Compact astrophysical objects

Compact objects are compact stellar remnants, such as white dwarfs, neutron stars and black holes and specific types of these objects (e.g., pulsars and boson stars), as well as their larger counterparts, supermassive black holes. The study of compact objects deals with their properties and the extreme conditions in their vicinity.

Featured

Latest Research and Reviews

  • Research |

    Pulsar timing measurements show a mass ratio of about 0.8 for the double neutron-star system PSR J1913+1102, and population synthesis models indicate that such asymmetric systems represent 2–30% of merging binaries.

    • R. D. Ferdman
    • , P. C. C. Freire
    • , B. B. P. Perera
    • , N. Pol
    • , F. Camilo
    • , S. Chatterjee
    • , J. M. Cordes
    • , F. Crawford
    • , J. W. T. Hessels
    • , V. M. Kaspi
    • , M. A. McLaughlin
    • , E. Parent
    • , I. H. Stairs
    •  & J. van Leeuwen
    Nature 583, 211-214
  • Research |

    An analysis of the relation between a star’s initial mass and its final mass (as a white dwarf) reveals a kink in the initial mass range 1.65–2.10 M. This kink appears to correspond to the minimum mass required for carbon star formation in the Milky Way at solar metallicity.

    • Paola Marigo
    • , Jeffrey D. Cummings
    • , Jason Lee Curtis
    • , Jason Kalirai
    • , Yang Chen
    • , Pier-Emmanuel Tremblay
    • , Enrico Ramirez-Ruiz
    • , Pierre Bergeron
    • , Sara Bladh
    • , Alessandro Bressan
    • , Léo Girardi
    • , Giada Pastorelli
    • , Michele Trabucchi
    • , Sihao Cheng
    • , Bernhard Aringer
    •  & Piero Dal Tio
  • Research |

    Observations of the radio galaxy Centaurus A at teraelectronvolt energies resolve its large-scale jet and favour electron synchrotron processes as the source of its X-ray emission.

    • H. Abdalla
    • , R. Adam
    • , F. Aharonian
    • , F. Ait Benkhali
    • , E. O. Angüner
    • , M. Arakawa
    • , C. Arcaro
    • , C. Armand
    • , H. Ashkar
    • , M. Backes
    • , V. Barbosa Martins
    • , M. Barnard
    • , Y. Becherini
    • , D. Berge
    • , K. Bernlöhr
    • , R. Blackwell
    • , M. Böttcher
    • , C. Boisson
    • , J. Bolmont
    • , S. Bonnefoy
    • , J. Bregeon
    • , M. Breuhaus
    • , F. Brun
    • , P. Brun
    • , M. Bryan
    • , M. Büchele
    • , T. Bulik
    • , T. Bylund
    • , M. Capasso
    • , S. Caroff
    • , A. Carosi
    • , S. Casanova
    • , M. Cerruti
    • , T. Chand
    • , S. Chandra
    • , A. Chen
    • , S. Colafrancesco
    • , M. Curyło
    • , I. D. Davids
    • , C. Deil
    • , J. Devin
    • , P. deWilt
    • , L. Dirson
    • , A. Djannati-Ataï
    • , A. Dmytriiev
    • , A. Donath
    • , V. Doroshenko
    • , L. O’C. Drury
    • , J. Dyks
    • , K. Egberts
    • , G. Emery
    • , J.-P. Ernenwein
    • , S. Eschbach
    • , K. Feijen
    • , S. Fegan
    • , A. Fiasson
    • , G. Fontaine
    • , S. Funk
    • , M. Füßling
    • , S. Gabici
    • , Y. A. Gallant
    • , F. Gaté
    • , G. Giavitto
    • , D. Glawion
    • , J. F. Glicenstein
    • , D. Gottschall
    • , M.-H. Grondin
    • , J. Hahn
    • , M. Haupt
    • , G. Heinzelmann
    • , G. Henri
    • , G. Hermann
    • , J. A. Hinton
    • , W. Hofmann
    • , C. Hoischen
    • , T. L. Holch
    • , M. Holler
    • , D. Horns
    • , D. Huber
    • , H. Iwasaki
    • , M. Jamrozy
    • , D. Jankowsky
    • , F. Jankowsky
    • , A. Jardin-Blicq
    • , I. Jung-Richardt
    • , M. A. Kastendieck
    • , K. Katarzyński
    • , M. Katsuragawa
    • , U. Katz
    • , D. Khangulyan
    • , B. Khélifi
    • , J. King
    • , S. Klepser
    • , W. Kluźniak
    • , N. Komin
    • , K. Kosack
    • , D. Kostunin
    • , M. Kraus
    • , G. Lamanna
    • , J. Lau
    • , A. Lemière
    • , M. Lemoine-Goumard
    • , J.-P. Lenain
    • , E. Leser
    • , C. Levy
    • , T. Lohse
    • , I. Lypova
    • , J. Mackey
    • , J. Majumdar
    • , D. Malyshev
    • , V. Marandon
    • , A. Marcowith
    • , A. Mares
    • , C. Mariaud
    • , G. Martí-Devesa
    • , R. Marx
    • , G. Maurin
    • , P. J. Meintjes
    • , A. M. W. Mitchell
    • , R. Moderski
    • , M. Mohamed
    • , L. Mohrmann
    • , C. Moore
    • , E. Moulin
    • , J. Muller
    • , T. Murach
    • , S. Nakashima
    • , M. de Naurois
    • , H. Ndiyavala
    • , F. Niederwanger
    • , J. Niemiec
    • , L. Oakes
    • , P. O’Brien
    • , H. Odaka
    • , S. Ohm
    • , E. de Ona Wilhelmi
    • , M. Ostrowski
    • , I. Oya
    • , M. Panter
    • , R. D. Parsons
    • , C. Perennes
    • , P.-O. Petrucci
    • , B. Peyaud
    • , Q. Piel
    • , S. Pita
    • , V. Poireau
    • , A. Priyana Noel
    • , D. A. Prokhorov
    • , H. Prokoph
    • , G. Pühlhofer
    • , M. Punch
    • , A. Quirrenbach
    • , S. Raab
    • , R. Rauth
    • , A. Reimer
    • , O. Reimer
    • , Q. Remy
    • , M. Renaud
    • , F. Rieger
    • , L. Rinchiuso
    • , C. Romoli
    • , G. Rowell
    • , B. Rudak
    • , E. Ruiz-Velasco
    • , V. Sahakian
    • , S. Saito
    • , D. A. Sanchez
    • , A. Santangelo
    • , M. Sasaki
    • , R. Schlickeiser
    • , F. Schüssler
    • , A. Schulz
    • , H. M. Schutte
    • , U. Schwanke
    • , S. Schwemmer
    • , M. Seglar-Arroyo
    • , M. Senniappan
    • , A. S. Seyffert
    • , N. Shafi
    • , K. Shiningayamwe
    • , R. Simoni
    • , A. Sinha
    • , H. Sol
    • , A. Specovius
    • , M. Spir-Jacob
    • , Ł. Stawarz
    • , R. Steenkamp
    • , C. Stegmann
    • , C. Steppa
    • , T. Takahashi
    • , T. Tavernier
    • , A. M. Taylor
    • , R. Terrier
    • , D. Tiziani
    • , M. Tluczykont
    • , C. Trichard
    • , M. Tsirou
    • , N. Tsuji
    • , R. Tuffs
    • , Y. Uchiyama
    • , D. J. van der Walt
    • , C. van Eldik
    • , C. van Rensburg
    • , B. van Soelen
    • , G. Vasileiadis
    • , J. Veh
    • , C. Venter
    • , P. Vincent
    • , J. Vink
    • , F. Voisin
    • , H. J. Völk
    • , T. Vuillaume
    • , Z. Wadiasingh
    • , S. J. Wagner
    • , R. White
    • , A. Wierzcholska
    • , R. Yang
    • , H. Yoneda
    • , M. Zacharias
    • , R. Zanin
    • , A. A. Zdziarski
    • , A. Zech
    • , A. Ziegler
    • , J. Zorn
    •  & N. Żywucka
    Nature 582, 356-359
  • Research |

    A periodicity of roughly 16 days is detected for the fast radio burst 180916.J0158+65, suggesting that the burst arises from a periodically modulated mechanism instead of a cataclysmic or sporadic process.

    • M. Amiri
    • , B. C. Andersen
    • , K. M. Bandura
    • , M. Bhardwaj
    • , P. J. Boyle
    • , C. Brar
    • , P. Chawla
    • , T. Chen
    • , J. F. Cliche
    • , D. Cubranic
    • , M. Deng
    • , N. T. Denman
    • , M. Dobbs
    • , F. Q. Dong
    • , M. Fandino
    • , E. Fonseca
    • , B. M. Gaensler
    • , U. Giri
    • , D. C. Good
    • , M. Halpern
    • , J. W. T. Hessels
    • , A. S. Hill
    • , C. Höfer
    • , A. Josephy
    • , J. W. Kania
    • , R. Karuppusamy
    • , V. M. Kaspi
    • , A. Keimpema
    • , F. Kirsten
    • , T. L. Landecker
    • , D. A. Lang
    • , C. Leung
    • , D. Z. Li
    • , H.-H. Lin
    • , B. Marcote
    • , K. W. Masui
    • , R. Mckinven
    • , J. Mena-Parra
    • , M. Merryfield
    • , D. Michilli
    • , N. Milutinovic
    • , A. Mirhosseini
    • , A. Naidu
    • , L. B. Newburgh
    • , C. Ng
    • , K. Nimmo
    • , Z. Paragi
    • , C. Patel
    • , U.-L. Pen
    • , T. Pinsonneault-Marotte
    • , Z. Pleunis
    • , M. Rafiei-Ravandi
    • , M. Rahman
    • , S. M. Ransom
    • , A. Renard
    • , P. Sanghavi
    • , P. Scholz
    • , J. R. Shaw
    • , K. Shin
    • , S. R. Siegel
    • , S. Singh
    • , R. J. Smegal
    • , K. M. Smith
    • , I. H. Stairs
    • , S. P. Tendulkar
    • , I. Tretyakov
    • , K. Vanderlinde
    • , H. Wang
    • , X. Wang
    • , D. Wulf
    • , P. Yadav
    •  & A. V. Zwaniga
    Nature 582, 351-355
  • Research
    | Open Access

    The cores of neutron stars could be made of hadronic matter or quark matter. By combining first-principles calculations with observational data, evidence for the presence of quark matter in neutron star cores is found.

    • Eemeli Annala
    • , Tyler Gorda
    • , Aleksi Kurkela
    • , Joonas Nättilä
    •  & Aleksi Vuorinen
  • Research
    | Open Access

    Independently measuring the tidal deformability and the fundamental oscillation mode (fmode) frequency enables tests of gravity and the nature of compact binaries. Here, the authors constrain the f-mode frequencies of the companions of GW170817 from direct measurements, demonstrating gravitational wave asteroseismology with binary inspiral signals alone.

    • Geraint Pratten
    • , Patricia Schmidt
    •  & Tanja Hinderer

News and Comment

  • News and Views |

    The LIGO/Virgo collaboration recently announced the detection of an unusual compact binary merger including either the most massive neutron star or the least massive black hole known. The formation path of such a binary system is still up for debate.

    • Mohammadtaher Safarzadeh
    Nature Astronomy 4, 735-736
  • Comments and Opinion |

    On 3 May 2020 the Greek and extended international astronomy community lost Professor Emeritus John Hugh Seiradakis, a highly impactful, wide-reaching researcher and educator, and mentor to generations of students.

    • Vassiliki Kalogera
    •  & Michael Kramer
    Nature Astronomy 4, 639-640
  • Editorial |

    On the anniversary of ROSAT’s launch, we reflect on the relevance and promise of X-ray observations in all fields of astronomy. Properly laying out a plan for the future of the field will allow it to continue flourishing.