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Change in Accretion Torque in the Binary Accreting Pulsar 4U 1626-67

Bildsten, Lars and Chakrabarty, Deepto and Chiu, John and Finger, Mark H. and Grunsfeld, John M. and Koh, Towsian and Prince, Thomas A. and Wilson, Robert (1994) Change in Accretion Torque in the Binary Accreting Pulsar 4U 1626-67. In: The Second Compton Symposium. AIP Conference Proceedings. No.304. American Institute of Physics , New York, NY, pp. 290-294.

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We describe two years of BATSE observations of the 7.66 s accreting pulsar 4U 1626-6i. Power spectral analysis and period folding techniques with the 1.024 s resolution DISCLA data froru the Large Area Detectors (LADs) have provided nearly continuous monitoring of 4U 1626-6i in the 20-60 ke V range. The long term frequency history of the source shows nearly constant spin-down at a rate of f ~ -7.4 x 10^(-13) s^(-2) , in contrast to the continuous spin-up {with f ~ 8.5 x^(-13) t 3 s- 2) observed previously. We discuss the implications of these results for accretion torque theories and compare this behavior to that of GX 1+4.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Chakrabarty, Deepto0000-0001-8804-8946
Prince, Thomas A.0000-0002-8850-3627
Additional Information:© 1994 American Institute of Physics. Published online 20 June 1994. We would like to acknowledge the significant contributions by the entire BATSE team at the NASA/Marshall Space Flight Center. This work is funded in part by NAGGV-1919, NAGW-2920, and NAG 5-1458, and a Lee A. DuBridge fellowship to L.B. funded by the Weingart Foundation.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANAG 5-1458
Lee A. DuBridge FellowshipUNSPECIFIED
Weingart FoundationUNSPECIFIED
Non-Subject Keywords:Binary Pulsars: Accretion, Binary Pulsars: X-Ray Pulsars
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1993-33
Series Name:AIP Conference Proceedings
Issue or Number:304
Record Number:CaltechAUTHORS:20140520-093937658
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45837
Deposited By: Deborah Miles
Deposited On:02 Jun 2014 01:15
Last Modified:10 Nov 2021 17:17

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