EVN/JIVE
updateand theGlobal
VLBI
Alliance

Paco Colomer@jivedirector

European VLBI Network
http://www.evlbi.org/• Up to 22 radio telescopes, worldwide• Including KVN and some CVN (Sh,Ur,Km)• Operating from 1.4 GHz to 45 GHz• Disk recording at 2 Gbps
• Real-time (eEVN) at 1-2 Gbps.
• 3 sessions per year of ~3 weeks
duration + 10 e-VLBI days + OoS• The Joint Institute for VLBI ERIC(JIVE) correlates the EVN data andprovides expert support to EVNusers.
• SXFC data processor
Westerbork 14x15m(the Netherlands)

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 2019

Effelsberg 100m(Germany)

Jodrell Bank 76m
Tianma 65m (China)(UK)

Yebes 40m(Spain)

Sardinia 64m (Italy)2European VLBI Network• EVN is a research infrastructure• “Open Sky” policy to any astronomer,
based on proposal merit and technicalfeasibility.
• Proposal submission by NorthStar• Call for proposals to EVN: deadlines onFeb/June/Oct 1st• JIVE provides support to proposers !

• Proposals active for 1 year, data
proprietary for 1 year.
https://www.jive.eu/proposals
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20193

EVN + e-MERLIN• High sensitivity, excellent uv-coverage !
• Also in real time !

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20194

e-EVN (European VLBI Network - in real time)• >10 telescopes in 4 continents• 1-2 Gbps per telescope• Recent record of total 24+ Gbps

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20195

Enhancing EVN frequency coverage• Move to larger instantaneous bandwidths (and rates up to 32 Gbps/tel)• Develop a broadband receiver to cover 1.5-15.5 GHz (prototype “BRAND EVN”
by H2020 Radionet) – able to also observe many spectral lines simultaneously).
• Install multi-(high)-frequency capability in some EVN telescopes• 22/43/86 GHz compact receiver from KVN

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20196

Joint Institute for VLBI ERIC (JIVE)• The European Research Infrastructure Consortium (ERIC) for VLBI
• 6 partner countries: NL (host), ES, FR, LV, SE, UK• 4 associated institutions: INAF (IT), NRF (SA), MPIfR (DE), NAOC (Cn)

• Supports the European VLBI Network and users

http://www.jive.eu/• operations• data acquisition• Correlation• data reduction• R&D

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20197

JIVE and the EVN

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20198

Science support, training and outreach at JIVE
Science interaction/conferences (proposalidea)
EVN Status Table
Proposal preparation
Correlation

EVNCalc
OBSERVATIONSFITS ﬁleregular session:schedule checking
Scheduling

DATA: EVN Archive

Data preparation

e-VLBI: schedulepreparation

UVFLAG

metadata
EVN Support

User Support & Training

Pipeline products

Data Reduction Guide

Summer Student
Programme
European RadioInterferometry School

ANTAB

CHFLAGJIVE science
SCIENCE
Science with the EVNEDUCATION &TRAINING

Africa training

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20199R&D at JIVE
• Software (e-VLBI, CASA 5.3)
• Hardware• e-VLBI and sync distribution• Now also GeoVLBI capable

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 201910Updating the EVN Science Vision (2020-)
FRBs

GW
counterparts
TDEs

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 2019

Updating the EVN Science Vision (2020-)
Imaging
gravitational
lensesAstrometry

Orphan gamma-ray burst
afterglow
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 2019

Towards a “Global VLBI Alliance”
VLBA
Very Long Baseline Array

EVN
European VLBI Network

KVN
Korean VLBI Network

FAST(AVN)

EAVN

African VLBI Network

East Asia VLBI NetworkuGMTRLBA(IVIA)

Long Baseline Array

Iniciativa VLBI
Ibero-Americana

SKA1 LOW

Credits: Earth and Moon Viewer
SKA1 MID
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 201913

Towards a “Global VLBI Alliance” (II)• Coordination forum• Technical (TOG, IVTW, etc)
• Governance, (complementary) strategies• Logistics• Align proposal deadlines• Common access point and proposal tools• Global VLBI observations• 22/43/(86) GHz global campaign• User support• Of any user in any network• Scientific cooperation• Facilitate attendance to conferences• Next EVN symposium 2020 in Ireland
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 2019

“A global network of radio telescopes exposes theaftermath of a violent merger of neutron stars”(Guirlanda et al. 2019)

SKA-VLBI• SKA-1 will lack very long baselines,
which are provided by VLBI.
• Performed first VLBI tests with EVN andSKA precursor MeerKAT

https://indico.skatelescope.org/event/539/
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 201915

Conclusions• VLBI, providing the highest angular resolution in astronomy, is in the core ofmajor and new radio astronomy instruments (EVN, EHT, EAVN, SKA, IVS…)• JIVE is the European institute for VLBI and related techniques, central hub of
the European VLBI Network (EVN)• The e-EVN is a pathfinder of SKA; JIVE and partners develop SKA-VLBI,
essential for SKA-1• A Global VLBI Alliance is needed:• to ensure good information flow between networks, coordination of technical developments• and better scientific collaboration and support of users

Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20191616

Contact
support@jive.eu
www.jive.eu@jivevlbi / @jivedirector@JIVERIC

Next EVN proposal
deadline 1 October

http://www.jive.eu/newsletter
Scientific workshop of the East Asian VLBI Network (EAVN). Mito (Japan), 24-26 September 20191717