Surface localization of gas sources on comet 67P/Churyumov-Gerasimenko based on DFMS/COPS data

Läuter, Matthias; Kramer, Tobias; Rubin, Martin; Altwegg, Kathrin (2018). Surface localization of gas sources on comet 67P/Churyumov-Gerasimenko based on DFMS/COPS data (In Press). Monthly notices of the Royal Astronomical Society, 483(1), pp. 852-861. Oxford University Press 10.1093/mnras/sty3103

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We reconstruct the temporal evolution of the source distribution for the four major gas species H₂O, CO₂, CO, and O₂ on the surface of comet 67P/Churyumov–Gerasimenko during its 2015 apparition. The analysis applies an inverse coma model and fits to data between 2014 August 6 and 2016 September 5 measured with the Double Focusing Mass Spectrometer (DFMS) of the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) and the COmet Pressure Sensor (COPS). The spatial distribution of gas sources with their temporal variation allows one to construct surface maps for gas emissions and to evaluate integrated production rates. For all species peak production rates and integrated production rates per orbit are evaluated separately for the Northern and Southern hemisphere. The nine most active emitting areas on the comet’s surface are defined and their correlation to emissions for each of the species is discussed.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute

UniBE Contributor:

Rubin, Martin and Altwegg, Kathrin

Subjects:

500 Science > 520 Astronomy
600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

0035-8711

Publisher:

Oxford University Press

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

12 Jun 2019 09:12

Last Modified:

22 Oct 2019 17:50

Publisher DOI:

10.1093/mnras/sty3103

BORIS DOI:

10.7892/boris.127034

URI:

https://boris.unibe.ch/id/eprint/127034

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