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GRB 090423 at a redshift of z ≈ 8.1

Author

Listed:
  • R. Salvaterra

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • M. Della Valle

    (INAF, Osservatorio Astronomico di Capodimonte, Salita Moiariello 16, 80131 Napoli, Italy
    European Southern Observatory
    International Centre for Relativistic Astrophysics, Piazzale della Repubblica 2, 65122 Pescara, Italy)

  • S. Campana

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • G. Chincarini

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy
    Università di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy)

  • S. Covino

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • P. D’Avanzo

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy
    Università di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy)

  • A. Fernández-Soto

    (Instituto de Fisica de Cantabria, CSIC-Universidad Cantabria, Avenida de los Castros s/n, 39005 Santander, Spain)

  • C. Guidorzi

    (Università di Ferrara, Via Saragat 1, 44100 Ferrara, Italy)

  • F. Mannucci

    (INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy)

  • R. Margutti

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy
    Università di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy)

  • C. C. Thöne

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • L. A. Antonelli

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • S. D. Barthelmy

    (NASA, Goddard Space Flight Center, Greenbelt, Maryland 20771, USA)

  • M. De Pasquale

    (Mullard Space Science Laboratory (UCL), Holmbury Road, Holmbury St Mary, Dorking RH5 6NT, UK)

  • V. D’Elia

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • F. Fiore

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • D. Fugazza

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • L. K. Hunt

    (INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy)

  • E. Maiorano

    (INAF, IASF di Bologna, Via Gobetti 101, 40129 Bologna, Italy)

  • S. Marinoni

    (INAF, Fundación Galileo Galilei, Rambla José Ana Fernández Pérez 7, 38712 Breña Baja, TF - Spain
    Università degli Studi di Bologna, Via Ranzani 1, 40127 Bologna, Italy)

  • F. E. Marshall

    (NASA, Goddard Space Flight Center, Greenbelt, Maryland 20771, USA)

  • E. Molinari

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy
    INAF, Fundación Galileo Galilei, Rambla José Ana Fernández Pérez 7, 38712 Breña Baja, TF - Spain)

  • J. Nousek

    (Pennsylvania State University, University Park, Pennsylvania 16802, USA)

  • E. Pian

    (INAF, Trieste Astronomical Observatory, Via G. B. Tiepolo 11, 34143 Trieste, Italy
    Scuola Normale Superiore, Piazza dei Cavalieri 1, 56100 Pisa, Italy)

  • J. L. Racusin

    (Pennsylvania State University, University Park, Pennsylvania 16802, USA)

  • L. Stella

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • L. Amati

    (INAF, IASF di Bologna, Via Gobetti 101, 40129 Bologna, Italy)

  • G. Andreuzzi

    (INAF, Fundación Galileo Galilei, Rambla José Ana Fernández Pérez 7, 38712 Breña Baja, TF - Spain)

  • G. Cusumano

    (INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo, Via Ugo La Malfa 153, 90146 Palermo, Italy)

  • E. E. Fenimore

    (Los Alamos National Laboratory, PO Box 1663, Los Alamos, New Mexico 87545, USA)

  • P. Ferrero

    (Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany)

  • P. Giommi

    (ASI Science Data Center, ASDC c/o ESRIN, Via G. Galilei, 00044 Frascati, Italy)

  • D. Guetta

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • S. T. Holland

    (NASA, Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
    Universities Space Research Association, 10211 Wincopin Circle, Suite 500, Columbia, Maryland 21044, USA
    Centre for Research and Exploration in Space Science and Technology, Code 668.8, Greenbelt, Maryland 20771, USA)

  • K. Hurley

    (Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, California 94720-7450, USA)

  • G. L. Israel

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • J. Mao

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • C. B. Markwardt

    (NASA, Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
    Centre for Research and Exploration in Space Science and Technology, Code 668.8, Greenbelt, Maryland 20771, USA
    University of Maryland, College Park, Maryland 20742, USA)

  • N. Masetti

    (INAF, IASF di Bologna, Via Gobetti 101, 40129 Bologna, Italy)

  • C. Pagani

    (Pennsylvania State University, University Park, Pennsylvania 16802, USA)

  • E. Palazzi

    (INAF, IASF di Bologna, Via Gobetti 101, 40129 Bologna, Italy)

  • D. M. Palmer

    (INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica di Palermo, Via Ugo La Malfa 153, 90146 Palermo, Italy)

  • S. Piranomonte

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

  • G. Tagliaferri

    (INAF, Osservatorio Astronomico di Brera, Via E. Bianchi 46, 23807 Merate (LC), Italy)

  • V. Testa

    (INAF, Osservatorio Astronomico di Roma, Via di Frascati 33, 00040 Monte Porzio Catone, Rome, Italy)

Abstract

Bursting at high redshift Two groups present redshift determinations and other spectroscopic data for the γ-ray burst GRB 090423 — now the earliest and most distant astronomical object known. Salvaterra et al. report its initial detection with the Swift satellite on 23 April 2009, and a redshift determination with the Telescopio Nazionale Galileo on La Palma 14 hours after the burst, obtaining z ≈ 8.1. Tanvir et al. used the United Kingdom Infrared Telescope, Hawaii, from about 20 minutes after the burst and arrive at z ≈ 8.2. The previous highest redshift known for any object was z = 6.96 for a Lyman-α emitting galaxy. These measurements imply that massive stars were being produced and were dying as γ-ray bursts as early as about 600 million years after the Big Bang, and that their properties are very similar to those stars producing γ-ray bursts 10 billion years later.

Suggested Citation

  • R. Salvaterra & M. Della Valle & S. Campana & G. Chincarini & S. Covino & P. D’Avanzo & A. Fernández-Soto & C. Guidorzi & F. Mannucci & R. Margutti & C. C. Thöne & L. A. Antonelli & S. D. Barthelmy & , 2009. "GRB 090423 at a redshift of z ≈ 8.1," Nature, Nature, vol. 461(7268), pages 1258-1260, October.
    • Handle: RePEc:nat:nature:v:461:y:2009:i:7268:d:10.1038_nature08445
    DOI: 10.1038/nature08445
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