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The Low-Frequency Array (LOFAR): Opening a New Window on the Universe

  • Namir E. Kassim (a1), T. Joseph W. Lazio (a1), William C. Erickson (a2), Patrick C. Crane (a3), R. A. Perley (a4) and B. Hicks (a5)...

Abstract

Decametric wavelength imaging has been largely neglected in the quest for higher angular resolution because ionospheric structure limited interferometric imaging to short (< 5 km) baselines. The long wavelength (LW, 2—20 m or 15—150 MHz) portion of the electromagnetic spectrum thus remains poorly explored. The NRL-NRAO 74 MHz Very Large Array has demonstrated that self-calibration techniques can remove ionospheric distortions over arbitrarily long baselines. This has inspired the Low Frequency Array (LOFAR)—-a fully electronic, broad-band (15—150 MHz)antenna array which will provide an improvement of 2—3 orders of magnitude in resolution and sensitivity over the state of the art.

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The Low-Frequency Array (LOFAR): Opening a New Window on the Universe

  • Namir E. Kassim (a1), T. Joseph W. Lazio (a1), William C. Erickson (a2), Patrick C. Crane (a3), R. A. Perley (a4) and B. Hicks (a5)...

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