A dataset provided by the European Space Agency

Name: Mapping the wind and accretion structure in HMXBs using Vela X-1
Published: 2020-05-24T22:00:00Z

Proposal ID	084189
Title	Mapping the wind and accretion structure in HMXBs using Vela X-1
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0841890201
DOI	https://doi.org/10.5270/esa-0lb1fyk
Principal Investigator, PI	Dr Victoria Grinberg
Abstract	We propose a 100 ks XMM-Newton observation with simultaneous NuSTAR coverage ofthe wind-accreting HMXB Vela X-1 at orbital phase = 0.35-0.55, when we expectthe largest changes in absorption as the accretion wake starts to overlap ourline of sight. It will allow us to map the wind and accretion structure in thesystem, in particularly to trace the wakes, study the clumpiness of the windand its ionization structure and investigate the location of the reprocessingsites in the system. We will additionally be able to illuminate the propertiesof the accretion columns through variability studies of the cyclotron resonancescattering features and pulse-phase resolved spectroscopy and to investigatethe origin of the soft excess.
Publications	Common patterns in pulse profiles of high-mass X-ray binaries \|Alonso-Hernu00e1ndez J. Fu00fcrst F. et al. \| A&A \| 662-62 \| 2022 \| 2022A&A...662A..62A \| http://ui.adsabs.harvard.edu/#abs/2022A&A...662A..62A Discovery of a radio-emitting neutron star with an ultra-long spin period of 76 s \|Caleb Manisha Heywood Ian et al. \| NatAs \| 6-828 \| 2022 \| 2022NatAs...6..828C \| http://ui.adsabs.harvard.edu/#abs/2022NatAs...6..828C Observing the onset of the accretion wake in Vela X-1 \|Diez C. M. Grinberg V. et al. \| A&A \| 674-147 \| 2023 \| 2023A&A...674A.147D \| http://ui.adsabs.harvard.edu/#abs/2023A&A...674A.147D A NICER Viewing Angle on the Accretion Stream of Vela X-1 \|Rahin Roi Behar Ehud \| ApJ \| 950-170 \| 2023 \| 2023ApJ...950..170R \| http://ui.adsabs.harvard.edu/#abs/2023ApJ...950..170R
Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2019-05-03T21:14:00Z/2019-05-05T05:09:00Z
Version	19.17_20220121_1250
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2020-05-24T22:00:00Z
Last Update	2025-01-27
Keywords	"orbital phase", "nustar coverage", "ionization structure", "cyclotron resonance scattering", "xmm newton", "reprocessing sites", "XMM-Newton", "accretion wake starts", "accretion columns", "NuSTAR", "vela x", "accretion structure", "XMM", "soft excess"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Victoria Grinberg, 2020, 'Mapping the wind and accretion structure in HMXBs using Vela X-1', 19.17_20220121_1250, European Space Agency, https://doi.org/10.5270/esa-0lb1fyk