A MeerKAT survey of nearby nova-like cataclysmic variables
We present the results of MeerKAT radio observations of 11 nearby nova-like cataclysmic variables (CVs). We have detected radio emission from IM Eri, RW Sex, V3885 Sgr, and V603 Aql. While RW Sex, V3885 Sgr, and V603 Aql had been previously detected, this is the first reported radio detection of IM...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
OXFORD UNIV PRESS
2020
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| Subjects: | |
| Online Access: | http://purl.org/au-research/grants/arc/FT140101082 http://hdl.handle.net/20.500.11937/90033 |
| _version_ | 1848765315417112576 |
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| author | Hewitt, D.M. Pretorius, M.L. Woudt, P.A. Tremou, E. Miller-Jones, James Knigge, C. Castro Segura, N. Williams, D.R.A. Fender, R.P. Armstrong, R. Groot, P. Heywood, I. Horesh, A. Van Der Horst, A.J. Koerding, E. McBride, V.A. Mooley, K.P. Rowlinson, A. Stappers, B. Wijers, R.A.M.J. |
| author_facet | Hewitt, D.M. Pretorius, M.L. Woudt, P.A. Tremou, E. Miller-Jones, James Knigge, C. Castro Segura, N. Williams, D.R.A. Fender, R.P. Armstrong, R. Groot, P. Heywood, I. Horesh, A. Van Der Horst, A.J. Koerding, E. McBride, V.A. Mooley, K.P. Rowlinson, A. Stappers, B. Wijers, R.A.M.J. |
| author_sort | Hewitt, D.M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We present the results of MeerKAT radio observations of 11 nearby nova-like cataclysmic variables (CVs). We have detected radio emission from IM Eri, RW Sex, V3885 Sgr, and V603 Aql. While RW Sex, V3885 Sgr, and V603 Aql had been previously detected, this is the first reported radio detection of IM Eri. Our observations have doubled the sample of non-magnetic CVs with sensitive radio data. We observe that at our radio detection limits, a specific optical luminosity ≳2.2× 1018 erg s-1 Hz-1 (corresponding to MV ≲ 6.0) is required to produce a radio detection. We also observe that the X-ray and radio luminosities of our detected nova-like CVs are on an extension of the LXλ LR∼ 0.7 power law originally proposed for non-pulsating neutron star low-mass X-ray binaries. We find no other correlations between the radio emission and emission in other wavebands or any other system parameters for the existing sample of radio-detected non-magnetic CVs. We measure in-band (0.9-1.7 GHz) radio spectral indices that are consistent with reports from earlier work. Finally, we constructed broad spectral energy distributions for our sample from published multiwavelength data, and use them to place constraints on the mass transfer rates of these systems. |
| first_indexed | 2025-11-14T11:33:18Z |
| format | Journal Article |
| id | curtin-20.500.11937-90033 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:33:18Z |
| publishDate | 2020 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-900332023-02-07T04:10:19Z A MeerKAT survey of nearby nova-like cataclysmic variables Hewitt, D.M. Pretorius, M.L. Woudt, P.A. Tremou, E. Miller-Jones, James Knigge, C. Castro Segura, N. Williams, D.R.A. Fender, R.P. Armstrong, R. Groot, P. Heywood, I. Horesh, A. Van Der Horst, A.J. Koerding, E. McBride, V.A. Mooley, K.P. Rowlinson, A. Stappers, B. Wijers, R.A.M.J. Science & Technology Physical Sciences Astronomy & Astrophysics accretion, accretion discs stars: jets novae, cataclysmic variables white dwarfs radio continuum: stars X-rays: binaries X-RAY BINARIES NEUTRON-STAR RADIO-EMISSION SECONDARY STAR HARD-STATE MULTICOLOR ECLIPSE FLUX CORRELATION WHITE-DWARF UU-AQUARII OLD NOVAE We present the results of MeerKAT radio observations of 11 nearby nova-like cataclysmic variables (CVs). We have detected radio emission from IM Eri, RW Sex, V3885 Sgr, and V603 Aql. While RW Sex, V3885 Sgr, and V603 Aql had been previously detected, this is the first reported radio detection of IM Eri. Our observations have doubled the sample of non-magnetic CVs with sensitive radio data. We observe that at our radio detection limits, a specific optical luminosity ≳2.2× 1018 erg s-1 Hz-1 (corresponding to MV ≲ 6.0) is required to produce a radio detection. We also observe that the X-ray and radio luminosities of our detected nova-like CVs are on an extension of the LXλ LR∼ 0.7 power law originally proposed for non-pulsating neutron star low-mass X-ray binaries. We find no other correlations between the radio emission and emission in other wavebands or any other system parameters for the existing sample of radio-detected non-magnetic CVs. We measure in-band (0.9-1.7 GHz) radio spectral indices that are consistent with reports from earlier work. Finally, we constructed broad spectral energy distributions for our sample from published multiwavelength data, and use them to place constraints on the mass transfer rates of these systems. 2020 Journal Article http://hdl.handle.net/20.500.11937/90033 10.1093/mnras/staa1747 English http://purl.org/au-research/grants/arc/FT140101082 OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Physical Sciences Astronomy & Astrophysics accretion, accretion discs stars: jets novae, cataclysmic variables white dwarfs radio continuum: stars X-rays: binaries X-RAY BINARIES NEUTRON-STAR RADIO-EMISSION SECONDARY STAR HARD-STATE MULTICOLOR ECLIPSE FLUX CORRELATION WHITE-DWARF UU-AQUARII OLD NOVAE Hewitt, D.M. Pretorius, M.L. Woudt, P.A. Tremou, E. Miller-Jones, James Knigge, C. Castro Segura, N. Williams, D.R.A. Fender, R.P. Armstrong, R. Groot, P. Heywood, I. Horesh, A. Van Der Horst, A.J. Koerding, E. McBride, V.A. Mooley, K.P. Rowlinson, A. Stappers, B. Wijers, R.A.M.J. A MeerKAT survey of nearby nova-like cataclysmic variables |
| title | A MeerKAT survey of nearby nova-like cataclysmic variables |
| title_full | A MeerKAT survey of nearby nova-like cataclysmic variables |
| title_fullStr | A MeerKAT survey of nearby nova-like cataclysmic variables |
| title_full_unstemmed | A MeerKAT survey of nearby nova-like cataclysmic variables |
| title_short | A MeerKAT survey of nearby nova-like cataclysmic variables |
| title_sort | meerkat survey of nearby nova-like cataclysmic variables |
| topic | Science & Technology Physical Sciences Astronomy & Astrophysics accretion, accretion discs stars: jets novae, cataclysmic variables white dwarfs radio continuum: stars X-rays: binaries X-RAY BINARIES NEUTRON-STAR RADIO-EMISSION SECONDARY STAR HARD-STATE MULTICOLOR ECLIPSE FLUX CORRELATION WHITE-DWARF UU-AQUARII OLD NOVAE |
| url | http://purl.org/au-research/grants/arc/FT140101082 http://hdl.handle.net/20.500.11937/90033 |