SEARCH for GAMMA-RAY EMISSION from AE AQUARII with SEVEN YEARS of FERMI LAT OBSERVATIONS

Jian Li; Diego F. Torres; Nanda Rea; Emma De Oña Wilhelmi; Alessandro Papitto; Xian Hou; Christopher W. Mauche

doi:10.3847/0004-637X/832/1/35

SEARCH for GAMMA-RAY EMISSION from AE AQUARII with SEVEN YEARS of FERMI LAT OBSERVATIONS

Jian Li, Diego F. Torres, Nanda Rea, Emma De Oña Wilhelmi, Alessandro Papitto, Xian Hou, Christopher W. Mauche

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Abstract

© 2016. The American Astronomical Society. All rights reserved. AE Aquarii (AE Aqr) is a cataclysmic binary hosting one of the fastest rotating (Pspin = 33.08 s) white dwarfs (WDs) known. Based on seven years of Fermi Large Area Telescope (LAT) Pass 8 data, we report on a deep search for gamma-ray emission from AE Aqr. Using X-ray observations from ASCA, XMM-Newton, Chandra, Swift, Suzaku, and NuSTAR, spanning 20 years, we substantially extend and improve the spin ephemeris of AE Aqr. Using this ephemeris, we searched for gamma-ray pulsations at the spin period of the WD. No gamma-ray pulsations were detected above 3δsignificance. Neither phase-averaged gamma-ray emission nor gamma-ray variability of AE Aqr is detected by Fermi LAT. We impose the most restrictive upper limit to the gamma-ray flux from AE Aqr to date: 1.3 × 10-12 erg cm-2 s-1 in the 100 MeV-300 GeV energy range, providing constraints on models.

Original language	English
Article number	35
Journal	Astrophysical Journal
Volume	832
Issue number	1
DOIs	https://doi.org/10.3847/0004-637X/832/1/35
Publication status	Published - 20 Nov 2016

Keywords

gamma rays: stars
novae, cataclysmic variables
X-rays: individual (AE Aquarii)

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@article{505288d167a14048bb40ec4f57143594,

title = "SEARCH for GAMMA-RAY EMISSION from AE AQUARII with SEVEN YEARS of FERMI LAT OBSERVATIONS",

abstract = "{\textcopyright} 2016. The American Astronomical Society. All rights reserved. AE Aquarii (AE Aqr) is a cataclysmic binary hosting one of the fastest rotating (Pspin = 33.08 s) white dwarfs (WDs) known. Based on seven years of Fermi Large Area Telescope (LAT) Pass 8 data, we report on a deep search for gamma-ray emission from AE Aqr. Using X-ray observations from ASCA, XMM-Newton, Chandra, Swift, Suzaku, and NuSTAR, spanning 20 years, we substantially extend and improve the spin ephemeris of AE Aqr. Using this ephemeris, we searched for gamma-ray pulsations at the spin period of the WD. No gamma-ray pulsations were detected above 3δsignificance. Neither phase-averaged gamma-ray emission nor gamma-ray variability of AE Aqr is detected by Fermi LAT. We impose the most restrictive upper limit to the gamma-ray flux from AE Aqr to date: 1.3 × 10-12 erg cm-2 s-1 in the 100 MeV-300 GeV energy range, providing constraints on models.",

keywords = "gamma rays: stars, novae, cataclysmic variables, X-rays: individual (AE Aquarii)",

author = "Jian Li and Torres, {Diego F.} and Nanda Rea and Wilhelmi, {Emma De O{\~n}a} and Alessandro Papitto and Xian Hou and Mauche, {Christopher W.}",

year = "2016",

month = nov,

day = "20",

doi = "10.3847/0004-637X/832/1/35",

language = "English",

volume = "832",

journal = "Astrophysical Journal",

issn = "0004-637X",

number = "1",

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TY - JOUR

T1 - SEARCH for GAMMA-RAY EMISSION from AE AQUARII with SEVEN YEARS of FERMI LAT OBSERVATIONS

AU - Li, Jian

AU - Torres, Diego F.

AU - Rea, Nanda

AU - Wilhelmi, Emma De Oña

AU - Papitto, Alessandro

AU - Hou, Xian

AU - Mauche, Christopher W.

PY - 2016/11/20

Y1 - 2016/11/20

N2 - © 2016. The American Astronomical Society. All rights reserved. AE Aquarii (AE Aqr) is a cataclysmic binary hosting one of the fastest rotating (Pspin = 33.08 s) white dwarfs (WDs) known. Based on seven years of Fermi Large Area Telescope (LAT) Pass 8 data, we report on a deep search for gamma-ray emission from AE Aqr. Using X-ray observations from ASCA, XMM-Newton, Chandra, Swift, Suzaku, and NuSTAR, spanning 20 years, we substantially extend and improve the spin ephemeris of AE Aqr. Using this ephemeris, we searched for gamma-ray pulsations at the spin period of the WD. No gamma-ray pulsations were detected above 3δsignificance. Neither phase-averaged gamma-ray emission nor gamma-ray variability of AE Aqr is detected by Fermi LAT. We impose the most restrictive upper limit to the gamma-ray flux from AE Aqr to date: 1.3 × 10-12 erg cm-2 s-1 in the 100 MeV-300 GeV energy range, providing constraints on models.

AB - © 2016. The American Astronomical Society. All rights reserved. AE Aquarii (AE Aqr) is a cataclysmic binary hosting one of the fastest rotating (Pspin = 33.08 s) white dwarfs (WDs) known. Based on seven years of Fermi Large Area Telescope (LAT) Pass 8 data, we report on a deep search for gamma-ray emission from AE Aqr. Using X-ray observations from ASCA, XMM-Newton, Chandra, Swift, Suzaku, and NuSTAR, spanning 20 years, we substantially extend and improve the spin ephemeris of AE Aqr. Using this ephemeris, we searched for gamma-ray pulsations at the spin period of the WD. No gamma-ray pulsations were detected above 3δsignificance. Neither phase-averaged gamma-ray emission nor gamma-ray variability of AE Aqr is detected by Fermi LAT. We impose the most restrictive upper limit to the gamma-ray flux from AE Aqr to date: 1.3 × 10-12 erg cm-2 s-1 in the 100 MeV-300 GeV energy range, providing constraints on models.

KW - gamma rays: stars

KW - novae, cataclysmic variables

KW - X-rays: individual (AE Aquarii)

U2 - 10.3847/0004-637X/832/1/35

DO - 10.3847/0004-637X/832/1/35

M3 - Article

VL - 832

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

IS - 1

M1 - 35

ER -