FOXSI team (UC Berkeley/NASA/JAXA), JAXA/NAOJ

Nanoflares as coronal heaters

Nanoflares may be the source of heating of the Sun's corona to several million Kelvin.

Latest Research

  • Article |

    We calculate the continuous nanohertz gravitational-wave emission from individual supermassive black hole binaries and the gravitational-wave background they generate, which will be observable with pulsar timing arrays.

    • Chiara M. F. Mingarelli
    • , T. Joseph W. Lazio
    • , Alberto Sesana
    • , Jenny E. Greene
    • , Justin A. Ellis
    • , Chung-Pei Ma
    • , Steve Croft
    • , Sarah Burke-Spolaor
    •  & Stephen R. Taylor
  • Letter |

    The discovery of the most energetic transient event to date is reported. Its spectroscopic properties and temporal evolution imply it is powered by shock interaction between expanding material and large quantities of surrounding dense matter.

    • E. Kankare
    • , R. Kotak
    • , S. Mattila
    • , P. Lundqvist
    • , M. J. Ward
    • , M. Fraser
    • , A. Lawrence
    • , S. J. Smartt
    • , W. P. S. Meikle
    • , A. Bruce
    • , J. Harmanen
    • , S. J. Hutton
    • , C. Inserra
    • , T. Kangas
    • , A. Pastorello
    • , T. Reynolds
    • , C. Romero-Cañizales
    • , K. W. Smith
    • , S. Valenti
    • , K. C. Chambers
    • , K. W. Hodapp
    • , M. E. Huber
    • , N. Kaiser
    • , R.-P. Kudritzki
    • , E. A. Magnier
    • , J. L. Tonry
    • , R. J. Wainscoat
    •  & C. Waters
  • Letter |

    A galaxy at z ~ 1 is multiply imaged by strong lensing with different spatial resolutions. The properties of the giant stellar clumps within the galaxy depend on the resolution of the images. This observational effect must be considered in galactic models of star formation.

    • Antonio Cava
    • , Daniel Schaerer
    • , Johan Richard
    • , Pablo G. Pérez-González
    • , Miroslava Dessauges-Zavadsky
    • , Lucio Mayer
    •  & Valentina Tamburello
  • Letter |

    Sensitive X-ray polarization measurements of the Crab pulsar by the Indian AstroSat satellite confirm earlier indications of strongly polarized off-pulse emission but also reveal variations in polarization properties within the off-pulse region.

    • S. V. Vadawale
    • , T. Chattopadhyay
    • , N. P. S. Mithun
    • , A. R. Rao
    • , D. Bhattacharya
    • , A. Vibhute
    • , V. B. Bhalerao
    • , G. C. Dewangan
    • , R. Misra
    • , B. Paul
    • , A. Basu
    • , B. C. Joshi
    • , S. Sreekumar
    • , E. Samuel
    • , P. Priya
    • , P. Vinod
    •  & S. Seetha
  • Letter |

    This paper reports the detection of a high-redshift galaxy that may be more representative of ‘normal’ star-forming galaxies formed in the first billion years of the Universe than the extreme starbursts discovered to date.

    • Jorge A. Zavala
    • , Alfredo Montaña
    • , David H. Hughes
    • , Min S. Yun
    • , R. J. Ivison
    • , Elisabetta Valiante
    • , David Wilner
    • , Justin Spilker
    • , Itziar Aretxaga
    • , Stephen Eales
    • , Vladimir Avila-Reese
    • , Miguel Chávez
    • , Asantha Cooray
    • , Helmut Dannerbauer
    • , James S. Dunlop
    • , Loretta Dunne
    • , Arturo I. Gómez-Ruiz
    • , Michał J. Michałowski
    • , Gopal Narayanan
    • , Hooshang Nayyeri
    • , Ivan Oteo
    • , Daniel Rosa González
    • , David Sánchez-Argüelles
    • , F. Peter Schloerb
    • , Stephen Serjeant
    • , Matthew W. L. Smith
    • , Elena Terlevich
    • , Olga Vega
    • , Alan Villalba
    • , Paul van der Werf
    • , Grant W. Wilson
    •  & Milagros Zeballos

News & Comment

  • News and Views |

    A technique for weighing galaxy clusters using distortions of the cosmic microwave background is entering an era of precision measurements.

    • Mathew S. Madhavacheril
  • News and Views |

    The tropical stratospheric temperature and wind field of several planets oscillate quasi-periodically. Recent Cassini observations show that Saturn’s oscillations were disturbed for more than three years by the year-long giant storm that appeared in 2010.

    • Cheng Li