Search Publications
The 2015 outburst of the accreting millisecond pulsar IGR J17511-3057 as seen by INTEGRAL, Swift, and XMM-Newton
Torres, D. F.; Romano, P.; Ferrigno, C. +5 more
We report on INTEGRAL, Swift, and XMM-Newton observations of IGR J17511-3057 performed during the outburst that occurred between March 23 and April 25, 2015. The source reached a peak flux of 0.7(2) × 10-9 erg cm-2 s-1 and decayed to quiescence in approximately a month. The X-ray spectrum was dominated by a power l…
Asteroid (21) Lutetia: Disk-resolved photometric analysis of Baetica region
Sierks, H.; Barucci, M. A.; Fornasier, S. +4 more
(21) Lutetia has been visited by Rosetta mission on July 2010 and observed with a phase angle ranging from 0.15° to 156.8°. The Baetica region, located at the north pole has been extensively observed by OSIRIS cameras system. Baetica encompass a region called North Pole Crater Cluster (NPCC), shows a cluster of superposed craters which presents si…
Planck's Dusty GEMS. II. Extended [CII] emission and absorption in the Garnet at z = 3.4 seen with ALMA
Kneissl, R.; Le Floc'h, E.; Falgarone, E. +9 more
We present spatially resolved ALMA [CII] observations of the bright (flux density S350 = 400 mJy at 350 µm), gravitationally lensed, starburst galaxy PLCK G045.1+61.1 at z = 3.427, the "Garnet". This source is part of our set of "Planck's Dusty GEMS", discovered with the Planck's all-sky survey. Two emission-line clouds with a rel…
X-ray and optical spectroscopy of the massive young open cluster IC 1805
Nazé, Y.; Rauw, G.
Context. Very young open clusters are ideal places to study the X-ray properties of a homogeneous population of early-type stars. In this respect, the IC 1805 open cluster is very interesting as it hosts the O4 If+ star HD 15570 thought to be in an evolutionary stage intermediate between a normal O-star and a Wolf-Rayet star.
Aims:…
Triangulum galaxy viewed by Planck
Chemin, L.; Nucita, A. A.; De Paolis, F. +9 more
We used Planck data to study the M 33 galaxy and find a substantial temperature asymmetry with respect to its minor axis projected onto the sky plane. This temperature asymmetry correlates well with the HI velocity field at 21 cm, at least within a galactocentric distance of 0.5°, and it is found to extend up to about 3° from the galaxy center. We…
Prediction of shock arrival times from CME and flare data
Nieves-Chinchilla, Teresa; Pulkkinen, Antti; Núñez, Marlon
This paper presents the Shock Arrival Model (SARM) for predicting shock arrival times for distances from 0.72 AU to 8.7 AU by using coronal mass ejections (CME) and flare data. SARM is an aerodynamic drag model described by a differential equation that has been calibrated with a data set of 120 shocks observed from 1997 to 2010 by minimizing the m…
Properties of the dust in the coma of 67P/Churyumov-Gerasimenko observed with VIRTIS- M
Erard, S.; Piccioni, G.; Bieler, A. +16 more
An investigation is presented of the dust scattering in the coma of 67P/Churyumov-Gerasimenko for the dates of 2015 February 28, March 15 and April 27. A comparison of the morphology of dust continuum maps at 1.1 µm and gas emission shows that for the above dates the spatial distribution of the dust is strongly correlated with H2O…
On the Relationship Between G-Band Bright Point Dynamics and Their Magnetic Field Strengths
Yang, Yunfei; Ji, Kaifan; Feng, Song +4 more
G-band bright points (GBPs) are regarded as good manifestations of magnetic flux concentrations. We aim to investigate the relation between the dynamic properties of GBPs and their longitudinal magnetic field strengths. High spatial and temporal resolution observations were recorded simultaneously with G-band filtergrams and Narrow-band Filter Ima…
Saturn's quasiperiodic magnetohydrodynamic waves
Coates, A. J.; Dougherty, M. K.; Hospodarsky, G. B. +11 more
Quasiperiodic ∼1 h fluctuations have been recently reported by numerous instruments on board the Cassini spacecraft. The interpretation of the sources of these fluctuations has remained elusive to date. Here we provide an explanation for the origin of these fluctuations using magnetometer observations. We find that magnetic field fluctuations at h…
SOFIA Mid-infrared Imaging1 and CSO Submillimeter Polarimetry Observations of G034.43+00.24 MM1
Gehrz, R. D.; Vaillancourt, John E.; Shenoy, Dinesh +3 more
We present 11.1 to 37.1 µm imaging observations of the very dense molecular cloud core MM1 in G034.43+00.24 using FORCAST on SOFIA and submillimeter (submm) polarimetry using SHARP on the Caltech Submillimeter Observatory. We find that at the spatial resolution of SOFIA, the point-spread function (PSF) of MM1 is consistent with being a singl…