131 citations · 750 across the 24 of their papers we have counts for
24 papers
Molecular composition of comet 46P/Wirtanen from millimetre-wave spectroscopy
N. Biver, D. Bockelée-Morvan, J. Boissier +11
We present the results of a molecular survey of comet 46P/Wirtanen undertaken with the IRAM 30-m and NOEMA radio telescopes in December 2018. Observations at IRAM 30-m during the 1…
Design, operation and performance of the PAON4 prototype transit interferometer
R. Ansari, J. E Campagne, D. Charlet +14
PAON4 is an L-band (1250-1500 MHz) small interferometer operating in transit mode deployed at the Nançay observatory in France, designed as a prototype instrument for Intensity Map…
Progress in the Construction and Testing of the Tianlai Radio Interferometers
Santanu Das, Christopher J. Anderson, Reza Ansari +44
The Tianlai Pathfinder is designed to demonstrate the feasibility of using a wide field of view radio interferometers to map the density of neutral hydrogen in the Universe after t…
Comets at radio wavelengths
Jacques Crovisier, Dominique Bockelée-Morvan, Pierre Colom +1
Comets are considered as the most primitive objects in the Solar System. Their composition provides information on the composition of the primitive solar nebula, 4.6 Gyr ago. The r…
Isotopic ratios of H, C, N, O, and S in comets C/2012 F6 (Lemmon) and C/2014 Q2 (Lovejoy)
N. Biver, R. Moreno, D. Bockelée-Morvan +15
The apparition of bright comets C/2012 F6 (Lemmon) and C/2014 Q2 (Lovejoy) in March-April 2013 and January 2015, combined with the improved observational capabilities of submillime…
Ethyl alcohol and sugar in comet C/2014Q2 (Lovejoy)
Nicolas Biver, Dominique Bockelée-Morvan, Raphaël Moreno +7
The presence of numerous complex organic molecules (COMs; defined as those containing six or more atoms) around protostars shows that star formation is accompanied by an increase o…
OH and H2O maser variations in W33B
P. Colom, E. E. Lekht, M. I. Pashchenko +1
The active star-forming region W33B is a source of OH and H2O maser emission located in distinct zones around the central object. The aim was to obtain the complete Stokes pattern…
Complex organic molecules in comets C/2012 F6 (Lemmon) and C/2013 R1 (Lovejoy): detection of ethylene glycol and formamide
N. Biver, D. Bockelée-Morvan, V. Debout +9
A spectral survey in the 1 mm wavelength range was undertaken in the long-period comets C/2012 F6 (Lemmon) and C/2013 R1 (Lovejoy) using the 30 m telescope of the Institut de radio…
Gas and dust productions of comet 103P/Hartley 2 from millimetre observations: interpreting rotation-induced time variations
J. Boissier, D. Bockelée-Morvan, N. Biver +7
Comet 103P/Hartley 2 made a close approach to the Earth in October 2010. It was the target of an extensive observing campaign and was visited by the Deep Impact spacecraft (mission…
Millimetre continuum observations of comet C/2009 P1 (Garradd)
J. Boissier, D. Bockelée-Morvan, O. Groussin +7
Little is known about the physical properties of the nuclei of Oort cloud comets. Measuring the thermal emission of a nucleus is one of the few means for deriving its size and cons…
BAORadio: A digital pipeline for radio interferometry and 21 cm mapping of large scale structures
Réza Ansari, Jean-Eric Campagne, Pierre Colom +5
3D mapping of matter distribution in the universe through the 21 cm radio emission of atomic hydrogen HI is a complementary approach to optical surveys for the study of the Large S…
The Source of Maser Emission W33C (G12.8-0.2)
P. Colom, E. E. Lekht, M. I. Pashchenko +1
Results of observations of the maser sources toward the W33C region (G12.8-0.2) carried out on the 22-m radio telescope of the Pushchino Radio Astronomy Observatory in the 1.35-cm…
Observations of the 18-cm OH lines of comet 103P/Hartley 2 at Nançay in support to the EPOXI and Herschel missions
Jacques Crovisier, Pierre Colom, Nicolas Biver +2
The 18-cm radio lines of the OH radical were observed in comet 103P/Hartley 2 with the Nançay radio telescope in support to its flyby by the EPOXI mission and to observations with…
21 cm observation of LSS at z~1 Instrument sensitivity and foreground subtraction
R. Ansari, J. E. Campagne, P. Colom +6
Large Scale Structures (LSS) in the universe can be traced using the neutral atomic hydrogen HI through its 21cm emission. Such a 3D matter distribution map can be used to test the…
BAORadio : Cartographie 3D de la distribution de gaz H dans l'Univers
R. Ansari, J. E. Campagne, P. Colom +5
3D mapping of matter distribution in the universe through the 21 cm radio emission of atomic hydrogen is a complementary approach to optical surveys for the study of the Large Scal…
HESS J1943+213: a candidate extreme BL Lacertae object
H. E. S. S. Collaboration, :, A. Abramowski +200
We report on a newly detected point-like source, HESS J1943+213 located in the Galactic plane. This source coincides with an unidentified hard X-ray source IGR J19443+2117, which w…
Molecular investigations of comets C/2002 X5 (Kudo-Fujikawa), C/2002 V1 (NEAT), and C/2006 P1 (McNaught) at small heliocentric distances
N. Biver, D. Bockelée-Morvan, P. Colom +4
We present unique spectroscopic radio observations of comets C/2002 X5 (Kudo-Fujikawa), C/2002 V1 (NEAT), and C/2006 P1 (McNaught), which came within $r_h ~ 0.2 AU of the Sun in 20…
Earth-based detection of the millimetric thermal emission of the nucleus of comet 8P/Tuttle
J. Boissier, O. Groussin, L. Jorda +7
Little is known about the physical properties of cometary nuclei. Apart from space mission targets, measuring the thermal emission of a nucleus is one of the few means to derive it…
Interferometric imaging of carbon monoxide in comet C/1995 O1 (Hale-Bopp): evidence for a strong rotating jet
D. Bockelée-Morvan, F. Henry, N. Biver +6
Observations of the CO J(1-0) 115 GHz and J(2-1) 230 GHz lines in comet C/1995 O1 (Hale-Bopp) were performed with the IRAM Plateau de Bure interferometer on 11 March, 1997. The obs…
The chemical diversity of comets
J. Crovisier, N. Biver, D. Bockelée-Morvan +3
A fundamental question in cometary science is whether the different dynamical classes of comets have different chemical compositions, which would reflect different initial conditio…
Radio observations of Jupiter-family comets
J. Crovisier, N. Biver, D. Bockelée-Morvan +1
Radio observations from decimetric to submillimetric wavelengths are now a basic tool for the investigation of comets. Spectroscopic observations allow us i) to monitor the gas pro…
Large excess of heavy nitrogen in both hydrogen cyanide and cyanogen from comet 17P/Holmes
D. Bockelée-Morvan, N. Biver, E. Jehin +15
From millimeter and optical observations of the Jupiter-family comet 17P/Holmes performed soon after its huge outburst of October 24, 2007, we derive 14 N/15N = 139 +/- 26 in HCN,…
Radio observations of comet 9P/Tempel 1 before and after Deep Impact
N. Biver, D. Bockelée-Morvan, J. Boissier +14
Comet 9P/Tempel 1 was the target of a multi-wavelength worldwide investigation in 2005. The NASA Deep Impact mission reached the comet on 4.24 July 2005, delivering a 370 kg impact…
A ridge of recent massive star formation between Sgr B2M and Sgr B2N
P. de Vicente, J. Martin-Pintado, R. Neri +1
We present single dish and interferometric maps of several rotational transitions of HC3N vibrationally excited levels towards Sgr B2. The single dish maps show, for the first time…