Black hole lightning due to particle acceleration at subhorizon scales
Abstrak
Supermassive black holes with masses of millions to billions of solar masses are commonly found in the centers of galaxies. Astronomers seek to image jet formation using radio interferometry but still suffer from insufficient angular resolution. An alternative method to resolve small structures is to measure the time variability of their emission. Here we report on gamma-ray observations of the radio galaxy IC 310 obtained with the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescopes, revealing variability with doubling time scales faster than 4.8 min. Causality constrains the size of the emission region to be smaller than 20% of the gravitational radius of its central black hole. We suggest that the emission is associated with pulsar-like particle acceleration by the electric field across a magnetospheric gap at the base of the radio jet. Gamma rays that vary on a several-minute time scale suggest an origin within a supermassive black hole’s event horizon. Timing tells the structure of the unseen Nothing can move faster than the speed of light, but some gamma rays seem to break that rule. Powerful jets that balance the angular momentum of accreting black holes are difficult to discern in images, so astronomers often resort to timing their emission to reveal the physics at work. Aleksić et al. found that gamma rays from the active galaxy IC 310 varied faster than the time required for light to cross the event horizon of the supermassive black hole at its nucleus. Particle acceleration at the base of the jet may enable this apparent speed, adding a piece to the puzzle of how jets form at supermassive black holes. Science, this issue p. 1080
Penulis (267)
M. C. J. Aleksi'c
S. Ansoldi
L. A. Antonelli
P. Antoranz
A. Babić
P. Bangale
J. Barrio
J. González
W. Bednarek
E. Bernardini
B. Biasuzzi
A. Biland
O. Blanch
S. Bonnefoy
G. Bonnoli
F. Borracci
T. Bretz
E. Carmona
A. Carosi
P. Colin
E. Colombo
J. Contreras
J. Cortina
S. Covino
P. D. Vela
F. Dazzi
A. Angelis
G. Caneva
B. Lotto
E. O. Wilhelmi
C. Mendez
D. Prester
D. Dorner
M. Doro
S. Einecke
D. Eisenacher
D. Elsaesser
M. Fonseca
L. Font
K. Frantzen
C. Fruck
D. Galindo
R. G. López
M. Garczarczyk
D. G. Terrats
M. Gaug
N. Godinovic
A. G. Muñoz
S. Gozzini
D. Hadasch
Y. Hanabata
M. Hayashida
J. Herrera
D. Hildebrand
J. Hose
D. Hrupec
W. Idec
V. Kadenius
H. Kellermann
K. Kodani
Y. Konno
J. Krause
H. Kubo
J. Kushida
A. Barbera
D. Lelas
N. Lewandowska
E. Lindfors
S. Lombardi
F. Longo
M. Lopez
R. López-Coto
A. López-Oramas
E. Lorenz
I. Lozano
M. Makariev
K. Mallot
G. Maneva
N. Mankuzhiyil
K. Mannheim
L. Maraschi
B. Marcote
M. Mariotti
M. Martínez
D. Mazin
U. Menzel
J. Miranda
R. Mirzoyan
A. Moralejo
P. Munar-Adrover
D. Nakajima
A. Niedźwiecki
K. Nilsson
K. Nishijima
K. Noda
R. Orito
A. Overkemping
S. Paiano
M. Palatiello
D. Paneque
R. Paoletti
J. Paredes
X. Paredes-Fortuny
M. Persic
J. Poutanen
P. Moroni
E. Prandini
I. Puljak
R. Reinthal
W. Rhode
M. Ribó
J. Rico
J. Garcia
S. Rugamer
T. Saito
K. Saito
K. Satalecka
V. Scalzotto
V. Scapin
C. Schultz
T. Schweizer
S. Shore
A. Sillanpaa
J. Sitarek
I. Šnidarić
D. Sobczynska
F. Spanier
V. Stamatescu
A. Stamerra
T. Steinbring
J. Storz
M. Strzys
L. Takalo
H. Takami
F. Tavecchio
P. Temnikov
T. Terzić
D. Tescaro
M. Teshima
J. Thaele
O. Tibolla
D. Torres
T. Toyama
A. Treves
M. Uellenbeck
P. Vogler
R. Zanin
M. Kadler
R. Schulz
E. Ros
U. Bach
F. Krauß
J. Wilms
Ifae
Campus Uab
E-08193 Bellaterra
Spain.
U. Udine
I. Trieste
I. Udine
Italy
I. I. F. Astrophysics
I-00136 Rome
U. Siena
I. Pisa
I-53100 Siena
Croatian Magic Consortium
Rudjer Boskovic Institute
University of Rijeka
University of Split
HR-10000 Zagreb
Croatia.
M. F. Physik
D-80805 Munchen
H Germany
U. Complutense
E. Madrid
Spain Inst. de Astrof'isica de Canarias
E. Laguna
Tenerife
University of L'od'z
PL-90236 Lodz
Poland.
D. Elektronen-Synchrotron
D. Zeuthen
E. Zurich
CH-8093 Zurich
Switzerland.
U. Wurzburg
D-97074 Wurzburg
Centro de Investigaciones Energ'eticas
Medioambientales y Tecnol'ogicas
Institute for Space Sciences
E. Barcelona
U. Padova
Infn
I-35131 Padova
Technische Universitat Dortmund
D. Dortmund
Unitat de F'isica de les Radiacions
Departament de F'isica
CERES-IEEC
U. Barcelona
U. Barcelona
Icc
IEEC-UB
E. Barcelona
Japanese Magic Consortium
D. Physics
Astronomy
Kyoto University
Japan.
Finnish Magic Consortium
T. Observatory
U. Turku
D. Physics
U. Oulu
Finland.
Inst. for Nucl. Research
Nucl. Energy
BG-1784 Sofia
Bulgaria.
U. Pisa
I. Pisa
Icrea
U. dell'Insubria
I. M. Bicocca
Como
I-22100 Como
now at Nasa Goddard Space Flight Center
Greenbelt
MD 20771
Usa
D. O. Astronomy
U. Maryland
College Park
MD 20742
N. C. E. P. F. D. Lausanne
Lausanne
Now at Institut fur Astro- und Teilchenphysik
L. Innsbruck
A. Innsbruck
M Austria
N. Eso
Turku
N. Division
Bhabha Atomic Research Centre
Mumbai 400085
India.
also at INAF-Trieste
now at School of ChemistryPhysics
U. Adelaide
Adelaide 5005
Australia.
Dr. Remeis-Sternwarte Bamberg
Astronomisches Institut der Universitat Erlangen-Nurnberg
Ecap
D. Bamberg
Max Planck Institut fur Radioastronomie
D. Bonn
German
Observatori Astronòmic
U. Valencia
E. Paterna
Valencia
D. D. I. Astrof'isica
E-46100 Burjassot
Akses Cepat
- Tahun Terbit
- 2014
- Bahasa
- en
- Total Sitasi
- 144×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1126/science.1256183
- Akses
- Open Access ✓