Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER
We present the discovery of eclipses in the X-ray light curves of the X-ray binary Swift J1858.6–0814. From these, we find an orbital period of P=76841.3+1.3−1.4 s (≈21.3 h) and an eclipse duration of tec=4098+17−18 s (≈1.14 h). We also find several absorption dips during the pre-eclipse phase. From...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/138228 |
| Aporte de: |
| id |
I19-R120-10915-138228 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Astronomía Ciencias Astronómicas accretion, accretion discs stars: neutron X-rays: binaries |
| spellingShingle |
Astronomía Ciencias Astronómicas accretion, accretion discs stars: neutron X-rays: binaries Buisson, D. J. K. Altamirano, Diego Armas Padilla, M. Arzoumanian, Z. Bult, Peter Castro Segura, N. Charles, P. A. Degenaar, Nathalie Diaz Trigo, M. van den Eijnden, J. Fogantini, Federico Adrián Gandhi, Poshak Gendreau, Keith C. Hare, Jonathon S. Homan, Jeroen Knigge, Christian Malacaria, Christian Mendez, Mariano Muñoz Darias, T. Ng, M. Özbey Arabacı, M. Remillard, Ron Strohmayer, Tod E. Tombesi, Francesco Tomsick, John A. Vincentelli, F. M. Walton, Dom Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| topic_facet |
Astronomía Ciencias Astronómicas accretion, accretion discs stars: neutron X-rays: binaries |
| description |
We present the discovery of eclipses in the X-ray light curves of the X-ray binary Swift J1858.6–0814. From these, we find an orbital period of P=76841.3+1.3−1.4 s (≈21.3 h) and an eclipse duration of tec=4098+17−18 s (≈1.14 h). We also find several absorption dips during the pre-eclipse phase. From the eclipse duration to orbital period ratio, the inclination of the binary orbit is constrained to i > 70°. The most likely range for the companion mass suggests that the inclination is likely to be closer to this value than 90. The eclipses are also consistent with earlier data, in which strong variability (‘flares’) and the long orbital period prevent clear detection of the period or eclipses. We also find that the bright flares occurred preferentially in the post-eclipse phase of the orbit, likely due to increased thickness at the disc-accretion stream interface preventing flares being visible during the pre-eclipse phase. This supports the notion that variable obscuration is responsible for the unusually strong variability in Swift J1858.6–0814. |
| format |
Articulo Articulo |
| author |
Buisson, D. J. K. Altamirano, Diego Armas Padilla, M. Arzoumanian, Z. Bult, Peter Castro Segura, N. Charles, P. A. Degenaar, Nathalie Diaz Trigo, M. van den Eijnden, J. Fogantini, Federico Adrián Gandhi, Poshak Gendreau, Keith C. Hare, Jonathon S. Homan, Jeroen Knigge, Christian Malacaria, Christian Mendez, Mariano Muñoz Darias, T. Ng, M. Özbey Arabacı, M. Remillard, Ron Strohmayer, Tod E. Tombesi, Francesco Tomsick, John A. Vincentelli, F. M. Walton, Dom |
| author_facet |
Buisson, D. J. K. Altamirano, Diego Armas Padilla, M. Arzoumanian, Z. Bult, Peter Castro Segura, N. Charles, P. A. Degenaar, Nathalie Diaz Trigo, M. van den Eijnden, J. Fogantini, Federico Adrián Gandhi, Poshak Gendreau, Keith C. Hare, Jonathon S. Homan, Jeroen Knigge, Christian Malacaria, Christian Mendez, Mariano Muñoz Darias, T. Ng, M. Özbey Arabacı, M. Remillard, Ron Strohmayer, Tod E. Tombesi, Francesco Tomsick, John A. Vincentelli, F. M. Walton, Dom |
| author_sort |
Buisson, D. J. K. |
| title |
Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| title_short |
Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| title_full |
Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| title_fullStr |
Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| title_full_unstemmed |
Dips and eclipses in the X-ray binary Swift J1858.6-0814 observed with NICER |
| title_sort |
dips and eclipses in the x-ray binary swift j1858.6-0814 observed with nicer |
| publishDate |
2021 |
| url |
http://sedici.unlp.edu.ar/handle/10915/138228 |
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