High-energy Variability of PSR J1311-3430
Abstract
Here, we have studied the variability of the black-widow-type binary millisecond pulsar PSR J1311–3430 from optical to gamma-ray energies. We confirm evidence for orbital modulation in the weak off-pulse ≳200 MeV emission, with a peak at $${\phi }_{B}\approx 0.8$$, following pulsar inferior conjunction. The peak has a relatively hard spectrum, extending above ~1 GeV. XMM-Newton and Swift UV observations also show that this source's strong X-ray flaring activity is associated with optical/UV flares. With a duty cycle of ~7%–19%, this flaring is quite prominent with an apparent power-law intensity distribution. Flares are present at all orbital phases, with a slight preference for $${\phi }_{B}=0.5\mbox{--}0.7$$. We explore possible connections of these variabilities with the intrabinary shock and magnetic activity on the low-mass secondary.
- Authors:
-
[1];
[2];
[3];
[4]
- Chungbuk National Univ., Cheongju (Korea); Stanford Univ., Stanford, CA (United States)
- Stanford Univ., Stanford, CA (United States)
- George Mason Univ., Fairfax, VA (United States)
- Max-Planck-Institut fur Gravitationsphysik, Hannover (Germany); Leibniz Univ. Hannover, Hannover (Germany)
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1419643
- Grant/Contract Number:
- AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The Astrophysical Journal (Online)
- Additional Journal Information:
- Journal Name: The Astrophysical Journal (Online); Journal Volume: 850; Journal Issue: 1; Journal ID: ISSN 1538-4357
- Publisher:
- Institute of Physics (IOP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; binaries: close; gamma-rays: stars; pulsars: individual (PSR J1311-3430); X-rays: binaries
Citation Formats
An, Hongjun, Romani, Roger W., Johnson, Tyrel, Kerr, Matthew, and Clark, Colin J. High-energy Variability of PSR J1311-3430. United States: N. p., 2017.
Web. doi:10.3847/1538-4357/aa947f.
An, Hongjun, Romani, Roger W., Johnson, Tyrel, Kerr, Matthew, & Clark, Colin J. High-energy Variability of PSR J1311-3430. United States. https://doi.org/10.3847/1538-4357/aa947f
An, Hongjun, Romani, Roger W., Johnson, Tyrel, Kerr, Matthew, and Clark, Colin J. Tue .
"High-energy Variability of PSR J1311-3430". United States. https://doi.org/10.3847/1538-4357/aa947f. https://www.osti.gov/servlets/purl/1419643.
@article{osti_1419643,
title = {High-energy Variability of PSR J1311-3430},
author = {An, Hongjun and Romani, Roger W. and Johnson, Tyrel and Kerr, Matthew and Clark, Colin J.},
abstractNote = {Here, we have studied the variability of the black-widow-type binary millisecond pulsar PSR J1311–3430 from optical to gamma-ray energies. We confirm evidence for orbital modulation in the weak off-pulse ≳200 MeV emission, with a peak at ${\phi }_{B}\approx 0.8$, following pulsar inferior conjunction. The peak has a relatively hard spectrum, extending above ~1 GeV. XMM-Newton and Swift UV observations also show that this source's strong X-ray flaring activity is associated with optical/UV flares. With a duty cycle of ~7%–19%, this flaring is quite prominent with an apparent power-law intensity distribution. Flares are present at all orbital phases, with a slight preference for ${\phi }_{B}=0.5\mbox{--}0.7$. We explore possible connections of these variabilities with the intrabinary shock and magnetic activity on the low-mass secondary.},
doi = {10.3847/1538-4357/aa947f},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 850,
place = {United States},
year = {Tue Nov 21 00:00:00 EST 2017},
month = {Tue Nov 21 00:00:00 EST 2017}
}
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