Periodic variation in the water production of comet C/2001 Q4 (NEAT) observed with the Odin satellite

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Fältnamn	Indikatorer	Metadata
000		02553naa a2200409 4500
001		oai:research.chalmers.se:3136003f-2170-4822-84ad-c6d3fce7884f
003		SwePub
008		171008s2009 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://research.chalmers.se/publication/1114742 URI
040		a (SwePub)cth
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Biver, N.4 aut
245	1 0	a Periodic variation in the water production of comet C/2001 Q4 (NEAT) observed with the Odin satellite
264	1	c 2009
520		a Context: Comet C/2001 Q4 (NEAT) was extensively studied with the 1.1-m submillimetre telescope of the Odin satellite. The H2O line at 557 GHz was regularly observed from 6 March to 16 May 2004 and nearly continuously monitored during 3 periods between 26 April and 2 May 2004. Aims: This last set of data shows periodic variations in the line intensity, and we looked for characterising the long- and short-term behaviour of this comet. Methods: We used the variance ratio method and χ2 minimization to find the period of variation in the water production rate and simulations to infer its amplitude at the nucleus surface. Results: A 40% periodic variation in the water production rate is measured with a period of 0.816±0.004 day (19.58±0.1 h). The comet also exhibits a seasonal effect with a mean peak of outgassing around 2.7×1029 molec. s-1 taking place about 18 days before perihelion.
650	7	a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe
650	7	a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng
653		a astrochemistry
653		a submillimetre
653		a radio lines
653		a comets
653		a C/2001 Q4 (NEAT)
653		a solar system
700	1	a Bockelée-Morvan, D.4 aut
700	1	a Colom, P.4 aut
700	1	a Crovisier, J.4 aut
700	1	a Lecacheux, A.4 aut
700	1	a Frisk, U.4 aut
700	1	a Hjalmarson, Åke,d 1939u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)akehjalm
700	1	a Olberg, Michael,d 1956u Chalmers tekniska högskola,Chalmers University of Technology4 aut0 (Swepub:cth)olberg
700	1	a Sandqvist, Aa.4 aut
710	2	a Chalmers tekniska högskola4 org
773	0	t Astronomy and Astrophysicsg 501:1, s. 359-366q 501:1<359-366x 0004-6361x 1432-0746
856	4 8	u https://research.chalmers.se/publication/111474

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Av författaren/redakt...: Biver, N.; Bockelée-Morvan, ...; Colom, P.; Crovisier, J.; Lecacheux, A.; Frisk, U.; visa fler...; Hjalmarson, Åke, ...; Olberg, Michael, ...; Sandqvist, Aa.; visa färre...

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