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

  • Letter |

    The extremely bright GRB 160625B, consisting of three sub-bursts separated by quiescent intervals, shows a transition from thermal to non-thermal radiation that indicates a change of jet composition from a fireball to a Poynting-flux-dominated jet.

    • B.-B. Zhang
    • , B. Zhang
    • , A. J. Castro-Tirado
    • , Z. G. Dai
    • , P.-H. T. Tam
    • , X.-Y. Wang
    • , Y.-D. Hu
    • , S. Karpov
    • , A. Pozanenko
    • , F.-W. Zhang
    • , E. Mazaeva
    • , P. Minaev
    • , A. Volnova
    • , S. Oates
    • , H. Gao
    • , X.-F. Wu
    • , L. Shao
    • , Q.-W. Tang
    • , G. Beskin
    • , A. Biryukov
    • , S. Bondar
    • , E. Ivanov
    • , E. Katkova
    • , N. Orekhova
    • , A. Perkov
    • , V. Sasyuk
    • , L. Mankiewicz
    • , A. F. Żarnecki
    • , A. Cwiek
    • , R. Opiela
    • , A. Zadrożny
    • , R. Aptekar
    • , D. Frederiks
    • , D. Svinkin
    • , A. Kusakin
    • , R. Inasaridze
    • , O. Burhonov
    • , V. Rumyantsev
    • , E. Klunko
    • , A. Moskvitin
    • , T. Fatkhullin
    • , V. V. Sokolov
    • , A. F. Valeev
    • , S. Jeong
    • , I. H. Park
    • , M. D. Caballero-García
    • , R. Cunniffe
    • , J. C. Tello
    • , P. Ferrero
    • , S. B. Pandey
    • , M. Jelínek
    • , F. K. Peng
    • , R. Sánchez-Ramrez
    •  & A. Castellón
  • 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

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

Natureevents Directory