slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0 slideshow 0

GRBS FOLLOWED-UP BY THE BOOTES NETWORK

Titulo: 
GRBS FOLLOWED-UP BY THE BOOTES NETWORK
Autores: 
Guziy, S; Castro-Tirado, A; Jelinek, M; Gorosabel, J; Kubanek, P; Cunniffe, R; Lara-Gil, O; Rabaza-Castillo, O; Postigo, AD; Sanchez-Ramirez, R; Tello, J; del Pulgar, CP; Castillo-Carrion, S; Ceron, JC; Sanguino, TDM; Hudec, R; Vitek, S; Carretero, BD; Andreu, JD; Fernandez-Munoz, R; Perez-Ramirez, D; Yock, P; Allen, W; Bond, I; Kheyfets, I; Christie, G; Sabau-Graziati, L; Cui, C; Fan, Y; Park, IH
Resumen: 
The Burst Observer and Optical Transient Exploring System (BOOTES), is a global robotic observatory network, which started in 1998 with Spanish leadership devoted to study optical emissions from gamma ray bursts (GRBs) that occur in the Universe. We present shot history and current status of BOOTES network. The Network philosophy, science and some details of 117 GRBs followed-up are discussed.
Autor principal: 
Guziy, S
Autor/es del IAA: 
Guziy, S.; Castro-Tirado, A.; Jelinek, M.; Gorosabel, J.; Kubanek, P.; Cunniffe, R.; Lara-Gil, O.; Rabaza-Castillo, O.; de Ugarte Postigo, A.; Sanchez-Ramirez, R.; Tello, J.
DOI: 
10.1051/eas/1361038
Revista: 
GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE
Fecha de publicación: 
2013
Volumen: 
61
Páginas: 
251-254
Tipo de documento: 
Proceedings Paper

GRB 110715A: MULTIWAVELENGTH STUDY OF THE FIRST GAMMA-RAY BURST OBSERVED WITH ALMA

Titulo: 
GRB 110715A: MULTIWAVELENGTH STUDY OF THE FIRST GAMMA-RAY BURST OBSERVED WITH ALMA
Autores: 
Sanchez-Ramirez, R; Hancock, P; Murphy, T; Postigo, AD; Gorosabel, J; Kann, DA; Thone, CC; Lundgren, A; Kamble, A; Oates, SR; Fynbo, JPU; Monsalvo, ID; Garcia-Appadoo, D; Martin, S; Kuin, NPM; Greiner, J; Castro-Tirado, AJ
Resumen: 
GRB 110715A had a bright afterglow that was obscured in the optical by a high Galactic extinction. We discovered the submillimeter counterpart with APEX and followed it in radio with ATCA for over 2 months. Additional submm observations were performed with ALMA as a test of the ToO procedures during commissioning, becoming the first GRB afterglow to be detected by the observatory. UV, optical and NIR observations were performed with Swift/UVOT and 2.2 m/GROND in La Silla and X-ray data were obtained by Swift/XRT. The dataset is complemented with spectroscopic data from the VLT/X-shooter spectrograph. The absorption features present in the intermediate resolution optical/nIR spectra reveal a redshift of 0.8224 and a host galaxy environment with low ionization. We fit in the host galaxy absorption features two velocity components separated by 30 km/s, implying a host galaxy with low dynamical activity.
Autor principal: 
Sanchez-Ramirez, R
Autor/es del IAA: 
Sanchez-Ramirez, R.; de Ugarte Postigo, A.; Gorosabel, J.; Thoene, C. C.; Castro-Tirado, A. J.
DOI: 
10.1051/eas/1361042
Revista: 
GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE
Fecha de publicación: 
2013
Volumen: 
61
Páginas: 
267-269
Tipo de documento: 
Proceedings Paper

MILLIMETRE OBSERVATIONS OF GAMMA-RAY BURSTS AT IRAM

Titulo: 
MILLIMETRE OBSERVATIONS OF GAMMA-RAY BURSTS AT IRAM
Autores: 
Castro-Tirado, AJ; Bremer, M; Winters, JM; Tello, JC; Pandey, SB; Postigo, AD; Gorosabel, J; Guziy, S; Jelinek, M; Sanchez-Ramirez, R; Perez-Ramirez, D; Ceron, JMC
Resumen: 
Since 1997, and following our detection of the first mm after.: glow, we have followed-up 70 GRBs, mainly with the IRAM's Plateau de Bure Interferometer, what can be considered as the IRAM Legacy GRB Sample. 66 events were observed at 3 mm, with 19 of them being detected (with another 3 having marginal detections). 32 GRBs were followed up at 1 mm, with 6 of them being detected. Redshifts for the GRB afterglows lie in the range z = 0.03-8.3, with measured flux densities (at 3 mm) varying between 0.25 and 60 mJy (but usually < 1.5 mJy) with first observations taking place around 1-2 days after the GRB. Forward shock emission expleains the observations with the exception of one particular case (GRB 090423 at z = 8.2) for which reverse shock emission is required.
Autor principal: 
Castro-Tirado, AJ
Autor/es del IAA: 
Castro-Tirado, A. J.; Tello, J. C.; de Ugarte Postigo, A.; Gorosabel, J.; Jelinek, M.; Sanchez-Ramirez, R.
DOI: 
10.1051/eas/1361045
Revista: 
GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE
Fecha de publicación: 
2013
Volumen: 
61
Páginas: 
279-281
Tipo de documento: 
Proceedings Paper

STATUS OF THE BOOTES-IR PROJECT AT OSN FOR GRB NEAR-IR FOLLOW-UP

Titulo: 
STATUS OF THE BOOTES-IR PROJECT AT OSN FOR GRB NEAR-IR FOLLOW-UP
Autores: 
Cunniffe, R; Castro-Tirado, AJ; Jelinek, M; Gorosabel, J; Moline, B; Garcia-Segura, F
Resumen: 
Bootes-IR (Castro-Tirado et al. 2005) is a robotic observatory based around a 60 cm alt-az telescope (dubbed T60) that can slew rapidly while carrying heavy instrumentation at the Nasmyth foci. Initially commissioned with an optical camera, with which the optical afterglow to GRB 060707 (http://gcn.gsfc.nasa.gov/gcn3/5290.gcn3) was discovered, we have concentrated our efforts on the near-IR (0.8-2.5 mu m) camera (BIRCAM) for which the telescope was specifically designed. The telescope is installed at the Observatorio de Sierra Nevada near Granada in Spain, at an altitude of 3000 m and in an area of very low humidity. The telescope, dome, camera and liquid nitrogen generation and refilling systems have all been recently brought back into operation, and routine observations are expected to begin within the next few months.
Autor principal: 
Cunniffe, R
Autor/es del IAA: 
Cunniffe, R.; Castro-Tirado, A. J.; Jelinek, M.; Gorosabel, J.; Moline, B.
DOI: 
10.1051/eas/1361076
Revista: 
GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE
Fecha de publicación: 
2013
Volumen: 
61
Páginas: 
471-474
Tipo de documento: 
Proceedings Paper

PHOTOMETRIC OBSERVATIONS OF GRB 080605 BY BOOTES-1B AND BOOTES-2

Titulo: 
PHOTOMETRIC OBSERVATIONS OF GRB 080605 BY BOOTES-1B AND BOOTES-2
Autores: 
Jelinek, M; Gauna, EG; Castro-Tirado, AJ; Gorosabel, J
Resumen: 
BOOTES-1B and BOOTES-2 were first to follow-up the Swift GRB 080605. Observations started 44s after the GRB trigger, discovering the optical afterglow with the brightness of R = 14.7. A power-law decay with an alpha = 1.27 +/- 0.04 was observed during the first similar to 600s after the trigger.
Autor principal: 
Jelinek, M
Autor/es del IAA: 
Jelinek, M.; Castro-Tirado, A. J.; Gorosabel, J.
DOI: 
10.1051/eas/1361077
Revista: 
GAMMA-RAY BURSTS: 15 YEARS OF GRB AFTERGLOWS - PROGENITORS, ENVIRONMENTS AND HOST GALAXIES FROM THE NEARBY TO THE EARLY UNIVERSE
Fecha de publicación: 
2013
Volumen: 
61
Páginas: 
475-477
Tipo de documento: 
Proceedings Paper

The Australian bushfires of February 2009: MIPAS observations and GEM-AQ model results (vol 13, pg 1637, 2013)

Titulo: 
The Australian bushfires of February 2009: MIPAS observations and GEM-AQ model results (vol 13, pg 1637, 2013)
Autores: 
Glatthor, N; Hopfner, M; Semeniuk, K; Lupu, A; Palmer, PI; McConnell, JC; Kaminski, JW; von Clarmann, T; Stiller, GP; Funke, B; Kellmann, S; Linden, A; Wiegele, A
Autor principal: 
Glatthor, N
Autor/es del IAA: 
Funke, B.
DOI: 
10.5194/acp-13-4373-2013
Revista: 
ATMOSPHERIC CHEMISTRY AND PHYSICS
Fecha de publicación: 
2013
Volumen: 
13
Issue: 
8
Páginas: 
4373-4373
Tipo de documento: 
Correction

An orientable solar panel system for nanospacecraft

Titulo: 
An orientable solar panel system for nanospacecraft
Autores: 
Santoni, F; Piergentili, F; Candini, GP; Perelli, M; Negri, A; Marino, M
Resumen: 
An orientable deployed solar array system for 1-5 kg weight nanospacecraft is described, enhancing the achievable performance of these typically power-limited systems. The system is based on a deployable solar panel system, previously developed with cooperation between Laboratorio di Sistemi Aerospaziali of University of Roma 'la Sapienza' and the company IMT (Ingegneria Marketing Tecnologia). The system proposed is a modular one, and suitable in principle for the 1U, 2U and 3U standard Cubesat bus, even if the need for three axis attitude stabilization makes it typically preferred for 3U Cubesats. The size of each solar panel is the size of a lateral Cubesat surface. A single degree of freedom maneuvering capability is given to the deployed solar array, in order to follow the apparent motion of the sun as close as possible, given the mission requirements on the spacecraft attitude. Considerable effort has been devoted to design the system compatible with the Cubesat standard, being mounted outside on the external spacecraft structure, without requiring modifications on the standard prescriptions. The small available volume is the major constraint, which forces to use miniaturized electric motor technology. The system design trade-off is discussed, leading to the selection of an architecture based on two independently steerable solar array wings. (C) 2014 IAA. Published by Elsevier Ltd. All rights reserved.
Autor principal: 
Santoni, F
Autor/es del IAA: 
Candini, Gian Paolo
DOI: 
10.1016/j.actaastro.2014.04.020
Revista: 
ACTA ASTRONAUTICA
Fecha de publicación: 
2014
Volumen: 
101
Páginas: 
120-128
Tipo de documento: 
Article
Palabras clave: 
Solar array drive assembly; Deployable solar panels; Nanosatellite

Broad-band polarimetric follow-up of Type IIP SN 2012aw

Titulo: 
Broad-band polarimetric follow-up of Type IIP SN 2012aw
Autores: 
Kumar, B; Pandey, SB; Eswaraiah, C; Gorosabel, J
Resumen: 
We present the results based on R-band polarimetric follow-up observations of the nearby (similar to 10 Mpc) Type II-plateau SN 2012aw. Starting from similar to 10 d after the supernova (SN) explosion, these polarimetric observations cover similar to 90 d (during the plateau phase) and are distributed over nine epochs. To characterize the Milky Way interstellar polarization (ISPMW), we have observed 14 field stars lying in a radius of 10 degrees around the SN. We have also tried to subtract the host galaxy dust polarization component assuming that the dust properties in the host galaxy are similar to that observed for Galactic dust and the general magnetic field follow the large-scale structure of the spiral arms of a galaxy. After correcting the ISPMW, our analysis infer that SN 2012aw has maximum polarization of 0.85 +/- 0.08 per cent but polarization angle does not show much variation with a weighted mean value of similar to 138 degrees. However, if both ISPMW and host galaxy polarization components are subtracted from the observed polarization values of SN, maximum polarization of the SN becomes 0.68 +/- 0.08 per cent. The distribution of Q and U parameters appears to follow a loop-like structure. The evolution of polarimetric light curve properties of this event is also compared with other well-studied core-collapse SNe of similar type.
Autor principal: 
Kumar, B
Autor/es del IAA: 
Gorosabel, J.
DOI: 
10.1093/mnras/stu811
Revista: 
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Fecha de publicación: 
2014/07/21
Volumen: 
442
Issue: 
1
Páginas: 
2-12
Tipo de documento: 
Article
Palabras clave: 
techniques: polarimetric; supernovae: general; supernovae: individual: SN 2012aw; galaxies: individual; NGC 3351

A very young, compact bipolar H2O maser outflow in the intermediate-mass star-forming LkH alpha 234 region

Titulo: 
A very young, compact bipolar H2O maser outflow in the intermediate-mass star-forming LkH alpha 234 region
Autores: 
Torrelles, JM; Curiel, S; Estalella, R; Anglada, G; Gomez, JF; Canto, J; Patel, NA; Trinidad, MA; Girart, JM; Carrasco-Gonzalez, C; Rodriguez, LF
Resumen: 
We report multi-epoch Very Long Baseline Interferometry (VLBI) H2O maser observations towards the compact cluster of young stellar objects (YSOs) close to the Herbig Be star LkH alpha 234. This cluster includes LkH alpha 234 and at least nine more YSOs that are formed within projected distances of similar to 10 arcsec (similar to 9000 au). We detect H2O maser emission towards four of these YSOs. In particular, our VLBI observations (including proper motion measurements) reveal a remarkable very compact (similar to 0.2 arcsec = similar to 180 au), bipolar H2O maser outflow emerging from the embedded YSO Very Large Array (VLA) 2. We estimate a kinematic age of similar to 40 yr for this bipolar outflow, with expanding velocities of similar to 20 km s(-1) and momentum rate. MwVw similar or equal to 10(-4)-10(-3) M-circle dot yr(-1) km s(-1) x (Omega/4 pi), powered by a YSO of a few solar masses. We propose that the outflow is produced by recurrent episodic jet ejections associated with the formation of this YSO. Short-lived episodic ejection events have previously been found towards high-mass YSOs. We show now that this behaviour is also present in intermediatemass YSOs. These short-lived episodic ejections are probably related to episodic increases in the accretion rate, as observed in low-mass YSOs. We predict the presence of an accretion disc associated with VLA 2. If detected, this would represent one of the few known examples of intermediate-mass stars with a disc-YSO-jet system at scales of a few hundred astronomical units.
Autor principal: 
Torrelles, JM
Autor/es del IAA: 
Anglada, G.; Gomez, J. F.
DOI: 
10.1093/mnras/stu847
Revista: 
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Fecha de publicación: 
2014/07/21
Volumen: 
442
Issue: 
1
Páginas: 
148-159
Tipo de documento: 
Article
Palabras clave: 
masers; stars: formation; ISM: individual objects: LkH alpha 234; ISM: jets and outflows

A study of the ionized gas in Stephan's Quintet from integral field spectroscopy observations

Titulo: 
A study of the ionized gas in Stephan's Quintet from integral field spectroscopy observations
Autores: 
Rodriguez-Baras, M; Rosales-Ortega, FF; Diaz, AI; Sanchez, SF; Pasquali, A
Resumen: 
Stephan's Quintet (SQ) is a famous interacting compact group of galaxies in an important stage of dynamical evolution, but surprisingly very few spectroscopic studies are found in the literature. We present optical integral field spectroscopy (IFS) observations of the SQ from the PPAK IFS Nearby Galaxies Survey, that provide a powerful way of studying with spatial resolution the physical characteristics of the ionized gas within the group. The nature of the gas emission is analysed using 2D maps of continuum-subtracted, pure emission-line intensities, stacked spectra, diagnostic diagrams, and photoionization model predictions. In the case of NGC 7319, we study the galaxy-wide high-velocity outflow emission by comparing the emission properties with theoretical shock and AGN models. We conclude that the excitation mechanism of the gas in this galaxy is a mixture of AGN photoionization and shocks with a photoionizing precursor. The emission spectra from the large-scale shock front in the interacting pair NGC 7318A/B is analysed, confirming the presence of several kinematic components. Comparison with predictions from theoretical shock models suggests that the gas emission is consistent with shocks without a photoionizing precursor, low pre-shock density, and velocities in the range of similar to 200-400 km s(-1). The gas oxygen abundance for NGC 7318B is determined using an updated O3N2 calibration. Although NGC 7317 shows no significant gas emission, an ionizing cluster is found southwest of this galaxy, probably the result of tidal interaction. As a by-product, we analyse the gas emission of the foreground galaxy NGC 7320.
Autor principal: 
Rodriguez-Baras, M
Autor/es del IAA: 
Sanchez, S. F.
DOI: 
10.1093/mnras/stu851
Revista: 
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Fecha de publicación: 
2014/07/21
Volumen: 
442
Issue: 
1
Páginas: 
495-508
Tipo de documento: 
Article
Palabras clave: 
methods: data analysis; techniques: imaging spectroscopy; galaxies: groups: individual: Stephan's Quintet; galaxies: interactions; galaxies: ISM

Publicaciones IAA-CSIC

Histórico de publicaciones

IAA-CSIC Publications

IAA-CSIC Publications Full Archive