On the spin modulated circular polarization from the intermediate polars NY Lup and IGR J15094-6649

Stephen B. Potter; Encarni Romero-Colmenero; Marissa Kotze; Ewald Zietsman; O. W. Butters; Nikki Pekeur; David A. H. Buckley

doi:10.1111/j.1365-2966.2011.20232.x

On the spin modulated circular polarization from the intermediate polars NY Lup and IGR J15094-6649

Stephen B. Potter^*, Encarni Romero-Colmenero, Marissa Kotze, Ewald Zietsman, O. W. Butters, Nikki Pekeur, David A. H. Buckley

^*Corresponding author for this work

Bristol Medical School (PHS)

Research output: Contribution to journal › Article (Academic Journal) › peer-review

14 Citations (Scopus)

Abstract

We report on high-time-resolution, high-signal-to-noise ratio (S/N), photopolarimetry of the intermediate polars NY Lup and IGR J150946649. Our observations confirm the detection and colour dependence of circular polarization from NY Lup and additionally show a clear white dwarf, spin modulated signal. From our new high-S/N photometry, we have unambiguously detected wavelength-dependent spin and beat periods and harmonics thereof. IGR J150946649 is also discovered to have a particularly strong spin modulated circularly polarized signal. It appears double peaked through the I filter and single peaked through the B filter, consistent with cyclotron emission from a white dwarf with a relatively strong magnetic field.

Original language	English
Pages (from-to)	2596-2602
Number of pages	7
Journal	Monthly Notices of the Royal Astronomical Society
Volume	420
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2966.2011.20232.x
Publication status	Published - Mar 2012

Keywords

accretion, accretion discs
methods: analytical
techniques: polarimetric
binaries: close
novae, cataclysmic variables
X-rays: stars
MAGNETIC CATACLYSMIC VARIABLES
X-RAY EMISSION
WHITE-DWARFS
1RXS J154814.5-452845
OPTICAL OBSERVATIONS
1WGA J1958.2+3232
DISCOVERY
STARS
SPECTROSCOPY
CYCLOTRON

Access to Document

10.1111/j.1365-2966.2011.20232.x

Handle.net

Persistent link

Cite this

@article{ae5d7c84799641dda48eac9e916d2d28,

title = "On the spin modulated circular polarization from the intermediate polars NY Lup and IGR J15094-6649",

abstract = "We report on high-time-resolution, high-signal-to-noise ratio (S/N), photopolarimetry of the intermediate polars NY Lup and IGR J150946649. Our observations confirm the detection and colour dependence of circular polarization from NY Lup and additionally show a clear white dwarf, spin modulated signal. From our new high-S/N photometry, we have unambiguously detected wavelength-dependent spin and beat periods and harmonics thereof. IGR J150946649 is also discovered to have a particularly strong spin modulated circularly polarized signal. It appears double peaked through the I filter and single peaked through the B filter, consistent with cyclotron emission from a white dwarf with a relatively strong magnetic field.",

keywords = "accretion, accretion discs, methods: analytical, techniques: polarimetric, binaries: close, novae, cataclysmic variables, X-rays: stars, MAGNETIC CATACLYSMIC VARIABLES, X-RAY EMISSION, WHITE-DWARFS, 1RXS J154814.5-452845, OPTICAL OBSERVATIONS, 1WGA J1958.2+3232, DISCOVERY, STARS, SPECTROSCOPY, CYCLOTRON",

author = "Potter, \{Stephen B.\} and Encarni Romero-Colmenero and Marissa Kotze and Ewald Zietsman and Butters, \{O. W.\} and Nikki Pekeur and Buckley, \{David A. H.\}",

year = "2012",

month = mar,

doi = "10.1111/j.1365-2966.2011.20232.x",

language = "English",

volume = "420",

pages = "2596--2602",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - On the spin modulated circular polarization from the intermediate polars NY Lup and IGR J15094-6649

AU - Potter, Stephen B.

AU - Romero-Colmenero, Encarni

AU - Kotze, Marissa

AU - Zietsman, Ewald

AU - Butters, O. W.

AU - Pekeur, Nikki

AU - Buckley, David A. H.

PY - 2012/3

Y1 - 2012/3

N2 - We report on high-time-resolution, high-signal-to-noise ratio (S/N), photopolarimetry of the intermediate polars NY Lup and IGR J150946649. Our observations confirm the detection and colour dependence of circular polarization from NY Lup and additionally show a clear white dwarf, spin modulated signal. From our new high-S/N photometry, we have unambiguously detected wavelength-dependent spin and beat periods and harmonics thereof. IGR J150946649 is also discovered to have a particularly strong spin modulated circularly polarized signal. It appears double peaked through the I filter and single peaked through the B filter, consistent with cyclotron emission from a white dwarf with a relatively strong magnetic field.

AB - We report on high-time-resolution, high-signal-to-noise ratio (S/N), photopolarimetry of the intermediate polars NY Lup and IGR J150946649. Our observations confirm the detection and colour dependence of circular polarization from NY Lup and additionally show a clear white dwarf, spin modulated signal. From our new high-S/N photometry, we have unambiguously detected wavelength-dependent spin and beat periods and harmonics thereof. IGR J150946649 is also discovered to have a particularly strong spin modulated circularly polarized signal. It appears double peaked through the I filter and single peaked through the B filter, consistent with cyclotron emission from a white dwarf with a relatively strong magnetic field.

KW - accretion, accretion discs

KW - methods: analytical

KW - techniques: polarimetric

KW - binaries: close

KW - novae, cataclysmic variables

KW - X-rays: stars

KW - MAGNETIC CATACLYSMIC VARIABLES

KW - X-RAY EMISSION

KW - WHITE-DWARFS

KW - 1RXS J154814.5-452845

KW - OPTICAL OBSERVATIONS

KW - 1WGA J1958.2+3232

KW - DISCOVERY

KW - STARS

KW - SPECTROSCOPY

KW - CYCLOTRON

U2 - 10.1111/j.1365-2966.2011.20232.x

DO - 10.1111/j.1365-2966.2011.20232.x

M3 - Article (Academic Journal)

SN - 0035-8711

VL - 420

SP - 2596

EP - 2602

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

On the spin modulated circular polarization from the intermediate polars NY Lup and IGR J15094-6649

Abstract

Keywords

Access to Document

Handle.net

Fingerprint

Cite this