NICER, NuSTAR, and Swift-XRT observations of the Magnetar 1E 1841-045

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https://www.astronomerstelegram.org/?read=16802

Permanent Link

http://hdl.handle.net/11603/37868

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

Author/Creator

Author/Creator ORCID

https://orcid.org/0000-0002-7991-028X

Date

2024-09-01

Type of Work

articles
Text

Department

Program

Citation of Original Publication

Younes, G., C. -P. Hu, T. Enoto, K. C. Gendreau, Z. Arzoumanian, J. Hare, M. Ng, and Z. Wadiasingh. “NICER, NuSTAR, and Swift-XRT Observations of the Magnetar 1E 1841-045.” The Astronomer’s Telegram 16802 (September 1, 2024): 1. https://www.astronomerstelegram.org/?read=16802

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Subjects

Neutron Star
Soft Gamma-ray Repeater
Magnetar
Transient
Pulsar

Abstract

Since the reported bursting activity of the magnetar 1E 1841-045 with Swift-BAT (ATEL #16784), Fermi-GBM (ATEL #16786), and NICER (ATEL #16789), we have acquired more NICER observations of the target, covering the time period 2024 August 20 at 23:28 to 2024 August 31 at 10:58 UT, for a total exposure of 27.6 ks. Additionally, we acquired a NuSTAR Directors Discretionary Time observation starting on 2024 August 29 at 04:21 UT for a total exposure of approximately 50 ks. Lastly, we analyze the Swift-XRT photon counting mode observation acquired beginning 2024-08-22 at 03:52 UT for a total of 1.8 ks. The NICER monitoring shows that the source bursting activity has strongly diminished since August 20. We detect only two faint bursts in addition to the ones reported in ATEL #16789.