Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR
The transient black hole X-ray binary MAXI J1803−298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral characteristics of a hard-state accreting black hole. We report on the res...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acc65c |
| _version_ | 1797698590568611840 |
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| author | Benjamin M. Coughenour John A. Tomsick Guglielmo Mastroserio James F. Steiner Riley M. T. Connors Jiachen Jiang Jeremy Hare Aarran W. Shaw Renee M. Ludlam A. C. Fabian Javier A. García Joel B. Coley |
| author_facet | Benjamin M. Coughenour John A. Tomsick Guglielmo Mastroserio James F. Steiner Riley M. T. Connors Jiachen Jiang Jeremy Hare Aarran W. Shaw Renee M. Ludlam A. C. Fabian Javier A. García Joel B. Coley |
| author_sort | Benjamin M. Coughenour |
| collection | DOAJ |
| description | The transient black hole X-ray binary MAXI J1803−298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral characteristics of a hard-state accreting black hole. We report on the results of a Target-of-Opportunity observation with NuSTAR obtained near the peak outburst flux beginning on 2021 May 13, after the source had transitioned into an intermediate state. MAXI J1803−298 is variable across the observation, which we investigate by extracting spectral and timing products separately for different levels of flux throughout the observation. Our timing analysis reveals two distinct potential quasiperiodic oscillations (QPOs) which are not harmonically related at 5.4 ± 0.2 Hz and 9.4 ± 0.3 Hz, present only during periods of lower flux. With clear relativistic reflection signatures detected in the source spectrum, we applied several different reflection models to the spectra of MAXI J1803−298. Here we report our results, utilizing high-density reflection models to constrain the disk geometry, and assess changes in the spectrum dependent on the source flux. With a standard broken power-law emissivity, we find a near-maximal spin for the black hole, and we are able to constrain the inclination of the accretion disk at 75° ± 2°, which is expected for a source that has shown periodic absorption dips. We also significantly detect a narrow absorption feature at 6.91 ± 0.06 keV with an equivalent width between 4 and 9 eV, which we interpret as the signature of a disk wind. |
| first_indexed | 2024-03-12T03:56:23Z |
| format | Article |
| id | doaj.art-12ba2eb058d14daf9cea464d3c0fa86b |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:56:23Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-12ba2eb058d14daf9cea464d3c0fa86b2023-09-03T11:54:01ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194927010.3847/1538-4357/acc65cReflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTARBenjamin M. Coughenour0https://orcid.org/0000-0003-0870-6465John A. Tomsick1https://orcid.org/0000-0001-5506-9855Guglielmo Mastroserio2https://orcid.org/0000-0003-4216-7936James F. Steiner3https://orcid.org/0000-0002-5872-6061Riley M. T. Connors4https://orcid.org/0000-0002-8908-759XJiachen Jiang5https://orcid.org/0000-0002-9639-4352Jeremy Hare6https://orcid.org/0000-0002-8548-482XAarran W. Shaw7https://orcid.org/0000-0002-8808-520XRenee M. Ludlam8https://orcid.org/0000-0002-8961-939XA. C. Fabian9https://orcid.org/0000-0002-9378-4072Javier A. García10https://orcid.org/0000-0003-3828-2448Joel B. Coley11https://orcid.org/0000-0001-7532-8359Space Sciences Laboratory, University of California , Berkeley, 7 Gauss Way, Berkeley, CA 94720-7450, USA ; coughenour@berkeley.eduSpace Sciences Laboratory, University of California , Berkeley, 7 Gauss Way, Berkeley, CA 94720-7450, USA ; coughenour@berkeley.eduCahill Center for Astronomy and Astrophysics, California Institute of Technology , 1216 E California Blvd, Pasadena, CA 91125, USACenter for Astrophysics, Harvard & Smithsonian , 60 Garden St, Cambridge, MA 02138, USADepartment of Physics, Villanova University , 800 E Lancaster Avenue, Villanova, PA 19085, USAInstitute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UKNASA Goddard Space Flight Center , Greenbelt, MD 20771, USADepartment of Physics, University of Nevada , Reno, NV 89557, USADepartment of Physics and Astronomy, Wayne State University , 666 W Hancock, Detroit, MI 48201, USAInstitute of Astronomy, University of Cambridge , Madingley Road, Cambridge CB3 0HA, UKCahill Center for Astronomy and Astrophysics, California Institute of Technology , 1216 E California Blvd, Pasadena, CA 91125, USADepartment of Physics and Astronomy, Howard University , Washington, DC 20059, USA; CRESST/Code 661 Astroparticle Physics Laboratory, NASA Goddard Space Flight Center , Greenbelt Rd., MD 20771, USAThe transient black hole X-ray binary MAXI J1803−298 was discovered on 2021 May 1, as it went into outburst from a quiescent state. As the source rose in flux it showed periodic absorption dips and fit the timing and spectral characteristics of a hard-state accreting black hole. We report on the results of a Target-of-Opportunity observation with NuSTAR obtained near the peak outburst flux beginning on 2021 May 13, after the source had transitioned into an intermediate state. MAXI J1803−298 is variable across the observation, which we investigate by extracting spectral and timing products separately for different levels of flux throughout the observation. Our timing analysis reveals two distinct potential quasiperiodic oscillations (QPOs) which are not harmonically related at 5.4 ± 0.2 Hz and 9.4 ± 0.3 Hz, present only during periods of lower flux. With clear relativistic reflection signatures detected in the source spectrum, we applied several different reflection models to the spectra of MAXI J1803−298. Here we report our results, utilizing high-density reflection models to constrain the disk geometry, and assess changes in the spectrum dependent on the source flux. With a standard broken power-law emissivity, we find a near-maximal spin for the black hole, and we are able to constrain the inclination of the accretion disk at 75° ± 2°, which is expected for a source that has shown periodic absorption dips. We also significantly detect a narrow absorption feature at 6.91 ± 0.06 keV with an equivalent width between 4 and 9 eV, which we interpret as the signature of a disk wind.https://doi.org/10.3847/1538-4357/acc65cLow-mass x-ray binary starsX-ray binary starsStellar mass black holesAccretionX-ray transient sourcesX-ray sources |
| spellingShingle | Benjamin M. Coughenour John A. Tomsick Guglielmo Mastroserio James F. Steiner Riley M. T. Connors Jiachen Jiang Jeremy Hare Aarran W. Shaw Renee M. Ludlam A. C. Fabian Javier A. García Joel B. Coley Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR The Astrophysical Journal Low-mass x-ray binary stars X-ray binary stars Stellar mass black holes Accretion X-ray transient sources X-ray sources |
| title | Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR |
| title_full | Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR |
| title_fullStr | Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR |
| title_full_unstemmed | Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR |
| title_short | Reflection and Timing Study of the Transient Black Hole X-Ray Binary MAXI J1803-298 with NuSTAR |
| title_sort | reflection and timing study of the transient black hole x ray binary maxi j1803 298 with nustar |
| topic | Low-mass x-ray binary stars X-ray binary stars Stellar mass black holes Accretion X-ray transient sources X-ray sources |
| url | https://doi.org/10.3847/1538-4357/acc65c |
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