Search Publications
GRB 161219B/SN 2016jca: A low-redshift gamma-ray burst supernova powered by radioactive heating
Covino, S.; Sánchez-Ramírez, R.; D'Elia, V. +22 more
Since the first discovery of a broad-lined type Ic supernova (SN) with a long-duration gamma-ray burst (GRB) in 1998, fewer than fifty GRB-supernovae (SNe) have been discovered. The intermediate-luminosity Swift GRB 161219B and its associated supernova SN 2016jca, which occurred at a redshift of z = 0.1475, represents only the seventh GRB-SN to ha…
The MUSE Hubble Ultra Deep Field Survey. IV. Global properties of C III] emitters
Feltre, Anna; Bacon, Roland; Inami, Hanae +12 more
The C III] λλ1907, 1909 emission doublet has been proposed as an alternative to Lyman-α in redshift confirmations of galaxies at z ≳ 6 since it is not attenuated by the largely neutral intergalactic medium at these redshifts and is believed to be strong in the young, vigorously star-forming galaxies present at these early cosmic times. We present …
The ALMA Redshift 4 Survey (AR4S). I. The massive end of the z = 4 main sequence of galaxies
Elbaz, D.; Leiton, R.; Okumura, K. +4 more
We introduce the ALMA Redshift 4 Survey (AR4S), a systematic ALMA survey of all the known galaxies with stellar mass (M∗) larger than 5 × 1010M⊙ at 3.5 <z< 4.7 in the GOODS-south, UDS and COSMOS CANDELS fields. The sample we have analyzed in this paper is composed of 96 galaxies observed with ALMA at 890 &mic…
Cold and warm electrons at comet 67P/Churyumov-Gerasimenko
Wahlund, J. -E.; Nilsson, H.; André, M. +20 more
Context. Strong electron cooling on the neutral gas in cometary comae has been predicted for a long time, but actual measurements of low electron temperature are scarce.
Aims: Our aim is to demonstrate the existence of cold electrons in the inner coma of comet 67P/Churyumov-Gerasimenko and show filamentation of this plasma.
Methods: In s…
Mass distribution in the core of MACS J1206. Robust modeling from an exceptionally large sample of central multiple images
Zitrin, A.; Grillo, C.; Tozzi, P. +25 more
We present a new strong lensing analysis of the galaxy cluster MACS J1206.2-0847 (MACS 1206), at z = 0.44, using deep spectroscopy from CLASH-VLT and VLT/MUSE archival data in combination with imaging from the Cluster Lensing and Supernova survey with Hubble. MUSE observations enable the spectroscopic identification of 23 new multiply imaged sourc…
What does CIVλ1549 tell us about the physical driver of the Eigenvector quasar sequence?
Marziani, P.; Stirpe, G. M.; Perea, J. +8 more
Broad emission lines in quasars enable us to "resolve" structure and kinematics of the broad-line emitting region (BLR) thought to involve an accretion disk feeding a supermassive black hole. Interpretation of broad line measures within the 4DE1 formalism simplifies the apparent confusion among such data by contrasting and unifying properties of s…
Estimation of a coronal mass ejection magnetic field strength using radio observations of gyrosynchrotron radiation
Carley, Eoin P.; Vilmer, Nicole; Simões, Paulo J. A. +1 more
Coronal mass ejections (CMEs) are large eruptions of plasma and magnetic field from the low solar corona into interplanetary space. These eruptions are often associated with the acceleration of energetic electrons which produce various sources of high intensity plasma emission. In relatively rare cases, the energetic electrons may also produce gyr…
The compactness of the isolated neutron star RX J0720.4-3125
Werner, K.; Haberl, F.; Neuhäuser, R. +4 more
Aims: To estimate the compactness of the thermally-emitting isolated neutron star (INS) RX J0720.4-3125, an X-ray spin-phase-resolved spectroscopic study is conducted. In addition, to identify the genuine spin-period, an X-ray timing analysis is performed.
Methods: The data from all observations of RX J0720.4-3125 conducted by XMM-Newton…
Cosmic rays, gas and dust in nearby anticentre clouds. I. CO-to-H2 conversion factors and dust opacities
Marshall, D. J.; Casandjian, J. M.; Grenier, I. A. +1 more
Aims: We aim to explore the capabilities of dust emission and γ rays for probing the properties of the interstellar medium in the nearby anti-centre region, using γ-ray observations with the Fermi Large Area Telescope (LAT), and the thermal dust optical depth inferred from Planck and IRAS observations. We also aim to study massive star-formin…
Planck intermediate results. L. Evidence of spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB B-mode analysis
Miville-Deschênes, M. -A.; Boulanger, F.; Bernard, J. -P. +156 more
The characterization of the Galactic foregrounds has been shown to be the main obstacle in thechallenging quest to detect primordial B-modes in the polarized microwave sky. We make use of the Planck-HFI 2015 data release at high frequencies to place new constraints on the properties of the polarized thermal dust emission at high Galactic latitudes…