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View article: GRB 081007 AND GRB 090424: THE SURROUNDING MEDIUM, OUTFLOWS, AND SUPERNOVAE
GRB 081007 AND GRB 090424: THE SURROUNDING MEDIUM, OUTFLOWS, AND SUPERNOVAE Open
We discuss the results of the analysis of multi-wavelength data for the afterglows of GRB 081007 and GRB 090424, two bursts detected by Swift. One of them, GRB 081007, also shows a spectroscopically confirmed supernova, SN 2008hw, which re…
View article: THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D
THE HIGHLY ENERGETIC EXPANSION OF SN 2010bh ASSOCIATED WITH GRB 100316D Open
We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed Type Ic supernova, SN 2010bh, associated with the soft, long-duration gamma-ray burst (X ...
View article: GRB 171010A/SN 2017htp: a GRB-SN at z = 0.33
GRB 171010A/SN 2017htp: a GRB-SN at z = 0.33 Open
The number of supernovae known to be connected with long-duration gamma-ray bursts (GRBs) is increasing and the link between these events is no longer exclusively found at low redshift (z ≲ 0.3) but is well established also at larger dista…
View article: Short GRB 160821B: A Reverse Shock, a Refreshed Shock, and a Well-sampled Kilonova
Short GRB 160821B: A Reverse Shock, a Refreshed Shock, and a Well-sampled Kilonova Open
We report our identification of the optical afterglow and host galaxy of the short-duration gamma-ray burst sGRB 160821B. The spectroscopic redshift of the host is z = 0.162, making it one of the lowest redshift short-duration gamma-ray bu…
View article: Broad-lined type Ic supernova iPTF16asu: A challenge to all popular models
Broad-lined type Ic supernova iPTF16asu: A challenge to all popular models Open
It is well known that ordinary supernovae (SNe) are powered by 56Ni cascade decay. Broad-lined type Ic SNe (SNe Ic-BL) are a subclass of SNe that are not all exclusively powered by 56Ni decay. It was suggested that some SNe Ic-BL are power…
View article: The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies, and redshifts with 12 optical filters
The Southern Photometric Local Universe Survey (S-PLUS): improved SEDs, morphologies, and redshifts with 12 optical filters Open
The Southern Photometric Local Universe Survey (S-PLUS) is imaging ∼9300 deg2 of the celestial sphere in 12 optical bands using a dedicated 0.8 m robotic telescope, the T80-South, at the Cerro Tololo Inter-american Observatory, Chile. The …
View article: A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf
A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf Open
We present the results of the monitoring campaign of the Type IIn supernova (SN) 2018cnf (a.k.a. ASASSN-18mr). It was discovered about ten days before the maximum light (on MJD = 58 293.4 ± 5.7 in the V band, with M V = −18.13 ± 0.15 mag).…
View article: Modeling the Light Curves of the Luminous Type Ic Supernova 2007D
Modeling the Light Curves of the Luminous Type Ic Supernova 2007D Open
SN 2007D is a nearby (redshift z = 0.023146), luminous Type Ic supernova (SN) having a narrow light curve (LC) and high peak luminosity. Previous research based on the assumption that it was powered by the 56 Ni cascade decay suggested tha…
View article: The X-shooter GRB afterglow legacy sample (XS-GRB)
The X-shooter GRB afterglow legacy sample (XS-GRB) Open
In this work we present spectra of all γ -ray burst (GRB) afterglows that have been promptly observed with the X-shooter spectrograph until 31/03/2017. In total, we have obtained spectroscopic observations of 103 individual GRBs observed w…
View article: X-shooter and ALMA spectroscopy of GRB 161023A : a study of metals and molecules in the line of sight towards a luminous GRB
X-shooter and ALMA spectroscopy of GRB 161023A : a study of metals and molecules in the line of sight towards a luminous GRB Open
Full Tables A.1 and A.2 are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/620/A119
View article: X-shooter and ALMA spectroscopy of GRB 161023A
X-shooter and ALMA spectroscopy of GRB 161023A Open
Context. Long gamma-ray bursts (GRBs) are produced during the dramatic deaths of massive stars with very short lifetimes, meaning that they explode close to the birth place of their progenitors. Over a short period they become the most lum…
View article: The Properties of GRB 120923A at a Spectroscopic Redshift of z ≈ 7.8
The Properties of GRB 120923A at a Spectroscopic Redshift of z ≈ 7.8 Open
Gamma-ray bursts (GRBs) are powerful probes of early stars and galaxies, during and potentially even before the era of reionization. Although the number of GRBs identified at z ≳ 6 remains small, they provide a unique window on typical sta…
View article: The luminous host galaxy, faint supernova and rapid afterglow rebrightening of GRB 100418A
The luminous host galaxy, faint supernova and rapid afterglow rebrightening of GRB 100418A Open
Context . Long gamma-ray bursts (GRBs) give us the chance to study both their extreme physics and the star-forming galaxies in which they form. Aims . GRB 100418A, at a redshift of z = 0.6239, had a bright optical and radio afterglow, and …
View article: Highly ionized metals as probes of the circumburst gas in the natal regions of gamma-ray bursts
Highly ionized metals as probes of the circumburst gas in the natal regions of gamma-ray bursts Open
We present here a survey of high-ionization absorption lines in the afterglow\nspectra of long-duration gamma-ray bursts (GRBs) obtained with the\nVLT/X-shooter spectrograph. Our main goal is to investigate the circumburst\nmedium in the n…
View article: Empirically determined dilution factors of stripped-envelope, core-collapse SNe: Paper II - Using GRB-SNe to determine the Hubble Constant
Empirically determined dilution factors of stripped-envelope, core-collapse SNe: Paper II - Using GRB-SNe to determine the Hubble Constant Open
The aim of this work is to use gamma-ray burst supernovae (GRB-SNe) as cosmological probes to measure the Hubble constant, $H_0$, in the local Universe. In the context of the Expanding Photosphere Method (EPM), I use empirically derived di…
View article: Empirically determined dilution factors of stripped-envelope, core-collapse SNe: Paper I - Method & Progenitor constraints
Empirically determined dilution factors of stripped-envelope, core-collapse SNe: Paper I - Method & Progenitor constraints Open
In this work, the empirically derived dilution/correct factors of a sample stripped-envelope, core-collapse supernovae (SE-SNe), including five SNe IIb, four SNe Ib, six SNe Ic and two relativistic broad-lined type Ic supernovae (SNe IcBL)…
View article: The optical/NIR afterglow of GRB 111209A: Complex yet not unprecedented
The optical/NIR afterglow of GRB 111209A: Complex yet not unprecedented Open
Context . Afterglows of gamma-ray bursts (GRBs) are simple in the most basic model, but can show many complex features. The ultra-long duration GRB 111209A, one of the longest GRBs ever detected, also has the best-monitored afterglow in th…
View article: Testing the magnetar scenario for superluminous supernovae with circular polarimetry
Testing the magnetar scenario for superluminous supernovae with circular polarimetry Open
Superluminous supernovae (SLSNe) are at least ~5 times more luminous than common supernovae. Especially hydrogen-poor SLSN-I are difficult to explain with conventional powering mechanisms. One possible scenario that might explain such lumi…
View article: A Precise Distance to the Host Galaxy of the Binary Neutron Star Merger GW170817 Using Surface Brightness Fluctuations
A Precise Distance to the Host Galaxy of the Binary Neutron Star Merger GW170817 Using Surface Brightness Fluctuations Open
The joint detection of gravitational waves (GWs) and electromagnetic radiation from the binary neutron star (BNS) merger GW170817 has provided unprecedented insight into a wide range of physical processes: heavy element synthesis via the r…
View article: The host galaxy of the short GRB 111117A at <i>z</i> = 2.211
The host galaxy of the short GRB 111117A at <i>z</i> = 2.211 Open
It is notoriously difficult to localize short γ -ray bursts (sGRBs) and their hosts to measure their redshifts. These measurements, however, are critical for constraining the nature of sGRB progenitors, their redshift distribution, and the…
View article: Beryllium detection in the very fast nova ASASSN-16kt (V407 Lupi)
Beryllium detection in the very fast nova ASASSN-16kt (V407 Lupi) Open
We present high-resolution spectroscopic observations of the fast nova\nASASSN-16kt (V407 Lup). A close inspection of spectra obtained at early stages\nhas revealed the presence of low-ionization lines, and among the others we have\nidenti…
View article: GRB 130427A afterglow: a test for GRB models
GRB 130427A afterglow: a test for GRB models Open
Gamma-ray Burst 130427A had the largest fluence for almost 30 years. With an isotropic energy output of 8.5×1053 erg and redshift of 0.34, it combined a very high energy release with a relative proximity to Earth in an unprecedented fashio…
View article: The host of the Type I SLSN 2017egm
The host of the Type I SLSN 2017egm Open
Context. Type I superluminous supernova (SLSN) host galaxies are predominantly low-metallicity, highly star-forming (SF) dwarfs. One of the current key questions is whether Type I SLSNe can only occur in such environments and hosts. Aims. …
View article: The optical afterglow of the short gamma-ray burst associated with GW170817
The optical afterglow of the short gamma-ray burst associated with GW170817 Open
The binary neutron star merger GW170817 was the first multi-messenger event observed in both gravitational and electromagnetic waves. The electromagnetic signal began approximately 2 seconds post-merger with a weak, short burst of gamma-ra…
View article: Broad-lined type Ic supernova iPTF16asu: A challenge to all existing models
Broad-lined type Ic supernova iPTF16asu: A challenge to all existing models Open
iPTF16asu is a peculiar broad-lined type Ic supernova (SN) discovered by the intermediate Palomar Transient Factory. With a rest-frame rise time of only 4 days, iPTF16asu challenges the existing popular models, for example, the radioactive…
View article: Modeling The Most Luminous Supernova Associated with a Gamma-Ray Burst, SN 2011kl
Modeling The Most Luminous Supernova Associated with a Gamma-Ray Burst, SN 2011kl Open
We study the most luminous known supernova (SN) associated with a gamma-ray burst (GRB), SN 2011kl. The photospheric velocity of SN 2011kl around peak brightness is 21,000 ± 7000 km s −1 . Owing to different assumptions related to the ligh…