Read the October issue

This month we look at star formation in Ophiuchus (pictured right), the middle corona of the Sun, the jet structure of Centaurus A (cover) and much more...

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  • A sensitive Breakthrough Listen search for technosignatures towards Proxima Centauri has resulted in a viable narrowband signal. The observational approach, using the Parkes Murriyang telescope, is described here, while the signal of interest is analysed in a companion paper by Sheikh et al.

    • Shane Smith
    • Danny C. Price
    • Andrew Zic
    Article Open Access
  • A brightness dip in the extragalactic X-ray binary M51-ULS-1 can be well fit by a planet transit model in which the eclipser is most likely Saturn-sized. The locations of possible orbits are consistent with the survival of a planet bound to a mass-transfer binary.

    • Rosanne Di Stefano
    • Julia Berndtsson
    • Nia Imara
  • A population study of near-infrared spectra of 19 hot giant planets shows a correlation between the strength of the 1.4 μm water band and temperature, which is broadly regulated by irradiation. However, the observed scatter around the mean is indicative of the effect of individual planetary formation pathways on the composition.

    • Megan Mansfield
    • Michael R. Line
    • Gael M. Roudier
  • From its optical light curve, the white dwarf in the binary system TW Pictoris appears to be switching between two different intensities of accretion on timescales of hours. This behaviour is reminiscent of that seen in transitional millisecond pulsars, where the switching occurs several times a minute.

    • S. Scaringi
    • D. de Martino
    • A. Papitto
  • Globular cluster NGC 2005 in the Large Magellanic Cloud (LMC) bears the elemental hallmarks of being an accreted object: a surviving fragment of a galaxy that fell into the LMC long enough ago to have erased any dynamical signature of accretion.

    • A. Mucciarelli
    • D. Massari
    • L. Origlia
  • Lucy mission’s bold objective is to study a class of distant asteroids — the Trojan asteroids — never explored before by spacecraft, explain Deputy Project Scientist Simone Marchi and Deputy Principal Investigator Cathy Olkin.

    • Simone Marchi
    • Catherine B. Olkin
    Mission Control
  • Without a proper accounting of known and unknown systematics and uncertainties, combining information across multiple surveys, wavelengths, and detectors may be risky. Realizing the true potential of multi-messenger and panchromatic astrophysics requires getting data integration right.

    • Joshua S. Speagle (沈佳士)
    • Gwendolyn M. Eadie

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