PoS - Proceedings of Science

12th European VLBI Network Symposium and Users Meeting

EVN 2014 - (other evn conferences)
7-10 October 2014
Cagliari, Italy
published May 21, 2015
The Istituto di Radioastronomia (IRA) di Bologna and the Osservatorio Astronomico di Cagliari (OAC), on behalf of the European VLBI Consortium, hosted the 12th European VLBI Network (EVN) Symposium and Users Meeting. The Conference was held from 7th to 10th of October at the Hotel Regina Margherita, in the center of Cagliari. The latest scientific results and technical developments from VLBI, and, in particular, e-VLBI and space-VLBI (RadioAstron) outcomes were reported. The timing of this meeting coincided with the first successful observational tests of the Sardinia Radio Telescopes within the EVN, and with a number of results from new and upgraded radio facilities around the globe, such as e-MERLIN, ALMA, and the SKA pathfinders. The symposium was attended by 133 participants from all over the world, with the Asian community represented by more than 20 colleagues. The program of the meeting consisted of 70 oral contributions (including 8 invited speakers) and 50 poster that covered a very wide range of VLBI topics both in galactic and extragalactic astrophysics (e.g., AGN, stellar evolution from birth to death, astrometry, and planetary science) as well as technological developments and future international collaborations. The scientific program also included a visit to the 64-m Sardinia Radio Telescope (SRT) and the EVN Users Meeting, where astronomers have provided useful feedback on various matters regarding EVN operations.

The research leading to these results has received funding from the European Commission Seventh Framework Programme (FP/2007-2013) under grant agreement No 283393 (RadioNet3)


Andrea Tarchi
Marcello Giroletti
Luigina Feretti
conference main image
Welcome and introduction
SESSION 1 - Low luminosity AGN and starburst galaxies
SESSION 2 - Powerful AGN, jets and gamma-ray emission
SESSION 3 - Technological issues and new developments
SESSION 4 - Star formation
SESSION 5 - Current & future facilities and international collaborations
SESSION 6 - Astrometry and planetary science
SESSION 7 - Supernovae and late stages of stellar evolution
SESSION 8 - Milky Way
SESSION 9 - Pulsar and transient objects
Welcome and introduction
EVN: Present and Future
PoS(EVN 2014)001 pdf A. Zensus and E. Ros
SESSION 1 - Low luminosity AGN and starburst galaxies
Revealing jet radio emission from intermediate-mass black holes
PoS(EVN 2014)002 pdf M. Mezcua
Four hot DOGs eaten up with the EVN
PoS(EVN 2014)003 pdf S. Frey, Z. Paragi, K.E. Gabányi and T. An
On the origin of radio emission in Radio-Quiet AGN and their connection to X-rays
PoS(EVN 2014)004 pdf F. Panessa, L. Bassani, A. Bazzano, G. Bicknell, P. Castangia, M. Giroletti, E. Maiorano, A. Malizia, A. Tarchi and P. Ubertini
Things that go bump in the night: the curious case of NGC660
PoS(EVN 2014)006 pdf M. Argo, I. van Bemmel, S. Connolly and R.J. Beswick
EVN observations of weak blazars
PoS(EVN 2014)007 pdf F. Mantovani
Broad absorption line (BAL) quasars as a class of low luminosity AGNs
PoS(EVN 2014)008 pdf M. Kunert-Bajraszewska
EVN imaging of the LIRGI sample
PoS(EVN 2014)009 pdf N. Ramírez-Olivencia
LeMMINGs e-MERLIN survey of nearby galaxies
PoS(EVN 2014)010 pdf R.J. Beswick, M. Argo, R. Evans, I. McHardy, D.R.A. Williams and J. Westcott
The e-MERGE Legacy Survey
PoS(EVN 2014)011 pdf T. Muxlow
SESSION 2 - Powerful AGN, jets and gamma-ray emission
Radio and gamma ray connection in relativistic jets
PoS(EVN 2014)012 pdf M. Orienti
Millimiter VLBI observations: Black Hole Physics and the Origin of Jets
PoS(EVN 2014)013 pdf T.P. Krichbaum
An EVN survey of hard spectrum gamma ray sources
PoS(EVN 2014)014 pdf M. Giroletti, R. Lico, H.E. Bignall, L. Costamante, F. D'Ammando, G. Giovannini, M. Orienti, C. Reynolds and G. Tosti
Connection between parsec-scale radio jet and gamma-ray flares in the blazar 1156+295
PoS(EVN 2014)015 pdf
V. Ramakrishnan, J. Leon-Tavares, E. Rastorgueva-Foi, K. Wiik, S.G. Jorstad, A. Marscher, M. Tornikoski, I. Agudo, A. Lahteenmaki, E. Valtaoja, M.F. Aller, D.A. Blinov, C. Casadio, N.V. Efimova, M.A. Gurwell, J.L. Gómez, V.A. Hagen-Thorn, M. Joshi, E. Järvelä, T.S. Konstantinova, E.N. Kopatskaya, V.M. Larionov, E.G. Larionova, L.V. Larionova, N. Lavonen, N.R. MacDonald, I. McHardy, S.N. Molina, D.A. Morozova, E. Nieppola, J. Tammi, B.W. Taylor and I.S. Troitsky
High resolution mm-VLBI imaging of Cygnus A
PoS(EVN 2014)016 pdf B. Boccardi, T.P. Krichbaum, U. Bach, E. Ros and A. Zensus
Continuing EVN monitoring of HST-1 in the jet of M87
PoS(EVN 2014)018 pdf K. Hada, M. Giroletti, G. Giovannini, C. Casadio, M. Beilicke, A. Cesarini, C.C. Cheung, A. Doi, J.L. Gómez, M. Kino and H. Nagai
The nuclear structure of 3C84 with space VLBI (RadioAstron) observations
PoS(EVN 2014)021 pdf G. Giovannini, M. Orienti, T. Savolainen, H. Nagai, M. Giroletti and K. Hada
Consequences of a possible jet-star interaction in the inner central parsec of Centaurus A
PoS(EVN 2014)024 pdf C. Müller, M. Kadler, K. Mannheim, M. Perucho, R. Ojha, E. Ros, R. Schulz and J. Wilms
Very Long Baseline Polarimetry and the Gamma-ray connection in Markarian 421 during the broadband campaign in 2011
PoS(EVN 2014)025 pdf R. Lico, M. Giroletti, M. Orienti, J.L. Gómez, C. Casadio, F. D'Ammando, W. Cotton, P.G. Edwards, L. Fuhrmann, S.G. Jorstad, M. Kino, Y.Y. Kovalev, T.P. Krichbaum, A. Marscher, D. Paneque, K. Sokolovsky, B.G. Piner and M.G. Blasi
Longitudinal and transverse velocity fields in parsec-scale jets
PoS(EVN 2014)026 pdf F. Mertens and A. Lobanov
5 year Global 3-mm VLBI survey of Gamma-ray active blazars
PoS(EVN 2014)028 pdf J.A. Hodgson, T.P. Krichbaum, A. Marscher, S.G. Jorstad, I. Marti-Vidal, M. Lindqvist, M. Bremer, S. Sanchez, P. de Vicente and A. Zensus
Mapping HI absorption at z=0.026 against a resolved background CSO
PoS(EVN 2014)029 pdf A. Biggs, M. Zwaan, J. Liske and F. Briggs
VLBI observations of the water megamaser in the nucleus of the Compton-thick AGN IRAS15480-0344
PoS(EVN 2014)030 pdf P. Castangia, A. Caccianiga, P. Severgnini, A. Tarchi and R. Della Ceca
SESSION 3 - Technological issues and new developments
Present status and technical directions of the EVN
PoS(EVN 2014)031 pdf M. Lindqvist
DBBC3 Development
PoS(EVN 2014)032 pdf G. Tuccari, W. Alef, A. Bertarini, S. Buttaccio, S. Casey, A. Felke, M. Lindqvist, P.R. Platania and M. Wunderlich
The X/Ka Celestial Reference Frame
PoS(EVN 2014)033 pdf C. Garcia-Miro
Solving the polarization problem in ALMA-VLBI observations
PoS(EVN 2014)034 pdf I. Marti-Vidal, J. Conway, M. Lindqvist, A. Roy, W. Alef and A. Zensus
Modeling of propagation in the neutral atmosphere for radio astronomy data analysis: a paradigm shift
PoS(EVN 2014)035 pdf L. Petrov
Out of focus holography at Effelsberg
PoS(EVN 2014)036 pdf U. Bach
SESSION 4 - Star formation
High-Mass Star Formation and Maser VLBI
PoS(EVN 2014)037 pdf L. Moscadelli
The methanol maser ring G23.657-0.127 after 9 years
PoS(EVN 2014)039 pdf A. Bartkiewicz, A. Sanna, M. Szymczak and L. Moscadelli
3D Gas Dynamics from Methanol Masers observed with the EVN reveals Rotating Disks around O-type Young Stars
PoS(EVN 2014)040 pdf C. Goddi and L. Moscadelli
Magnetic field measurements at milliarcsecond resolution around massive young stellar objects.
PoS(EVN 2014)041 pdf G. Surcis, W.H.T. Vlemmings, H.J. van Langevelde, B. Hutawarakorn Kramer, A. Bartkiewicz and H. Engelkamp
Transition in the Outflow Evoution of the Massive Star-forming Region W75N
PoS(EVN 2014)042 pdf J.S. Kim and S.W. Kim
SESSION 5 - Current & future facilities and international collaborations
Blazars at Low Radio Frequencies
PoS(EVN 2014)043 pdf J. Trüstedt, M. Kadler, M. Brüggen, H. Falcke, G. Heald, J. McKean, C. Müller, E. Ros, R. Schulz and J. Wilms
Towards the Italian VLBI network: first tests and perspectives
PoS(EVN 2014)045 pdf M. Stagni
The SRT: Astronomical Validation & Scientific Perspectives
PoS(EVN 2014)046 pdf
I. Prandoni, A. Melis, C. Migoni, D. Perrodin, M. Burgay, F. Govoni, M. Murgia, A. Pellizzoni, S. Righini, A. Tarchi, M. Bartolini, P. Bolli, M. Buttu, P. Castangia, S. Casu, R. Concu, A. Corongiu, N. D’Amico, E. Egron, A. Fara, F. Gaudiomonte, D. Guidetti, N.M. Iacolina, F. Massi, F. Nasyr, A. Orfei, A. Orlati, T. Pisanu, S. Poppi, I. Porceddu, A. Ridolfi, R. Ricci, C. Stanghellini, C. Tiburzi, A. Trois, V. Vacca, G. Valente and A. Zanichelli
SESSION 6 - Astrometry and planetary science
Astrometry and new methods made possible by the new generation of instruments
PoS(EVN 2014)047 pdf M. Rioja, R. Dodson, T.H. Jung and B.W. Sohn
Direct comparison between VERA, VLBA and EVN astrometry results and an analytic gas dynamics model
PoS(EVN 2014)048 pdf N. Sakai
Project RISARD - the story so far
PoS(EVN 2014)049 pdf M. Gawronski
Scintillation of Venus and Mars Express radio signal on interplanetary and ionosphere plasma
PoS(EVN 2014)050 pdf G. Molera Calvés, G. Cimò, S.V. Pogrebenko, D. Duev, T. Bocanegra-Bahamón and K. Rajpurohit
SESSION 7 - Supernovae and late stages of stellar evolution
VLBI of supernovae and gamma-ray bursts
PoS(EVN 2014)051 pdf M. Bietenholz
Constraints on the progenitor system and the environs of SN 2014J from deep EVN and MERLIN radio observations
PoS(EVN 2014)052 pdf attachments M. Perez-Torres
VLBI detection of the internal shocks in nova V959 Mon
PoS(EVN 2014)053 pdf J. Yang, Z. Paragi, T. O'Brien, L. Chomiuk and J.D. Linford
Sub-mm maser VLBI: how do stellar winds break free from the star's gravity?
PoS(EVN 2014)054 pdf A. Richards, A. Baudry, S. Etoka, E. Humphreys, V. Impellizzeri, H.J. van Langevelde and W.H.T. Vlemmings
SESSION 8 - Milky Way
Maser Astrometry with VLBI and galactic structure
PoS(EVN 2014)055 pdf M. Honma
Binary stars in moving groups
PoS(EVN 2014)056 pdf R. Azulay
Discovering the colliding wind binary HD 93129A
PoS(EVN 2014)057 pdf B. Marcote, P. Benaglia, J. Moldón, E. Nelan, M. De Becker, S. Dougherty and B. Koribalski
Preliminary results the COBRaS e-MERLIN legacy project
PoS(EVN 2014)058 pdf D. Fenech, J. Morford and R. Prinja
Phase-lag distance of OH83.4-0.9 from eMERLIN and NRT observations
PoS(EVN 2014)059 pdf attachments S. Etoka, D. Engels, E. Gerard and A. Richards
SiO masers from AGB stars in the vibrationally excited v=1,v=2, and v=3 states
PoS(EVN 2014)060 pdf J.F. Desmurs, V. Bujarrabal, M. Lindqvist, J. Alcolea, R. Soria-Ruiz and P. Bergman
Flaring Episodes of Cyg X-3 with Korean and Japanses VLBI
PoS(EVN 2014)061 pdf S.W. Kim
SESSION 9 - Pulsar and transient objects
Transient sources at the highest angular resolution
PoS(EVN 2014)062 pdf M. Massi
A pulsar wind nebula associated with PSR J2032+4127 as the powering source of TeV J2032+4130
PoS(EVN 2014)063 pdf J. Moldon, J.M. Paredes, M. Ribó, V. Bosh-Ramon, V. Zabalza, J. Martí, M. Kramer, A. Lyne and B. Stappers
Study of scattering material with RadioAstron-VLBI observations
PoS(EVN 2014)064 pdf A. Andrianov, T. Smirnova, V. Shishov, P. Mikhail, N. Kardashev, S. Vladimir, C. Gwinn, M. Johnson, H.E. Bignall, A. Deller and M. Kramer
Preliminary results of giant pulse investigations from Crab pulsar with Radioastron.
PoS(EVN 2014)065 pdf A. Rudnitskiy, P. Mikhail and S. Vladimir
Probing interstellar scattering towards the Galactic centre with pulsar VLBI
PoS(EVN 2014)066 pdf attachments O. Wucknitz
Resolving the nature of compact ultra-steep spectrum sources
PoS(EVN 2014)068 pdf M. Argo, R. Steadman, Z. Paragi, H.R. Kloeckner and H.J.A. Rottgering
10 Years of Multi-Frequency Monitoring of Blazars with Medicina and Noto
PoS(EVN 2014)069 pdf U. Bach, M. Giroletti, P. Leto, C.M. Raiteri, C.S. Buemi, F. D'Ammando, L. Fuhrmann, M. Orienti, A. Orlati, M. Rossini, C. Trigilio, G. Umana and M. Villata
Probing high resolution spectroscopy with the Digital BBC VLBI-backend
PoS(EVN 2014)070 pdf U. Bach, S. Brauch, B. Winkel and A. Kraus
Space-VLBI with RadioAstron: new correlator capabilities at MPIfR
PoS(EVN 2014)119 pdf G. Bruni, J. Anderson, W. Alef, A. Lobanov and A. Zensus
Orientation of the cores of hybrid morphology radio sources
PoS(EVN 2014)072 pdf M. Ceglowski, M. Kunert-Bajraszewska and M. Gawronski
Probing Very Early Stage of Radio Source Evolution in NGC 1275 with VERA
PoS(EVN 2014)073 pdf H. Chida
MERLIN and eMERLIN OH maser observations toward the star forming region complex W49 A
PoS(EVN 2014)075 pdf attachments S. Etoka, K. Asanok, M.D. Gray, A. Richards, B. Kramer and N. Gasiprong
J1026+2542: proper motion in a blazar jet at z=5.27
PoS(EVN 2014)076 pdf S. Frey, Z. Paragi, J. Fogasy and L. Gurvits
The survey for new AGN candidates within the field of Fermi unassociated gamma-ray sources
PoS(EVN 2014)077 pdf Y. Fujinaga
e-MERLIN observation of the puzzling TeV source HESS J1943+213
PoS(EVN 2014)078 pdf K.É. Gabányi, G. Dubner, E. Giacani, S. Frey and Z. Paragi
VLBI digital terminal at the Deep Space Network: first results from non-JPL correlators
PoS(EVN 2014)081 pdf C. Garcia-Miro
Twin SMBH candidates in the BCG of RBS 797
PoS(EVN 2014)082 pdf M. Gitti, M. Giroletti, G. Giovannini, L. Feretti and E. Liuzzo
Wide-field VLBA observations of the COSMOS field
PoS(EVN 2014)083 pdf N. Herrera Ruiz, E. Middelberg and A. Deller
Star formation in the central kpc region of NGC1614
PoS(EVN 2014)084 pdf R. Herrero-Illana, M. Perez-Torres, A. Alberdi, A. Alonso-Herrero, L. Colina, A. Efstathiou, L. Hernandez-Garcia, D. Miralles-Caballero, P. Vaisanen, C. Packham, V. Rajpaul and A.A. Zijlstra
Mm-VLBI Phase correction capability with the korean VLBI Network
PoS(EVN 2014)086 pdf attachments T.H. Jung, B.W. Sohn and D.Y. Byun
Localizing the gamma rays from blazar PKS 1502+106
PoS(EVN 2014)087 pdf V. Karamanavis, L. Fuhrmann, T.P. Krichbaum, E. Angelakis, J.A. Hodgson, I. Myserlis, I. Nestoras, A. Zensus, H. Ungerechts and A. Sievers
SFXC: The new EVN data processor
PoS(EVN 2014)088 pdf M. Kettenis and A. Keimpema
Key Science Observations of AGNs with KaVA array
PoS(EVN 2014)090 pdf M. Kino, K. Niinuma, G.Y. Zhao and B.W. Sohn
The off-axis jet structure in Mrk 501 at mm-wavelengths
PoS(EVN 2014)091 pdf S. Koyama, M. Kino, M. Giroletti, A. Doi, H. Nagai, K. Hada, K. Niinuma, M. Orienti, G. Giovannini, E. Ros, T. Savolainen, M. Perez-Torres and T.P. Krichbaum
Nearby radio loud AGN and the Unified Model
PoS(EVN 2014)094 pdf E. Liuzzo, G. Giovannini and M. Giroletti
The changing morphology of the radio outflow of HESS J0632+057 along its orbit
PoS(EVN 2014)095 pdf B. Marcote, J. Moldón, M. Ribó, J.M. Paredes and Z. Paragi
The Nordic tools for advanced analysis of interferometry data
PoS(EVN 2014)096 pdf I. Marti-Vidal, W.H.T. Vlemmings, L. Lindroos and S. Muller
The LOFAR long baseline snapshot calibrator survey
PoS(EVN 2014)097 pdf J. Moldon, A. Deller, O. Wucknitz, N. Jackson, A. Drabent, T.D. Carozzi, J.E. Conway, E. Varenius, A.D. Kapinska, J. McKean, L. Morabito and P. Zarka
Baseline geometry effects due to source structure in geodetic VLBI
PoS(EVN 2014)098 pdf A.J. Mora Diaz
Constraining wind clumping and mass-loss in OB stars with COBRaS: The e-MERLIN Cyg OB II Radio Survey
PoS(EVN 2014)099 pdf J. Morford
Multi-epoch, quasi-simultaneous 22/43GHz observations of the M84 nucleus with VERA
PoS(EVN 2014)100 pdf S. Nakahara
Multi-epoch and multi-frequency VLBI observation of X-ray to gamma-ray flare in TeV blazar Mrk 421
PoS(EVN 2014)101 pdf K. Niinuma, M. Kino and A. Doi
Opening angles and shapes of parsec-scale AGN jets
PoS(EVN 2014)104 pdf A. Pushkarev, M.L. Lister, Y.Y. Kovalev and T. Savolainen
Perplexing correlations between Gamma-ray emission and parsec-scale jet orientation variations in the BL Lac object S5 0716+714
PoS(EVN 2014)120 pdf B. Rani, T.P. Krichbaum, A. Marscher, S.G. Jorstad, J.A. Hodgson, L. Fuhrmann and A. Zensus
Determination of annual parallax for cataclysmic binary system AM Herculis with the EVN interferometric network.
PoS(EVN 2014)106 pdf G. Rycyk and M. Gawronski
VERA frequest monitoring of the Parsec-scale jet in the BL Lac Object OJ 287 simultaneous with gamma-ray flares during 2011-2012
PoS(EVN 2014)108 pdf S. Sawada-Satoh
The EVN view of the highly variable TeV active galaxy IC310
PoS(EVN 2014)109 pdf R. Schulz, M. Kadler, E. Ros, D. Eisenacher Glawion, U. Bach, D. Elsaesser, C. Grossberger, I. Kreykenbohm, K. Mannheim, C. Müller, J. Trüstedt and J. Wilms
DBBC3: AntArr Project
PoS(EVN 2014)112 pdf G. Tuccari, W. Alef, S. Buttaccio, V. Tornatore and M. Wunderlich
Using software spectrometer to ensure VLBI signal chain reliability
PoS(EVN 2014)113 pdf attachments M. Uunila, J. Kallunki and G. Molera Calvés
Violent maser events in the cirumstellar envelope of the pre-planetary nebula IRAS18276-1431
PoS(EVN 2014)116 pdf P. Wolak, M. Szymczak, A. Bartkiewicz and E. Gerard
Wide field observations from the e-MERGE survey
PoS(EVN 2014)117 pdf N. Wrigley
KVN Source-Frequency Phase-Referencing Observation of 3C 66A & 3C 66B
PoS(EVN 2014)118 pdf G.Y. Zhao, T.H. Jung, R. Dodson, M. Rioja and B.W. Sohn