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Preprint article · Journal article

NICER Observation of the Temporal and Spectral Evolution of Swift J1818.0−1607: A Missing Link between Magnetars and Rotation-powered Pulsars

By Hu, Chin-Ping1; Begiçarslan, Beste4; Güver, Tolga4; Enoto, Teruaki1; Younes, George5; Sakamoto, Takanori6; Ray, Paul S.7; Strohmayer, Tod E.8; Guillot, Sebastien9; Arzoumanian, Zaven8; Palmer, David M.10; Gendreau, Keith C.8; Malacaria, C.8; Wadiasingh, Zorawar8; Jaisawal, Gaurava K.2,11; Majid, Walid A.3 ...and 6 more

From

RIKEN1

National Space Institute, Technical University of Denmark2

California Institute of Technology3

Istanbul University4

George Washington University5

Aoyama Gakuin University6

U.S. Naval Research Laboratory7

NASA Goddard Space Flight Center8

CNRS9

Los Alamos National Laboratory10

Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark11

...and 1 more

We report on the hard X-ray burst and the first ~100 days of NICER monitoring of the soft X-ray temporal and spectral evolution of the newly discovered magnetar Swift J1818.0−1607. The burst properties are typical of magnetars with a duration of T 90 = 10 ± 4 ms and a temperature of kT = 8.4 ± 0.7 keV.

The 2–8 keV pulse shows a broad, single-peak profile with a pulse fraction increasing with time from 30% to 43%.

Language: English
Publisher: American Astronomical Society
Year: 2020
Pages: 1
ISSN: 15384357 , 0004637x , 15384365 and 00670049
Types: Preprint article and Journal article
DOI: 10.3847/1538-4357/abb3c9
ORCIDs: 0000-0001-8551-2002 , 0000-0001-5072-8444 , 0000-0002-3531-9842 , 0000-0003-1244-3100 , 0000-0002-7991-028X , 0000-0001-6276-6616 , 0000-0002-5297-5278 , 0000-0001-7681-5845 , 0000-0002-6449-106X , 0000-0001-7128-0802 , 0000-0002-0380-0041 , 0000-0002-9249-0515 , Jaisawal, Gaurava K. and 0000-0002-4694-4221
Keywords

Magnetars Neutron stars Pulsars X-ray stars astro-ph.HE

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