+SgrA K

  • a18111a

4/21 10:00 – 22:00 M87+SgrA Q

  • a18117a

4/27 09:35 – 21:35 M87+SgrA Q

  • a18118a

4/28 10:00 – 22:00 M87+SgrA K

  • a18123a

5/3 09:15 – 21:15 M87+SgrA Q

  • a18124a

5/4 08:10 – 16:10 OJ+CenA Q

  • a18127a

5/7 08:25 – 20:30 M87+SgrA Q

  • a18128a

5/8 08:25 – 20:25 M87+SgrA K

  • a18140a

5/20 14:30 – 20:30 SgrA Q

  • a18141a

5/21 07:40 – 14:40 M87 K

  • a18143a

5/23 02:00 – 22:05 Mrk501+ K

  • EHT 2018

TeV flare M87

2122GHzA8E0

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SLIDE 7
  • 43GHz

VLBA: 10 EVN: Ef, On, Ys, Nt EAVN: KaVA, TM, NY 22GHz VLBA: 10 EVN: Ef, Mc, On, Tr, Nt, Ur, Ys, Hh, Sv, Zc, Bd EAVN: KaVA, TM, UR, NY, HT, TH, KS 6.7GHz VLBA: 10 EVN: Ef, Mc, On, Tr, W1, Nt, Ys, Hh, Ir EAVN: VERA, KUS, TM, KM, HT, TK, KS, YM, US

2Gbps (512MHz BW), 1hr integration

20 40 60 80 100 120 140 160 6.7GHz 22GHz 43GHz Sensitivity (Micro Jy/beam) Frequency band VLBA EVN EAVN HSA

  • EAVN6.7-43GHz
  • => JVNA
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SLIDE 8

VLBI:

  • EAVN
  • VLBA (), EVN (), LBA (), EAVN ()
  • EAVN+Italy (EATING VLBI)
  • EAVNVLBI
  • EAVN
  • VLBA+EAVN @ K/Q? (W. Brisken (VLBA director) @ EVN-

2018 symposium)

  • : SKA, ALMA, EHT, FAST, TMT, multi-

messenger/time domain

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SLIDE 9

Global VLBI

  • High resolution
  • D>10000km, λ/D < 140μas @ 7mm
  • High sensitivity
  • Micro-Jy sources
  • Densely-sampled uv coverage
  • High-DR imaging
  • High position accuracy
  • Astrometry for distant sources
  • Time domain
  • Transient, micro-quasars, SgrA*, 24hr monitor
  • North-south expansion
  • North-south resolution. Explore the southern sky
  • Synergy with SKA, EHT, CTA, TMT, ngVLA, GW, Neutrino
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SLIDE 10

43/22GHz

  • VLBI

EHT@230GHz, GMVA@86GHz

  • 10
  • EHT43/22GHz VLBI
  • 86GHz
  • : 43GHz: Urumqi, ALMA Band-1; 22GHz: , SKA, ngVLA
  • EAVN

Chael et al. 2018

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SLIDE 11

22/43GHz

43GHz 22GHz

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SLIDE 12
  • Common sky (EAVN, EVN, VLBA, LBA)
  • UV coverage: ideal examples
  • UV coverage: practical/realistic examples
  • Quick case study: M87 imaging simulation
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SLIDE 13

ALM ALMA VL VLA GBT GBT VLBA_S _SC VLBA_P _PT VLBA_O _OV VLBA_NL _NL VLBA_M _MK VLBA_L _LA VLBA_K _KP VLBA_HN _HN VLBA_F _FD VLBA_B _BR Mo Mopra AT ATCA Me Metsahovi Yeb Yebes es On Onsala Ef Effelsberg Sa Sardegna na No Noto TNR NRT NR NRO45 Ur Urumqi qi Ti Tian anma6 a65 Se Sejo jong ng KVN_T N_TN KVN_U N_UL KVN_Y N_YS VERA_I _ISG VERA_O _OGA VERA_I _IRK VERA_M _MIZ

DEC = 40deg DEC = 12deg DEC = -30deg

Common sky (43GHz, EL >10)

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SLIDE 14

VL VLA GB GBT VL VLBA_SC VL VLBA_PT VL VLBA_OV VL VLBA_NL VL VLBA_MK VL VLBA_LA VL VLBA_KP KP VL VLBA_HN VL VLBA_FD VL VLBA_BR Cam Cambridge Jo Jodrell Ha Hart To Torun Me Metsahovi Yeb Yebes es On Onsala Ef Effelsberg Sa Sardegna na No Noto Me Medicina Ze Zele lenc nchuk hukskaya Ba Badary Sv Svetlo loe Ti Tidbinbilla Ho Hobart Ced Ceduna Pa Parkes Mo Mopra AT ATCA TN TNRT Ur Urumqi She Shesha han Ti Tian anma6 a65 NR NRO45 Gi Gifu Ka Kashima Ib Ibaraki Se Sejo jong ng KVN KVN_TN KVN KVN_UL KVN KVN_YS VE VERA_IS ISG VE VERA_OGA GA VE VERA_IR IRK VE VERA_MIZ IZ

DEC = 40deg DEC = 12deg DEC = -30deg

Common sky (22GHz, EL >10)

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SLIDE 15

EAVN (KaVA,TM,NRO,UR) VLBA EVN Dec=40d Dec=12d

43GHz

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SLIDE 16

EAVN+EVN EAVN+VLBA EVN+VLBA Dec=40d Dec=12d

43GHz

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SLIDE 17

22GHz

EAVN+EVN EAVN+VLBA EVN+VLBA Dec=40d Dec=12d

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SLIDE 18

Realistic examples (43GHz, Dec 40d)

EATING (operational) EATING w/ UR EATING w/ UR+MK Beam pattern

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SLIDE 19

Realistic examples (22GHz, Dec 40d)

Current EATING (w/ UR) +TNRT +Zelenchksukaya +Badary +Zelenchksukaya +Badary +TNRT

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SLIDE 20

Quick imaging simulation case study

  • M87 (Dec=12d) @ 43GHz
  • 1. Current EATING
  • 2. EATING + UR + MK
  • Model: full-track VLBA 43GHz map
  • Impact on jet base morphology
  • Impact on kinematics (component identification)
  • Impact on counter-jet
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SLIDE 21

UV coverage Amp-distance Dirty map EATING (w/o UR) EATING w/ UR + MK

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SLIDE 22

EATING (w/o UR) EATING w/ UR + MK

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SLIDE 23

EATING (w/o UR) + Mopra EATING w/ UR + MK + Mopra

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SLIDE 24
  • EAVN/EATING+α => ()

component identification()

  • VLBA => (VLBAcommon sky

EAcommon sky)

  • VLBA 1
  • EAVN+MKK/QL/S, C, X,

WEA

  • 22GHz
  • uv
  • common sky ~2 (DEC)
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SLIDE 25
  • EAVN()
  • (22/43GHz)
  • JVLA/VLBA
  • : JVN(6.7GHz, 22GHz)
  • VLBI()
  • 43/22GHz, BH jet
  • EAVN/EATING+α:
  • VLBA/EAVN