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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28451
Title: Searching for Jet Emission in LMXBs: A Polarimetric View
Authors: Baglio, Maria
D'AVANZO, Paolo 
CAMPANA, Sergio 
Russell, Dave
Issue Date: 2017
Journal: GALAXIES 
Number: 5
Issue: 4
First Page: 62
Abstract: We present results taken from a study aiming at detecting the emission from relativistic particles jets in neutron star-low mass X-ray binaries using optical polarimetric observations. First, we focus on a polarimetric study performed on the persistent LMXB 4U 0614+091. Once corrected for interstellar effects, we measured an intrinsic linear polarization in the r-band of ~3% at a 3σ confidence level. This is in-line with the observation of an infrared excess in the spectral energy distribution (SED) of the source, reported in a previous work, which the authors linked to the optically thin synchrotron emission of a jet. We then present a study performed on the transitional millisecond pulsar PSR J1023+0038 during quiescence. We measured a linear polarization of 1.09 ± 0.27% and 0.90 ± 0.17% in the V and R bands, respectively. The phase-resolved polarimetric curve of the source in the R-band reveals a hint of a sinusoidal modulation at the source orbital period. The NIR -optical SED of the system did not suggest the presence of a jet. We conclude that the optical linear polarization observed for PSR J1023+0038 is possibly due to Thomson scattering with electrons in the disc, as also suggested by the hint of the modulation of the R-band linear polarization at the system orbital period.
URI: http://hdl.handle.net/20.500.12386/28451
URL: https://www.mdpi.com/2075-4434/5/4/62
ISSN: 2075-4434
DOI: 10.3390/galaxies5040062
Bibcode ADS: 2017Galax...5...62B
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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