Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.7k papers
- Institut de Ciències del CosmosES1.4k papers
- TU Dortmund UniversityDE1.2k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.2k papers
- Heidelberg UniversityDE1.2k papers
- University of EdinburghGB1.2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT1.1k papers
- Universitat de ValènciaES1.1k papers
- University of ManchesterGB1.1k papers
- Rutherford Appleton LaboratoryGB1.1k papers
- Imperial College LondonGB1.1k papers
- Massachusetts Institute of TechnologyUS1.1k papers
39 papers · 2 filters
Simultaneous multiwavelength observations of the Low/Hard State of the X-ray transient source SWIFT J1753.5-0127
M. Cadolle Bel, M. Ribo, J. Rodriguez +11
We report the results of simultaneous multiwavelength observations of the X-ray transient source SWIFT J1753.5-0127 performed with INTEGRAL, RXTE, NTT, REM and VLA on 2005 August 1…
MAGIC upper limits on the very high energy emission from GRBs
J. Albert, E. Aliu, H. Anderhub +57
The fast repositioning system of the MAGIC Telescope has allowed during its first data cycle, between 2005 and the beginning of year 2006, observing nine different GRBs as possible…
Signal Reconstruction for the MAGIC Telescope
J. Albert
Until April 2007 the MAGIC telescope used a 300 MSamples/s FADC system to sample the shaped PMT signals produced by the captured Cherenkov photons of air showers. Different algorit…
Observation of very high energy gamma-rays from the AGN 1ES 2344+514 in a low emission state with the MAGIC telescope
J. Albert et al.
The MAGIC collaboration has observed very high energy gamma ray emission from the AGN 1ES 2344+514. A gamma-ray signal corresponding to an 11 sigma excess and an integral flux of (…
The population of radio sources in the field of the unidentified gamma-ray source TeV J2032+4130
Josep M. Paredes, Josep Marti, Ishwara Chandra C. H. +1
TeV J2032+4130 is the first extended very high energy gamma-ray source, which has remained enigmatic since its discovery, due to the lack of identification. We report here deep rad…
The Structure of the Inner HH 34 Jet from Optical Integral Field Spectroscopy
Tracy L. Beck, A. Riera, A. C. Raga +1
We present high spatial resolution optical integral field spectroscopy of a collimated Herbig-Haro jet viewed nearly edge-on. Maps of the line emission, velocity centroid, and velo…
First bounds on the very high energy gamma-ray emission from Arp 220
J. Albert et al.
Using the Major Atmospheric Gamma Imaging Cherenkov Telescope (MAGIC), we have observed the nearest ultra-luminous infrared galaxy Arp 220 for about 15 hours. No significant signal…
INTEGRAL/XMM views on the MeV source GRO J1411-64
Diego F. Torres, Shu Zhang, Olaf Reimer +9
The COMPTEL unidentified source GRO J 1411-64 was observed by INTEGRAL and XMM-Newton in 2005. The Circinus Galaxy is the only source detected within the 4 location error of GRO…
Type Ia SNe along redshift: the R(Si II) ratio and the expansion velocities in intermediate z supernovae
G. Altavilla, P. Ruiz-Lapuente, A. Balastegui +17
We study intermediate--z SNe Ia using the empirical physical diagrams which enable to learn about those SNe explosions. This information can be very useful to reduce systematic unc…
Fermi acceleration in astrophysical jets
Frank M. Rieger, Valenti Bosch-Ramon, Peter Duffy
We consider the acceleration of energetic particles by Fermi processes (i.e., diffusive shock acceleration, second order Fermi acceleration, and gradual shear acceleration) in rela…
Detection of HCO+ Emission toward the Planetary Nebula K 3-35
D. Tafoya, Y. Gomez, G. Anglada +8
We report the detection, for the first time, of HCO+ (J=1-0) emission as well as marginal CO (J=1-0) emission toward the planetary nebula (PN) K3-35 as a result of a molecular surv…
Infall of gas as the formation mechanism of stars up to 20 times more massive than the Sun
Maria T. Beltran, Riccardo Cesaroni, Claudio Codella +3
Theory predicts and observations confirm that low-mass stars (like the Sun) in their early life grow by accreting gas from the surrounding material. But for stars ~ 10 times more m…
The Hyades stream: evaporated cluster or intrusion from the inner disk?
B. Famaey, F. Pont, X. Luri +3
The nature of the Hyades stream, or Hyades moving group, is a long-standing question of Galactic Astronomy. Is this stream caused by non-axisymmetric perturbations of the galactic…
Dark-energy equation of state: how far can we go from Λ?
Hrvoje Stefancic
The equation of state of dark energy is investigated to determine how much it may deviate from the equation of state of the cosmological constant (CC). Two aspects of the problem a…
INTEGRAL serendipitous detection of the gamma-ray microquasar LS 5039
P. Goldoni, M. Ribo, T. Di Salvo +3
LS 5039 is the only X-ray binary persistently detected at TeV energies by the Cherenkov HESS telescope. It is moreover a gamma-ray emitter in the GeV and possibly MeV energy ranges…
On the multiwavelength spectrum of the microquasar 1E 1740.7-2942
V. Bosch-Ramon, G. E. Romero, J. M. Paredes +3
Context. The microquasar 1E 1740.7-2942 is a source located in the direction of the Galactic Center. It has been detected at X-rays, soft gamma-rays, and in the radio band, showing…
High-resolution observations of water masers in Bok globules
I. de Gregorio-Monsalvo, J. F. Gomez, O. Suarez +4
We present Very Large Array observations at 1.3 cm of several water maser detections obtained by previous single-dish studies of Bok globules in the Clemens & Barvainis (1988; CB)…
SN 2004aw: Confirming Diversity of Type Ic Supernovae
S. Taubenberger, A. Pastorello, P. A. Mazzali +24
Optical and near-infrared observations of the Type Ic supernova (SN) 2004aw are presented, obtained from day -3 to day +413 with respect to the B-band maximum. The photometric evol…
Eclipsing binaries suitable for distance determination in the Andromeda galaxy
F. Vilardell, I. Ribas, C. Jordi
The Local Group galaxies constitute a fundamental step in the definition of cosmic distance scale. Therefore, obtaining accurate distance determinations to the galaxies in the Loca…
A Multi-wavelength study of 1WGA J1346.5-6255: a new Cas analog unrelated to the background supernova remnant G309.2-00.6
S. Safi-Harb, M. Ribo, Y. Butt +5
1WGA J1346.5-6255 is a ROSAT X-ray source found within the radio lobes of the supernova remnant (SNR) G309.2-00.6. This source also appears to coincide with the bright and early-ty…
INTEGRAL and XMM-Newton observations towards the unidentified MeV source GRO J1411-64
Diego F. Torres, Shu Zhang, Olaf Reimer +9
The COMPTEL unidentified source GRO J1411-64 was observed by INTEGRAL, and its central part, also by XMM-Newton. The data analysis shows no hint for new detections at hard X-rays.…
Multi-wavelength properties of the high-energy bright Seyfert 1 galaxy IGR J18027-1455
J. A. Combi, M. Ribo, J. Marti +1
A new sample of hard X-ray sources in the Galactic Plane is being revealed by the regular observations performed by the INTEGRAL satellite. The full characterization of these sourc…
Discovery of Very High Energy -Rays from Markarian~180 Triggered by an Optical Outburst
J. Albert et al.
The high-frequency-peaked BL Lacertae object Markarian~180 (Mrk~180) was observed to have an optical outburst in 2006 March, triggering a Target of Opportunity observation with the…
Detection of VHE radiation from the BL Lac PG 1553+113 with the MAGIC telescope
J. Albert et al.
In 2005 and 2006, the MAGIC telescope has observed very high energy gamma-ray emission from the distant BL Lac object PG 1553+113. The overall significance of the signal is 8.8 sig…