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Pré-Publication, Document De Travail Année : 2019

TeraHertz Exploration and Zooming-in for Astrophysics (THEZA): ESA Voyage 2050 White Paper

Leonid I. Gurvits
  • Fonction : Auteur
Zsolt Paragi
  • Fonction : Auteur
John Conway
  • Fonction : Auteur
Jordy Davelaar
Christian M. Fromm
  • Fonction : Auteur
Cristina Garcia Miro
  • Fonction : Auteur
Michael A. Garrett
  • Fonction : Auteur
Marcello Giroletti
  • Fonction : Auteur
Ciriaco Goddi
Jose-Luis Gaomez
  • Fonction : Auteur
Jeffrey van Der Gucht
  • Fonction : Auteur
Jose Carlos Guirado
  • Fonction : Auteur
Zoltaan Haiman
  • Fonction : Auteur
Frank Helmich
  • Fonction : Auteur
Violette Impellizzeri
  • Fonction : Auteur
Michael Lindqvist
  • Fonction : Auteur
Hendrik Linz
  • Fonction : Auteur
Elisabetta Liuzzo
Andrei P. Lobanov
  • Fonction : Auteur
Yosuke Mizuno
Freek Roelofs
  • Fonction : Auteur
Kazi L. J. Rygl
  • Fonction : Auteur
Tuomas Savolainen
  • Fonction : Auteur
Tiziana Venturi
  • Fonction : Auteur
J. Anton Zensus
  • Fonction : Auteur

Résumé

The astrophysical agenda of the 21st century requires a very sharp view of celestial objects. High angular resolution studies are essential for fundamental studies of a broad variety of astrophysical phenomena ranging from relativistic physics of black holes, their gravitational and electromagnetic imprints, violent transient processes, including those producing detectable gravitational waves, birth and evolution of planetary systems. Over the past decades, radio astronomy made huge leap in achieving ground-breaking angular resolution measured in tens of microarcseconds (one tenth of nanoradian and better). Recently a global Event Horizon Telescope (EHT) collaboration obtained first direct images of the shadow of a super-massive black hole in the nucleus of the active galaxy M87. These observations were conducted at 230 GHz. The two first generation Space Very Long Baseline Interferometry (VLBI) missions, VSOP/HALCA led by the Japan Aerospace Exploration Agency (JAXA) and RadioAstron led by the Russia Roscosmos State Corporation and Russia Academy of Sciences, achieved the highest angular resolution at frequencies from 0.3 to 22 GHz in observations conducted in the period 1997 - 2019. The next step in advancing high angular resolution radio astronomy is in combining high frequency (millimeter and sub-millimeter wavelengths) and interferometric baselines exceeding the Earth diameter. The present THEZA White Paper describes a combination which would unify technology developments in giga-/tera-hertz instrumentation and space-borne radio astronomy. The current preprint version of the THEZA White Paper is slightly re-formatted and edited comparing to the official submitted version.

Dates et versions

hal-02381643 , version 1 (26-11-2019)

Identifiants

Citer

Leonid I. Gurvits, Zsolt Paragi, Viviana Casasola, John Conway, Jordy Davelaar, et al.. TeraHertz Exploration and Zooming-in for Astrophysics (THEZA): ESA Voyage 2050 White Paper. 2019. ⟨hal-02381643⟩
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