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1. Fires in the deep: The luminosity distribution of early-time gamma-ray-burst afterglows in light of the Gamow Explorer sensitivity requirements

Author

Kann, D. A., White, N. E., Ghirlanda, G., Oates, S. R., Melandri, A., Jelinek, M., Postigo, A. de Ugarte, Levan, A. J., Martin-Carrillo, A., Paek, G. S. -H., Izzo, L., Blazek, M., Thone, C., Fernandez, J. F. Agui, Salvaterra, R., Tanvir, N. R., Chang, T. -C., O'Brien, P., Rossi, A., Perley, D. A., Im, M., Malesani, D. B., Antonelli, A., Covino, S., Choi, C., D'Avanzo, P., D'Elia, V., Dichiara, S., Fausey, H. M., Fugazza, D., Gomboc, A., Gorski, K. M., Granot, J., Guidorzi, C., Hanlon, L., Hartmann, D. H., Hudec, R., Jun, H. D., Kim, J., Kim, Y., Klose, S., Kluzniak, W., Kobayashi, S., Kouveliotou, C., Lidz, A., Marongiu, M., Martone, R., Meintjes, P., Mundell, C. G., Murphy, D., Nalewajko, K., Park, W. -K., Sz'ecsi, D., Smith, R. J., Stecklum, B., Steele, I. A., Strobl, J., Sung, H. -I, Updike, A., Urata, Y., and van der Horst, A. J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Gamma-ray bursts (GRBs) are ideal probes of the Universe at high redshift (z > 5), pinpointing the locations of the earliest star-forming galaxies and providing bright backlights that can be used to spectrally fingerprint the intergalactic medium and host galaxy during the period of reionization. Future missions such as Gamow Explorer are being proposed to unlock this potential by increasing the rate of identification of high-z GRBs to rapidly trigger observations from 6-10 m ground telescopes, JWST, and the Extremely Large Telescopes. Gamow was proposed to the NASA 2021 Medium-Class Explorer (MIDEX) program as a fast-slewing satellite featuring a wide-field lobster-eye X-ray telescope (LEXT) to detect and localize GRBs, and a 30 cm narrow-field multi-channel photo-z infrared telescope (PIRT) to measure their photometric redshifts using the Lyman-alpha dropout technique. To derive the PIRT sensitivity requirement we compiled a complete sample of GRB optical-near-infrared afterglows from 2008 to 2021, adding a total of 66 new afterglows to our earlier sample, including all known high-z GRB afterglows. We performed full light-curve and spectral-energy-distribution analyses of these afterglows to derive their true luminosity at very early times. For all the light curves, where possible, we determined the brightness at the time of the initial finding chart of Gamow, at different high redshifts and in different NIR bands. We then followed the evolution of the luminosity to predict requirements for ground and space-based follow-up. We find that a PIRT sensitivity of 15 micro-Jy (21 mag AB) in a 500 s exposure simultaneously in five NIR bands within 1000s of the GRB trigger will meet the Gamow mission requirement to recover > 80% of all redshifts at z > 5., Comment: 44 pages, 10 figures, 1 table. Accepted for publication in Astronomy and Astrophysics 15 Feb 2024. Abstract abridged for arXiv

Published
2024
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2. Science with a Small Two-Band UV-Photometry Mission I: Mission Description and Follow-up Observations of Stellar Transients

Author

Werner, N., Řípa, J., Thöne, C., Münz, F., Kurfürst, P., Jelínek, M., Hroch, F., Benáček, J., Topinka, M., Lukes-Gerakopoulos, G., Zajaček, M., Labaj, M., Prišegen, M., Krtička, J., Merc, J., Pál, A., Pejcha, O., Dániel, V., Jon, J., Šošovička, R., Gromeš, J., Václavík, J., Steiger, L., Segiňák, J., Behar, E., Tarem, S., Salh, J., Reich, O., Ben-Ami, S., Barschke, M. F., Berge, D., Tohuvavohu, A., Sivanandam, S., Bulla, M., Popov, S., and Chang, Hsiang-Kuang

Published
2024
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3. Observation of inverse Compton emission from a long $\gamma$-ray burst

Author

Acciari, V. A., Ansoldi, S., Antonelli, L. A., Engels, A. Arbet, Baack, D., Babić, A., Banerjee, B., de Almeida, U. Barres, Barrio, J. A., González, J. Becerra, Bednarek, W., Bellizzi, L., Bernardini, E., Berti, A., Besenrieder, J., Bhattacharyya, W., Bigongiari, C., Biland, A., Blanch, O., Bonnoli, G., Bošnjak, Ž., Busetto, G., Carosi, R., Ceribella, G., Chai, Y., Chilingaryan, A., Cikota, S., Colak, S. M., Colin, U., Colombo, E., Contreras, J. L., Cortina, J., Covino, S., D'Elia, V., Da Vela, P., Dazzi, F., De Angelis, A., De Lotto, B., Delfino, M., Delgado, J., Depaoli, D., Di Pierro, F., Di Venere, L., Espiñeira, E. Do Souto, Prester, D. Dominis, Donini, A., Dorner, D., Doro, M., Elsaesser, D., Ramazani, V. Fallah, Fattorini, A., Ferrara, G., Fidalgo, D., Foffano, L., Fonseca, M. V., Font, L., Fruck, C., Fukami, S., López, R. J. García, Garczarczyk, M., Gasparyan, S., Gaug, M., Giglietto, N., Giordano, F., Godinović, N., Green, D., Guberman, D., Hadasch, D., Hahn, A., Herrera, J., Hoang, J., Hrupec, D., Hütten, M., Inada, T., Inoue, S., Ishio, K., Iwamura, Y., Jouvin, L., Kerszberg, D., Kubo, H., Kushida, J., Lamastra, A., Lelas, D., Leone, F., Lindfors, E., Lombardi, S., Longo, F., López, M., López-Coto, R., López-Oramas, A., Loporchio, S., Fraga, B. Machado de Oliveira, Maggio, C., Majumdar, P., Makariev, M., Mallamaci, M., Maneva, G., Manganaro, M., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Mićanović, S., Miceli, D., Minev, M., Miranda, J. M., Mirzoyan, R., Molina, E., Moralejo, A., Morcuende, D., Moreno, V., Moretti, E., Munar-Adrover, P., Neustroev, V., Nigro, C., Nilsson, K., Ninci, D., Nishijima, K., Noda, K., Nogués, L., Nozaki, S., Paiano, S., Palatiello, M., Paneque, D., Paoletti, R., Paredes, J. M., Peñil, P., Peresano, M., Persic, M., Moroni, P. G. Prada, Prandini, E., Puljak, I., Rhode, W., Ribó, M., Rico, J., Righi, C., Rugliancich, A., Saha, L., Sahakyan, N., Saito, T., Sakurai, S., Satalecka, K., Schmidt, K., Schweizer, T., Sitarek, J., Šnidarić, I., Sobczynska, D., Somero, A., Stamerra, A., Strom, D., Strzys, M., Suda, Y., Surić, T., Takahashi, M., Tavecchio, F., Temnikov, P., Terzić, T., Teshima, M., Torres-Albà, N., Tosti, L., Vagelli, V., van Scherpenberg, J., Vanzo, G., Acosta, M. Vazquez, Vigorito, C. F., Vitale, V., Vovk, I., Will, M., Zarić, D., Nava, L., Veres, P., Bhat, P. N., Briggs, M. S., Cleveland, W. H., Hamburg, R., Hui, C. M., Mailyan, B., Preece, R. D., Roberts, O., von Kienlin, A., Wilson-Hodge, C. A., Kocevski, D., Arimoto, M., Tak, D., Asano, K., Axelsson, M., Barbiellini, G., Bissaldi, E., Dirirsa, F. Fana, Gill, R., Granot, J., McEnery, J., Razzaque, S., Piron, F., Racusin, J. L., Thompson, D. J., Campana, S., Bernardini, M. G., Kuin, N. P. M., Siegel, M. H., Cenko, S. Bradley, O'Brien, P., Capalbi, M., D'Aì, A., De Pasquale, M., Gropp, J., Klingler, N., Osborne, J. P., Perri, M., Starling, R., Tagliaferri, G., Tohuvavohu, A., Ursi, A., Tavani, M., Cardillo, M., Casentini, C., Piano, G., Evangelista, Y., Verrecchia, F., Pittori, C., Lucarelli, F., Bulgarelli, A., Parmiggiani, N., Anderson, G. E., Anderson, J. P., Bernardi, G., Bolmer, J., Caballero-García, M. D., Carrasco, I. M., Castellón, A., Segura, N. Castro, Castro-Tirado, A. J., Cherukuri, S. V., Cockeram, A. M., D'Avanzo, P., Di Dato, A., Diretse, R., Fender, R. P., Fernández-García, E., Fynbo, J. P. U., Fruchter, A. S., Greiner, J., Gromadzki, M., Heintz, K. E., Heywood, I., van der Horst, A. J., Hu, Y. -D., Inserra, C., Izzo, L., Jaiswal, V., Jakobsson, P., Japelj, J., Kankare, E., Kann, D. A., Kouveliotou, C., Klose, S., Levan, A. J., Li, X. Y., Lotti, S., Maguire, K., Malesani, D. B., Manulis, I., Marongiu, M., Martin, S., Melandri, A., Michałowski, M., Miller-Jones, J. C. A., Misra, K., Moin, A., Mooley, K. P., Nasri, S., Nicholl, M., Noschese, A., Novara, G., Pandey, S. B., Peretti, E., del Pulgar, C. J. Pérez, Pérez-Torres, M. A., Perley, D. A., Piro, L., Ragosta, F., Resmi, L., Ricci, R., Rossi, A., Sánchez-Ramírez, R., Selsing, J., Schulze, S., Smartt, S. J., Smith, I. A., Sokolov, V. V., Stevens, J., Tanvir, N. R., Thóne, C. C., Tiengo, A., Tremou, E., Troja, E., Postigo, A. de Ugarte, Vergani, S. D., Wieringa, M., Woudt, P. A., Xu, D., Yaron, O., and Young, D. R.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Long-duration gamma-ray bursts (GRBs) originate from ultra-relativistic jets launched from the collapsing cores of dying massive stars. They are characterised by an initial phase of bright and highly variable radiation in the keV-MeV band that is likely produced within the jet and lasts from milliseconds to minutes, known as the prompt emission. Subsequently, the interaction of the jet with the external medium generates external shock waves, responsible for the afterglow emission, which lasts from days to months, and occurs over a broad energy range, from the radio to the GeV bands. The afterglow emission is generally well explained as synchrotron radiation by electrons accelerated at the external shock. Recently, an intense, long-lasting emission between 0.2 and 1 TeV was observed from the GRB 190114C. Here we present the results of our multi-frequency observational campaign of GRB~190114C, and study the evolution in time of the GRB emission across 17 orders of magnitude in energy, from $5\times10^{-6}$ up to $10^{12}$\,eV. We find that the broadband spectral energy distribution is double-peaked, with the TeV emission constituting a distinct spectral component that has power comparable to the synchrotron component. This component is associated with the afterglow, and is satisfactorily explained by inverse Compton upscattering of synchrotron photons by high-energy electrons. We find that the conditions required to account for the observed TeV component are not atypical, supporting the possibility that inverse Compton emission is commonly produced in GRBs.

Published
2020
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4. GRB171010A / SN2017htp: a GRB-SN at z=0.33

Author

Melandri, A., Malesani, D. B., Izzo, L., Japelj, J., Vergani, S. D., Schady, P., Carracedo, A. Sagues, Postigo, A. de Ugarte, Anderson, J. P., Barbarino, C., Bolmer, J., Breeveld, A., Calissendorff, P., Campana, S., Cano, Z., Carini, R., Covino, S., D'Avanzo, P., D'Elia, V., della Valle, M., De Pasquale, M., Fynbo, J. P. U., Gromadzki, M., Hammer, F., Hartmann, D. H., Heintz, K. E., Inserra, C., Jakobsson, P., Kann, D. A., Kotilainen, J., Maguire, K., Masetti, N., Nicholl, M., E., F. Olivares, Pugliese, G., Rossi, A., Salvaterra, R., Sollerman, J., Stone, M. B., Tagliaferri, G., Tomasella, L., Thone, C. C., Xu, D., and Young, D. R.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The number of supernovae known to be connected with long-duration gamma-ray bursts is increasing and the link between these events is no longer exclusively found at low redshift ($z \lesssim 0.3$) but is well established also at larger distances. We present a new case of such a liaison at $z = 0.33$ between GRB\,171010A and SN\,2017htp. It is the second closest GRB with an associated supernova of only three events detected by Fermi-LAT. The supernova is one of the few higher redshift cases where spectroscopic observations were possible and shows spectral similarities with the well-studied SN\,1998bw, having produced a similar Ni mass ($M_{\rm Ni}=0.33\pm0.02 ~\rm{M_{\odot}}$) with slightly lower ejected mass ($M_{\rm ej}=4.1\pm0.7~\rm{M_{\odot}}$) and kinetic energy ($E_{\rm K} = 8.1\pm2.5 \times 10^{51} ~\rm{erg}$). The host-galaxy is bigger in size than typical GRB host galaxies, but the analysis of the region hosting the GRB revealed spectral properties typically observed in GRB hosts and showed that the progenitor of this event was located in a very bright HII region of its face-on host galaxy, at a projected distance of $\sim$ 10 kpc from its galactic centre. The star-formation rate (SFR$_{GRB} \sim$ 0.2 M$_{\odot}$~yr$^{-1}$) and metallicity (12 + log(O/H) $\sim 8.15 \pm 0.10$) of the GRB star-forming region are consistent with those of the host galaxies of previously studied GRB-SN systems., Comment: Accepted for publication by MNRAS, 10 pages, 8 figures, 5 tables

Published
2019
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5. The first six months of the Advanced LIGO's and Advanced Virgo's third observing run with GRANDMA

Author

Antier, S., Agayeva, S., Aivazyan, V., Alishov, S., Arbouch, E., Baransky, A., Barynova, K., Bai, J. M., Basa, S., Beradze, S., Bertin, E., Berthier, J., Blazek, M., Boer, M., Burkhonov, O., Burrell, A., Cailleau, A., Chabert, B., Chen, J. C., Christensen, N., Coleiro, A., Cordier, B., Corre, D., Coughlin, M. W., Coward, D., Crisp, H., Delattre, C., Dietrich, T., Ducoin, J. -G., Duverne, P. -A., Marchal-Duva, G., Gendre, B., Eymar, L., Fock-Hang, P., Han, X., Hello, P., Howell, E. J., Inasaridze, R., Ismailov, N., Kann, D. A., Kapanadze, G., Klotz, A., Kochiashvili, N., Lachaud, C., Leroy, N., Van Su, A. Le, Lin, W. L., Li, W. X., Lognone, P., Marron, R., Mo, J., Moore, J., Natsvlishvili, R., Noysena, K., Perrigault, S., Peyrot, A., Samadov, D., Sadibekova, T., Simon, A., Stachie, C., Teng, J. P., Thierry, P., Thone, C. C., Tillayev, Y., Turpin, D., Postigo, A. de Ugarte, Vachier, F., Vardosanidze, M., Vasylenko, V., Vidadi, Z., Wang, X. F., Wang, C. J., Wei, J., Yan, S. Y., Zhang, J. C., Zhang, J. J., and Zhang, X. H.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present the Global Rapid Advanced Network Devoted to the Multi-messenger Addicts (GRANDMA). The network consists of 21 telescopes with both photometric and spectroscopic facilities. They are connected together thanks to a dedicated infrastructure. The network aims at coordinating the observations of large sky position estimates of transient events to enhance their follow-up and reduce the delay between the initial detection and the optical confirmation. The GRANDMA program mainly focuses on follow-up of gravitational-wave alerts to find and characterise the electromagnetic counterpart during the third observational campaign of the Advanced LIGO and Advanced Virgo detectors. But it allows for any follow-up of transient alerts involving neutrinos or gamma-ray bursts, even with poor spatial localisation. We present the different facilities, tools, and methods we developed for this network, and show its efficiency using observations of LIGO/Virgo S190425z, a binary neutron star merger candidate. We furthermore report on all GRANDMA follow-up observations performed during the first six months of the LIGO-Virgo observational campaign, and we derive constraints on the kilonova properties assuming that the events' locations were imaged by our telescopes., Comment: 26 pages, 4 figures

Published
2019
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6. The optical identifcation of events with poorly defined locations: The case of the Fermi GBM GRB140801A

Author

Lipunov, V. M., Gorosabel, J., Pruzhinskaya, M. V., Postigo, A. de Ugarte, Pelassa, V., Tsvetkova, A. E., Sokolov, I. V., Kann, D. A., Xu, Dong, Gorbovskoy, E. S., Krushinski, V. V., Kornilov, V. G., Balanutsa, P. V., Boronina, S. V., Budnev, N. M., Cano, Z., Castro-Tirado, A. J., Chazov, V. V., Connaughton, V., Delvaux, C., Frederiks, D. D., Fynbo, J. F. U., Gabovich, A. V., Goldstein, A., Greiner, J., Gress, O. A., Ivanov, K. I., Jakobsson, P., Klose, S., Knust, F., Komarova, V. N., Konstantinov, E., Krylov, A. V., Kuvshinov, D. A., Kuznetsov, A. S., Lipunova, G. V., Moskvitin, A. S., Pal'shin, V. D., Pandey, S. B., Poleshchuk, V. A., Schmidl, S., Sergienko, Yu. P., Sinyakov, E. V., Schulze, S., Sokolov, V. V., Sokolova, T. N., Sparre, M., Thone, C. C., Tlatov, A. G., Tyurina, N. V., Ulanov, M. V., Yazev, S. A., and Yurkov, V. V.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We report the early discovery of the optical afterglow of gamma-ray burst (GRB) 140801A in the 137 deg$^2$ 3-$\sigma$ error-box of the Fermi Gamma-ray Burst Monitor (GBM). MASTER is the only observatory that automatically react to all Fermi alerts. GRB 140801A is one of the few GRBs whose optical counterpart was discovered solely from its GBM localization. The optical afterglow of GRB 140801A was found by MASTER Global Robotic Net 53 sec after receiving the alert, making it the fastest optical detection of a GRB from a GBM error-box. Spectroscopy obtained with the 10.4-m Gran Telescopio Canarias and the 6-m BTA of SAO RAS reveals a redshift of $z=1.32$. We performed optical and near-infrared photometry of GRB 140801A using different telescopes with apertures ranging from 0.4-m to 10.4-m. GRB 140801A is a typical burst in many ways. The rest-frame bolometric isotropic energy release and peak energy of the burst is $E_\mathrm{iso} = 5.54_{-0.24}^{+0.26} \times 10^{52}$ erg and $E_\mathrm{p, rest}\simeq280$ keV, respectively, which is consistent with the Amati relation. The absence of a jet break in the optical light curve provides a lower limit on the half-opening angle of the jet $\theta=6.1$ deg. The observed $E_\mathrm{peak}$ is consistent with the limit derived from the Ghirlanda relation. The joint Fermi GBM and Konus-Wind analysis shows that GRB 140801A could belong to the class of intermediate duration. The rapid detection of the optical counterpart of GRB 140801A is especially important regarding the upcoming experiments with large coordinate error-box areas., Comment: in press MNRAS, 2015

Published
2015
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7. The high-redshift gamma-ray burst GRB140515A

Author

Melandri, A., Bernardini, M. G., D'Avanzo, P., Sanchez-Ramirez, R., Nappo, F., Nava, L., Japelj, J., Postigo, A. de Ugarte, Oates, S., Campana, S., Covino, S., D'Elia, V., Ghirlanda, G., Gafton, E., Ghisellini, G., Gnedin, N., Goldoni, P., Gorosabel, J., Libbrecht, T., Malesani, D., Salvaterra, R., Thone, C. C., Vergani, S. D., Xu, D., and Tagliaferri, G.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

High-redshift gamma-ray bursts have several advantages for the study of the distant universe, providing unique information about the structure and properties of the galaxies in which they exploded. Spectroscopic identification with large ground-based telescopes has improved our knowledge of the class of such distant events. We present the multi-wavelength analysis of the high-$z$ Swift gamma-ray burst GRB140515A ($z = 6.327$). The best estimate of the neutral hydrogen fraction of the intergalactic medium (IGM) towards the burst is $x_{HI} \leq 0.002$. The spectral absorption lines detected for this event are the weakest lines ever observed in gamma-ray burst afterglows, suggesting that GRB140515A exploded in a very low density environment. Its circum-burst medium is characterised by an average extinction (A$_{\rm V} \sim 0.1$) that seems to be typical of $z \ge 6$ events. The observed multi-band light curves are explained either with a very flat injected spectrum ($p = 1.7$) or with a multi-component emission ($p = 2.1$). In the second case a long-lasting central engine activity is needed in order to explain the late time X-ray emission. The possible origin of GRB140515A from a Pop III (or from a Pop II stars with local environment enriched by Pop III) massive star is unlikely., Comment: 10 pages, 8 figures, 5 tables, submitted to Astronomy & Astrophysics

Published
2015
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8. GRB 140606B / iPTF14bfu: Detection of shock-breakout emission from a cosmological gamma-ray burst?

Author

Cano, Z., Postigo, A. de Ugarte, Perley, D., Kruhler, T., Margutti, R., Friis, M., Malesani, D., Jakobsson, P., Fynbo, J. P. U., Gorosabel, J., Hjorth, J., Sanchez-Ramirez, R., Schulze, S., Tanvir, N. R., Thone, C. C., and Xu, D.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present optical and near-infrared photometry of GRB~140606B ($z=0.384$), and optical photometry and spectroscopy of its associated supernova (SN). The results of our modelling indicate that the bolometric properties of the SN ($M_{\rm Ni} = 0.4\pm0.2$~M$_{\odot}$, $M_{\rm ej} = 5\pm2$~M$_{\odot}$, and $E_{\rm K} = 2\pm1 \times 10^{52}$ erg) are fully consistent with the statistical averages determined for other GRB-SNe. However, in terms of its $\gamma$-ray emission, GRB~140606B is an outlier of the Amati relation, and occupies the same region as low-luminosity ($ll$) and short GRBs. The $\gamma$-ray emission in $ll$GRBs is thought to arise in some or all events from a shock-breakout (SBO), rather than from a jet. The measured peak photon energy ($E_{\rm p}\approx800$ keV) is close to that expected for $\gamma$-rays created by a SBO ($\gtrsim1$ MeV). Moreover, based on its position in the $M_{V,\rm p}$--$L_{\rm iso,\gamma}$~plane and the $E_{\rm K}$--$\Gamma\beta$~plane, GRB~140606B has properties similar to both SBO-GRBs and jetted-GRBs. Additionally, we searched for correlations between the isotropic $\gamma$-ray emission and the bolometric properties of a sample of GRB-SNe, finding that no statistically significant correlation is present. The average kinetic energy of the sample is $\bar{E}_{\rm K} = 2.1\times10^{52}$ erg. All of the GRB-SNe in our sample, with the exception of SN 2006aj, are within this range, which has implications for the total energy budget available to power both the relativistic and non-relativistic components in a GRB-SN event., Comment: Pre-print version: 14 Figs, 9 Tables, accepted at MNRAS. Comments and discussion are welcomed

Published
2015
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9. The host of GRB 171205A in 3D: A resolved multiwavelength study of a rare grand-design spiral GRB host.

Author

Thöne, C. C., de Ugarte Postigo, A., Izzo, L., Michalowski, M. J., Levan, A. J., Leung, J. K., Agüí Fernández, J. F., Géron, T., Friesen, R., Christensen, L., Covino, S., D'Elia, V., Hartmann, D. H., Jakobsson, P., De Pasquale, M., Pugliese, G., Rossi, A., Schady, P., Wiersema, K., and Zafar, T.

Subjects
*INTEGRAL field spectroscopy, *SPIRAL galaxies, *STAR formation, *STELLAR populations, *GALACTIC dynamics
Abstract

Long GRB hosts at z < 1 are usually low-mass, low-metallicity star-forming galaxies. Here we present the most detailed, spatially resolved study of the host of GRB 171205A so far, a grand-design barred spiral galaxy at z = 0.036. Our analysis includes MUSE integral field spectroscopy complemented with high-spatial-resolution UV/VIS HST imaging and CO(1−0) and H I 21 cm data. The GRB is located in a small star-forming region in a spiral arm of the galaxy at a deprojected distance of ∼8 kpc from the center. The galaxy shows a smooth negative metallicity gradient and the metallicity at the GRB site is half solar, slightly below the mean metallicity at the corresponding distance from the center. Star formation in this galaxy is concentrated in a few H II regions between 5 and 7 kpc from the center and at the end of the bar, inwards from the GRB region; however the H II region hosting the GRB is in the top 10% of the regions with the highest specific star-formation rate. The stellar population at the GRB site has a very young component (< 5 Myr) that contributes a significant part of the light. Ionized and molecular gas show only minor deviations at the end of the bar. A parallel study found an asymmetric H I distribution and some additional gas near the position of the GRB, which might explain the star-forming region of the GRB site. Our study shows that long GRBs can occur in many types of star-forming galaxies; however the actual GRB sites have consistently low metallicity, high star formation rates, and a young population. Furthermore, gas inflow or interactions triggering the star formation producing the GRB progenitor might not be evident in ionized or even molecular gas but only in H I. [ABSTRACT FROM AUTHOR]

Published
2024
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10. Varying linear polarisation in the dust-free gamma-ray burst 210610B.

Author

Agüí Fernández, J. F., de Ugarte Postigo, A., Thöne, C. C., Kobayashi, S., Rossi, A., Toma, K., Jelínek, M., Kann, D. A., Covino, S., Wiersema, K., Hartmann, D., Jakobsson, P., Martin-Carrillo, A., Melandri, A., De Pasquale, M., Pugliese, G., Savaglio, S., Starling, R. L. C., Štrobl, J., and Della Valle, M.

Subjects
SPECTRAL energy distribution, VERY large telescopes, INTERSTELLAR medium, LIGHT curves, OPTICAL spectroscopy, GAMMA ray bursts
Abstract

Context. Long gamma-ray bursts (GRBs) are produced by the collapse of some very massive stars, that emit ultra-relativistic jets. When the jets collide with the interstellar medium they decelerate and generate the so-called afterglow emission, which has been observed to be polarised. Aims. We study the polarimetric evolution of the GRB 210610B afterglow, at z = 1.1341. This allows us to evaluate the role of geometric and/or magnetic mechanisms in the GRB afterglow polarisation. Methods. We observed GRB 210610B using imaging polarimetry with CAFOS on the 2.2 m Calar Alto Telescope and FORS2 on the 4 × 8.1 m Very Large Telescope. Complementary optical spectroscopy was obtained with OSIRIS on the 10.4 m Gran Telescopio Canarias. We studied the GRB light-curve from X-rays to the optical bands and the Spectral Energy Distribution (SED). This allowed us to strongly constrain the line-of-sight extinction. Finally, we studied the GRB host galaxy using optical to NIR data to fit the SED and derive its integrated properties. Results. GRB 210610B had a bright afterglow with a negligible line-of-sight extinction. Polarimetry was obtained at three epochs: during an early plateau phase, at the time when the light curve breaks, and after the light curve steepened. We observe an initial polarisation of ∼4% that goes to zero at the time of the break, and it then again increases to ∼2%, with a change in the position angle of 54 ± 9 deg. The spectrum shows features with very low equivalent widths. This indicate a small amount of material in the line of sight within the host. Conclusions. The lack of dust and the low amount of material in the line of sight to GRB 210610B allowed us to study the intrinsic polarisation of the GRB optical afterglow. The GRB polarisation signals are consistent with ordered magnetic fields in refreshed shock or/and hydrodynamics-scale turbulent fields in the forward shock. [ABSTRACT FROM AUTHOR]

Published
2024
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11. Correction to: Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z = 2−4 using JWST

Author

Schady, P, primary, Yates, R M, additional, Christensen, L, additional, De Cia, A, additional, Rossi, A, additional, D’Elia, V, additional, Heintz, K E, additional, Jakobsson, P, additional, Laskar, T, additional, Levan, A, additional, Salvaterra, R, additional, Starling, R L C, additional, Tanvir, N R, additional, Thöne, C C, additional, Vergani, S, additional, Wiersema, K, additional, Arabsalmani, M, additional, Chen, H -W, additional, De Pasquale, M, additional, Fruchter, A, additional, Fynbo, J P U, additional, García-Benito, R, additional, Gompertz, B, additional, Hartmann, D, additional, Kouveliotou, C, additional, Milvang-Jensen, B, additional, Palazzi, E, additional, Perley, D A, additional, Piranomonte, S, additional, Pugliese, G, additional, Savaglio, S, additional, Sbarufatti, B, additional, Schulze, S, additional, Tagliaferri, G, additional, de Ugarte Postigo, A, additional, Watson, D, additional, and Wiseman, P, additional

Published
2024
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13. Multi-band analyses of the bright GRB 230812B and the associated SN2023pel

Author

Hussenot-Desenonges, T, primary, Wouters, T, additional, Guessoum, N, additional, Abdi, I, additional, Abulwfa, A, additional, Adami, C, additional, Fernández, J F Agüí, additional, Ahumada, T, additional, Aivazyan, V, additional, Akl, D, additional, Anand, S, additional, Andrade, C M, additional, Antier, S, additional, Ata, S A, additional, D’Avanzo, P, additional, Azzam, Y A, additional, Baransky, A, additional, Basa, S, additional, Blazek, M, additional, Bendjoya, P, additional, Beradze, S, additional, Boumis, P, additional, Bremer, M, additional, Brivio, R, additional, Buat, V, additional, Bulla, M, additional, Burkhonov, O, additional, Burns, E, additional, Cenko, S B, additional, Coughlin, M W, additional, Corradi, W, additional, Daigne, F, additional, Dietrich, T, additional, Dornic, D, additional, Ducoin, J-G, additional, Duverne, P-A, additional, Elhosseiny, E G, additional, Elnagahy, F I, additional, El-Sadek, M A, additional, Ferro, M, additional, Le Floc’h, E, additional, Freeberg, M, additional, Fynbo, J P U, additional, Götz, D, additional, Gurbanov, E, additional, Hamed, G M, additional, Hasanov, E, additional, Healy, B F, additional, Heintz, K E, additional, Hello, P, additional, Inasaridze, R, additional, Iskandar, A, additional, Ismailov, N, additional, Izzo, L, additional, Jhawar, S, additional, du Laz, T Jegou, additional, Kamel, T M, additional, Karpov, S, additional, Klotz, A, additional, Koulouridis, E, additional, Kuin, N P, additional, Kochiashvili, N, additional, Leonini, S, additional, Lu, K-X, additional, Malesani, D B, additional, Mašek, M, additional, Mao, J, additional, Melandri, A, additional, Mihov, B M, additional, Natsvlishvili, R, additional, Navarete, F, additional, Nedora, V, additional, Nicolas, J, additional, Odeh, M, additional, Palmerio, J, additional, Pang, P T H, additional, De Pasquale, M, additional, Peng, H W, additional, Pormente, S, additional, Peloton, J, additional, Pradier, T, additional, Pyshna, O, additional, Rajabov, Y, additional, Rakotondrainibe, N A, additional, Rivet, J-P, additional, Rousselot, L, additional, Saccardi, A, additional, Sasaki, N, additional, Schneider, B, additional, Serrau, M, additional, Shokry, A, additional, Slavcheva-Mihova, L, additional, Simon, A, additional, Sokoliuk, O, additional, Srinivasaragavan, G, additional, Strausbaugh, R, additional, Takey, A, additional, Tanvir, N R, additional, Thöne, C C, additional, Tillayev, Y, additional, Melo, I Tosta e, additional, Turpin, D, additional, de Ugarte Postigo, A, additional, Vasylenko, V, additional, Vergani, S D, additional, Vidadi, Z, additional, Xu, D, additional, Wang, L T, additional, Wang, X F, additional, Winters, J M, additional, Zhang, X-L, additional, and Zhu, Z, additional

Published
2024
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14. Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z = 2−4 using JWST

Author

Schady, P, primary, Yates, R M, additional, Christensen, L, additional, De Cia, A, additional, Rossi, A, additional, D’Elia, V, additional, Heintz, K E, additional, Jakobsson, P, additional, Laskar, T, additional, Levan, A, additional, Salvaterra, R, additional, Starling, R L C, additional, Tanvir, N R, additional, Thöne, C C, additional, Vergani, S, additional, Wiersema, K, additional, Arabsalmani, M, additional, Chen, H -W, additional, De Pasquale, M, additional, Fruchter, A, additional, Fynbo, J P U, additional, García-Benito, R, additional, Gompertz, B, additional, Hartmann, D, additional, Kouveliotou, C, additional, Milvang-Jensen, B, additional, Palazzi, E, additional, Perley, D A, additional, Piranomonte, S, additional, Pugliese, G, additional, Savaglio, S, additional, Sbarufatti, B, additional, Schulze, S, additional, Tagliaferri, G, additional, Postigo, A de Ugarte, additional, Watson, D, additional, and Wiseman, P, additional

Published
2024
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15. Fires in the deep: The luminosity distribution of early-time gamma-ray-burst afterglows in light of the Gamow Explorer sensitivity requirements

Author

Kann, D.A., primary, White, N.E., additional, Ghirlanda, G., additional, Oates, S.R., additional, Melandri, A., additional, Jelinek, M., additional, de Ugarte Postigo, A., additional, Levan, A.J., additional, Martin-Carrillo, A., additional, Paek, G. S.-H., additional, Izzo, L., additional, Blazek, M., additional, Thöne, C., additional, Agüi Fernandez, J.F., additional, Salvaterra, R., additional, Tanvir, N.R., additional, Chang, T.-C., additional, O'Brien, P., additional, Rossi, A., additional, Perley, D.A., additional, Im, M., additional, Malesani, D.B., additional, Antonelli, A., additional, Covino, S., additional, Choi, C., additional, Davanzo, P., additional, Délia, V., additional, Dichiara, S., additional, Fausey, H.M., additional, Fugazza, D., additional, Gomboc, A., additional, Gorski, K.M., additional, Granot, J., additional, Guidorzi, C., additional, Hanlon, L., additional, Hartmann, D.H., additional, Hudec, R., additional, Jun, H.D., additional, Kim, J., additional, Kim, Y., additional, Klose, S., additional, Kluzniak, W., additional, Kobayashi, S., additional, Kouveliotou, C., additional, Lidz, A., additional, Marongiu, M., additional, Martone, R., additional, Meintjes, P., additional, Mundell, C.G., additional, Murphy, D., additional, Nalewajko, K., additional, Park, W.-K., additional, Szécsi, D., additional, Smith, R.J., additional, Stecklum, B., additional, Steele, I.A., additional, Štrobl, J., additional, Sung, H.-I-, additional, Updike, A., additional, Urata, Y., additional, and van der Horst, A.J., additional

Published
2024
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16. A Trio of GRB-SNe: GRB 120729A, GRB 130215A / SN 2013ez and GRB 130831A / SN 2013fu

Author

Cano, Z., Postigo, A. de Ugarte, Pozanenko, A., Butler, N., Thone, C. C., Guidorzi, C., Kruhler, T., Gorosabel, J., Jakobsson, P., Leloudas, G., Malesani, D., Hjorth, J., Melandri, A., Mundell, C., Wiersema, K., D'Avanzo, P., Schulze, S., Gomboc, A., Johansson, A., Zheng, W., Kann, D. A., Knust, F., Varela, K., Akerlof, C. W., Bloom, J., Burkhonov, O., Cooke, E., de Diego, J. A., Dhungana, G., Farina, C., Ferrante, F. V., Flewelling, H. A., Fox, O. D., Fynbo, J., Gehrels, N., Georgiev, L., Gonzalez, J. J., Greiner, J., Guver, T., Hartoog, O., Hatch, N., Jelinek, M, Kehoe, R., Klose, S., Klunko, E., Kopac, D., Kutyrev, A., Krugl, Y., Lee, W. H., Levan, A., Linkov, V., Matkin, A., Minikulov, N., Molotov, I., Prochaska, J. Xavier, Richer, M. G., Roman-Zuniga, C. G., Rumyantsev, V., Sanchez-Ramirez, R., Steele, I., Tanvir, N. R., Volnova, A., Watson, A. M., Xu, D., and Yuan, F.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present optical and near-infrared (NIR) photometry for three gamma-ray burst supernovae (GRB-SNe): GRB 120729A, GRB 130215A / SN 2013ez and GRB 130831A / SN 2013fu. In the case of GRB 130215A / SN 2013ez, we also present optical spectroscopy at t-t0=16.1 d, which covers rest-frame 3000-6250 Angstroms. Based on Fe II (5169) and Si (II) (6355), our spectrum indicates an unusually low expansion velocity of 4000-6350 km/s, the lowest ever measured for a GRB-SN. Additionally, we determined the brightness and shape of each accompanying SN relative to a template supernova (SN 1998bw), which were used to estimate the amount of nickel produced via nucleosynthesis during each explosion. We find that our derived nickel masses are typical of other GRB-SNe, and greater than those of SNe Ibc that are not associated with GRBs. For GRB 130831A / SN 2013fu, we use our well-sampled R-band light curve (LC) to estimate the amount of ejecta mass and the kinetic energy of the SN, finding that these too are similar to other GRB-SNe. For GRB 130215A, we take advantage of contemporaneous optical/NIR observations to construct an optical/NIR bolometric LC of the afterglow. We fit the bolometric LC with the millisecond magnetar model of Zhang & Meszaros (2001), which considers dipole radiation as a source of energy injection to the forward shock powering the optical/NIR afterglow. Using this model we derive an initial spin period of P=12 ms and a magnetic field of B=1.1 x 10^15 G, which are commensurate with those found for proposed magnetar central engines of other long-duration GRBs., Comment: Archive copy - 24 pages, 12 Figures, 3 Tables. Submitted to A&A

Published
2014
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17. Varying linear polarisation in the dust-free GRB 210610B

Author

Fernández, J. F. Agüí, Postigo, A. de Ugarte, Thöne, C. C., Kobayashi, S., Rossi, A., Toma, K., Jelínek, M., Kann, D. A., Covino, S., Wiersema, K., Hartmann, D., Jakobsson, P., Martin-Carrillo, A., Melandri, A., De Pasquale, M., Pugliese, G., Savaglio, S., Starling, R. L. C., Štrobl, J., Della Valle, M., de Wet, S., Zafar, T., Fernández, J. F. Agüí, Postigo, A. de Ugarte, Thöne, C. C., Kobayashi, S., Rossi, A., Toma, K., Jelínek, M., Kann, D. A., Covino, S., Wiersema, K., Hartmann, D., Jakobsson, P., Martin-Carrillo, A., Melandri, A., De Pasquale, M., Pugliese, G., Savaglio, S., Starling, R. L. C., Štrobl, J., Della Valle, M., de Wet, S., and Zafar, T.

Abstract

Long gamma ray bursts (GRBs) are produced by the collapse of some very massive stars, which emit ultra-relativistic jets. When the jets collide with the interstellar medium they decelerate and generate the so-called afterglow emission, which has been observed to be polarised. In this work we study the polarimetric evolution of GRB 210610B afterglow, at $z = 1.1341$. This allows to evaluate the role of geometric and/or magnetic mechanisms in the GRB afterglow polarisation. We observed GRB 210610B using imaging polarimetry with CAFOS on the 2.2 m Calar Alto Telescope and FORS2 on the 4 $\times$ 8.1 m Very Large Telescope. Complementary optical spectroscopy was obtained with OSIRIS on the 10.4 m Gran Telescopio Canarias. We study the GRB light-curve from X-rays to optical bands and the Spectral Energy Distribution (SED). This allows us to strongly constrain the line-of-sight extinction. Finally, we study the GRB host galaxy using optical/NIR data to fit the SED and derive its integrated properties. GRB 210610B had a bright afterglow with a negligible line-of-sight extinction. Polarimetry was obtained at three epochs: during an early plateau phase, at the time when the light curve breaks, and after the light curve steepened. We observe an initial polarisation of $\sim 4\%$ that goes to zero at the time of the break, and then increases again to $\sim 2\%$ with a change of the position angle of $54 \pm 9$ deg. The spectrum show features with very low equivalent widths, indicating a small amount of material in the line-of-sight within the host. The lack of dust and the low amount of material on the line-of-sight to GRB 210610B allow us to study the intrinsic polarisation of the GRB optical afterglow. We find the GRB polarisation signals are consistent with ordered magnetic fields in refreshed shock or/and hydrodynamics-scale turbulent fields in the forward shock., Comment: 17 pages, 7 figures, 5 tables. Accepted for publication in Astronomy and Astrophysics 23 Feb 2024

Published
2024

18. Multiband analyses of the bright GRB 230812B and the associated SN2023pel

Author

Sub GRASP, Gravitational and Subatomic Physics (GRASP), Hussenot-Desenonges, T., Wouters, T., Guessoum, N., Abdi, I., Abulwfa, A., Adami, C., Agüí Fernández, J. F., Ahumada, T., Aivazyan, V., Akl, D., Anand, S., Andrade, C. M., Antier, S., Ata, S. A., D'Avanzo, P., Azzam, Y. A., Baransky, A., Basa, S., Blazek, M., Bendjoya, P., Beradze, S., Boumis, P., Bremer, M., Brivio, R., Buat, V., Bulla, M., Burkhonov, O., Burns, E., Cenko, S. B., Coughlin, M. W., Corradi, W., Daigne, F., Dietrich, T., Dornic, D., Ducoin, J. G., Duverne, P. A., Elhosseiny, E. G., Elnagahy, F. I., El-Sadek, M. A., Ferro, M., Le Floc'H, E., Freeberg, M., Fynbo, J. P.U., Götz, D., Gurbanov, E., Hamed, G. M., Hasanov, E., Healy, B. F., Heintz, K. E., Hello, P., Inasaridze, R., Iskandar, A., Ismailov, N., Izzo, L., Jhawar, S., Jegou du Laz, T., Kamel, T. M., Karpov, S., Klotz, A., Koulouridis, E., Kuin, N. P., Kochiashvili, N., Leonini, S., Lu, K. X., Malesani, D. B., Mašek, M., Mao, J., Melandri, A., Mihov, B. M., Natsvlishvili, R., Navarete, F., Nedora, V., Nicolas, J., Odeh, M., Palmerio, J., Pang, P. T.H., De Pasquale, M., Peng, H. W., Pormente, S., Peloton, J., Pradier, T., Pyshna, O., Rajabov, Y., Rakotondrainibe, N. A., Rivet, J. P., Rousselot, L., Saccardi, A., Sasaki, N., Schneider, B., Serrau, M., Shokry, A., Slavcheva-Mihova, L., Simon, A., Sokoliuk, O., Srinivasaragavan, G., Strausbaugh, R., Takey, A., Tanvir, N. R., Thöne, C. C., Tillayev, Y., Tosta e Melo, I., Turpin, D., de Ugarte Postigo, A., Vasylenko, V., Vergani, S. D., Vidadi, Z., Xu, D., Wang, L. T., Wang, X. F., Winters, J. M., Zhang, X. L., Zhu, Z., Sub GRASP, Gravitational and Subatomic Physics (GRASP), Hussenot-Desenonges, T., Wouters, T., Guessoum, N., Abdi, I., Abulwfa, A., Adami, C., Agüí Fernández, J. F., Ahumada, T., Aivazyan, V., Akl, D., Anand, S., Andrade, C. M., Antier, S., Ata, S. A., D'Avanzo, P., Azzam, Y. A., Baransky, A., Basa, S., Blazek, M., Bendjoya, P., Beradze, S., Boumis, P., Bremer, M., Brivio, R., Buat, V., Bulla, M., Burkhonov, O., Burns, E., Cenko, S. B., Coughlin, M. W., Corradi, W., Daigne, F., Dietrich, T., Dornic, D., Ducoin, J. G., Duverne, P. A., Elhosseiny, E. G., Elnagahy, F. I., El-Sadek, M. A., Ferro, M., Le Floc'H, E., Freeberg, M., Fynbo, J. P.U., Götz, D., Gurbanov, E., Hamed, G. M., Hasanov, E., Healy, B. F., Heintz, K. E., Hello, P., Inasaridze, R., Iskandar, A., Ismailov, N., Izzo, L., Jhawar, S., Jegou du Laz, T., Kamel, T. M., Karpov, S., Klotz, A., Koulouridis, E., Kuin, N. P., Kochiashvili, N., Leonini, S., Lu, K. X., Malesani, D. B., Mašek, M., Mao, J., Melandri, A., Mihov, B. M., Natsvlishvili, R., Navarete, F., Nedora, V., Nicolas, J., Odeh, M., Palmerio, J., Pang, P. T.H., De Pasquale, M., Peng, H. W., Pormente, S., Peloton, J., Pradier, T., Pyshna, O., Rajabov, Y., Rakotondrainibe, N. A., Rivet, J. P., Rousselot, L., Saccardi, A., Sasaki, N., Schneider, B., Serrau, M., Shokry, A., Slavcheva-Mihova, L., Simon, A., Sokoliuk, O., Srinivasaragavan, G., Strausbaugh, R., Takey, A., Tanvir, N. R., Thöne, C. C., Tillayev, Y., Tosta e Melo, I., Turpin, D., de Ugarte Postigo, A., Vasylenko, V., Vergani, S. D., Vidadi, Z., Xu, D., Wang, L. T., Wang, X. F., Winters, J. M., Zhang, X. L., and Zhu, Z.

Published
2024

19. Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at z = 2−4 using JWST

Author

Schady, P, Yates, R M, Christensen, L, De cia, A, Rossi, A, D’elia, V, Heintz, K E, Jakobsson, P, Laskar, T, Levan, A, Salvaterra, R, Starling, R L C, Tanvir, N R, Thöne, C C, Vergani, S, Wiersema, K, Arabsalmani, M, Chen, H -w, De pasquale, M, Fruchter, A, Fynbo, J P U, García-benito, R, Gompertz, B, Hartmann, D, Kouveliotou, C, Milvang-jensen, B, Palazzi, E, Perley, D A, Piranomonte, S, Pugliese, G, Savaglio, S, Sbarufatti, B, Schulze, S, Tagliaferri, G, Postigo, A De Ugarte, Watson, D, Wiseman, P, Schady, P, Yates, R M, Christensen, L, De cia, A, Rossi, A, D’elia, V, Heintz, K E, Jakobsson, P, Laskar, T, Levan, A, Salvaterra, R, Starling, R L C, Tanvir, N R, Thöne, C C, Vergani, S, Wiersema, K, Arabsalmani, M, Chen, H -w, De pasquale, M, Fruchter, A, Fynbo, J P U, García-benito, R, Gompertz, B, Hartmann, D, Kouveliotou, C, Milvang-jensen, B, Palazzi, E, Perley, D A, Piranomonte, S, Pugliese, G, Savaglio, S, Sbarufatti, B, Schulze, S, Tagliaferri, G, Postigo, A De Ugarte, Watson, D, and Wiseman, P

Published
2024

20. Multiband analyses of the bright GRB 230812B and the associated SN2023pel

Author

Hussenot-desenonges, T, Wouters, T, Guessoum, N, Abdi, I, Abulwfa, A, Adami, C, Agüí fernández, J F, Ahumada, T, Aivazyan, V, Akl, D, Anand, S, Andrade, C M, Antier, S, Ata, S A, D’avanzo, P, Azzam, Y A, Baransky, A, Basa, S, Blazek, M, Bendjoya, P, Beradze, S, Boumis, P, Bremer, M, Brivio, R, Buat, V, Bulla, M, Burkhonov, O, Burns, E, Cenko, S B, Coughlin, M W, Corradi, W, Daigne, F, Dietrich, T, Dornic, D, Ducoin, J -g, Duverne, P -a, Elhosseiny, E G, Elnagahy, F I, El-sadek, M A, Ferro, M, Le floc’h, E, Freeberg, M, Fynbo, J P U, Götz, D, Gurbanov, E, Hamed, G M, Hasanov, E, Healy, B F, Heintz, K E, Hello, P, Inasaridze, R, Iskandar, A, Ismailov, N, Izzo, L, Jhawar, S, Jegou du laz, T, Kamel, T M, Karpov, S, Klotz, A, Koulouridis, E, Kuin, N P, Kochiashvili, N, Leonini, S, Lu, K -x, Malesani, D B, Mašek, M, Mao, J, Melandri, A, Mihov, B M, Natsvlishvili, R, Navarete, F, Nedora, V, Nicolas, J, Odeh, M, Palmerio, J, Pang, P T H, De pasquale, M, Peng, H W, Pormente, S, Peloton, J, Pradier, T, Pyshna, O, Rajabov, Y, Rakotondrainibe, N A, Rivet, J -p, Rousselot, L, Saccardi, A, Sasaki, N, Schneider, B, Serrau, M, Shokry, A, Slavcheva-mihova, L, Simon, A, Sokoliuk, O, Srinivasaragavan, G, Strausbaugh, R, Takey, A, Tanvir, N R, Thöne, C C, Tillayev, Y, Melo, I Tosta E, Turpin, D, De ugarte postigo, A, Vasylenko, V, Vergani, S D, Vidadi, Z, Xu, D, Wang, L T, Wang, X F, Winters, J M, Zhang, X -l, Zhu, Z, Hussenot-desenonges, T, Wouters, T, Guessoum, N, Abdi, I, Abulwfa, A, Adami, C, Agüí fernández, J F, Ahumada, T, Aivazyan, V, Akl, D, Anand, S, Andrade, C M, Antier, S, Ata, S A, D’avanzo, P, Azzam, Y A, Baransky, A, Basa, S, Blazek, M, Bendjoya, P, Beradze, S, Boumis, P, Bremer, M, Brivio, R, Buat, V, Bulla, M, Burkhonov, O, Burns, E, Cenko, S B, Coughlin, M W, Corradi, W, Daigne, F, Dietrich, T, Dornic, D, Ducoin, J -g, Duverne, P -a, Elhosseiny, E G, Elnagahy, F I, El-sadek, M A, Ferro, M, Le floc’h, E, Freeberg, M, Fynbo, J P U, Götz, D, Gurbanov, E, Hamed, G M, Hasanov, E, Healy, B F, Heintz, K E, Hello, P, Inasaridze, R, Iskandar, A, Ismailov, N, Izzo, L, Jhawar, S, Jegou du laz, T, Kamel, T M, Karpov, S, Klotz, A, Koulouridis, E, Kuin, N P, Kochiashvili, N, Leonini, S, Lu, K -x, Malesani, D B, Mašek, M, Mao, J, Melandri, A, Mihov, B M, Natsvlishvili, R, Navarete, F, Nedora, V, Nicolas, J, Odeh, M, Palmerio, J, Pang, P T H, De pasquale, M, Peng, H W, Pormente, S, Peloton, J, Pradier, T, Pyshna, O, Rajabov, Y, Rakotondrainibe, N A, Rivet, J -p, Rousselot, L, Saccardi, A, Sasaki, N, Schneider, B, Serrau, M, Shokry, A, Slavcheva-mihova, L, Simon, A, Sokoliuk, O, Srinivasaragavan, G, Strausbaugh, R, Takey, A, Tanvir, N R, Thöne, C C, Tillayev, Y, Melo, I Tosta E, Turpin, D, De ugarte postigo, A, Vasylenko, V, Vergani, S D, Vidadi, Z, Xu, D, Wang, L T, Wang, X F, Winters, J M, Zhang, X -l, and Zhu, Z

Published
2024

21. A new population of ultra-long duration gamma-ray bursts

Author

Levan, A. J., Tanvir, N. R., Starling, R. L. C., Wiersema, K., Page, K. L., Perley, D. A., Schulze, S., Wynn, G. A., Chornock, R., Hjorth, J., Cenko, S. B., Fruchter, A. S., O'Brien, P. T., Brown, G. C., Tunnicliffe, R. L., Malesani, D., Jakobsson, P., Watson, D., Berger, E., Bersier, D., Cobb, B. E., Covino, S., Cucchiara, A., Postigo, A. de Ugarte, Fox, D. B., Gal-Yam, A., Goldoni, P., Gorosabel, J., Kaper, L., Kruehler, T., Karjalainen, R., Osborne, J. P., Pian, E., Sanchez-Ramirez, R., Schmidt, B., Skillen, I., Tagliaferri, G., Thone, C., Vaduvescu, O., Wijers, R. A. M. J., and Zauderer, B. A.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present comprehensive multiwavelength observations of three gamma-ray bursts (GRBs) with durations of several thousand seconds. We demonstrate that these events are extragalactic transients; in particular we resolve the long-standing conundrum of the distance of GRB 101225A (the "Christmas-day burst"), finding it to have a redshift z=0.847, and showing that two apparently similar events (GRB 111209A and GRB 121027A) lie at z=0.677 and z=1.773 respectively. The systems show extremely unusual X-ray and optical lightcurves, very different from classical GRBs, with long lasting highly variable X-ray emission and optical light curves that exhibit little correlation with the behaviour seen in the X-ray. Their host galaxies are faint, compact, and highly star forming dwarf galaxies, typical of "blue compact galaxies". We propose that these bursts are the prototypes of a hitherto largely unrecognized population of ultra-long GRBs, that while observationally difficult to detect may be astrophysically relatively common. The long durations may naturally be explained by the engine driven explosions of stars of much larger radii than normally considered for GRB progenitors which are thought to have compact Wolf-Rayet progenitor stars. However, we cannot unambiguously identify supernova signatures within their light curves or spectra. We also consider the alternative possibility that they arise from the tidal disruption of stars by supermassive black holes., Comment: 28 pages, 12 Figures, submitted to ApJ

Published
2013
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22. The Population of Helium-Merger Progenitors: Observational Predictions

Author

Fryer, C. L., Belczynski, K., Berger, E., Thone, C., Ellinger, C., and Bulik, T.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

The helium-merger gamma-ray burst progenitor is produced by the rapid accretion onto a compact remnant (neutron star or black hole) when it undergoes a common envelope inspiral with its companion's helium core. This merger phase produces a very distinct environment around these outbursts and recent observations suggest that, in some cases, we are detecting the signatures of the past merger in the GRB afterglow. These observations allow us, for the first time, to study the specific features of the helium merger progenitor. In this paper, we couple population synthesis calculations to our current understanding of gamma-ray burst engines and common envelope evolution to make observational predictions for the helium-merger gamma-ray burst population. Many mergers do not produce GRB outbursts and we discuss the implications of these mergers with the broader population of astrophysical transients., Comment: 10 pages, submitted to ApJ

Published
2012
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23. Identifying the Location in the Host Galaxy of the Short GRB 111117A with the Chandra Sub-arcsecond Position

Author

Sakamoto, T., Troja, E., Aoki, K., Guiriec, S., Im, M., Leloudas, G., Malesani, D., Melandri, A., Postigo, A. de Ugarte, Urata, Y., Xu, D., D'Avanzo, P., Gorosabel, J., Jeon, Y., Sanchez-Ramirez, R., Andersen, M. I., Bai, J., Barthelmy, S. D., Briggs, M. S., Foley, S., Fruchter, A. S., Fynbo, J. P. U., Gehrels, N., Huang, K., Jang, M., Kawai, N., Korhonen, H., Mao, J., Norris, J. P., Preece, R. D., Racusin, J. L., Thone, C. C., Vida, K., and Zhao, X.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present our successful Chandra program designed to identify, with sub-arcsecond accuracy, the X-ray afterglow of the short GRB 111117A, which was discovered by Swift and Fermi. Thanks to our rapid target of opportunity request, Chandra clearly detected the X-ray afterglow, though no optical afterglow was found in deep optical observations. The host galaxy was clearly detected in the optical and near-infrared band, with the best photometric redshift of z=1.31_{-0.23}^{+0.46} (90% confidence), making it one of the highest known short GRB redshifts. Furthermore, we see an offset of 1.0 +- 0.2 arcseconds, which corresponds to 8.4 +- 1.7 kpc, between the host and the afterglow position. We discuss the importance of using Chandra for obtaining sub-arcsecond X-ray localizations of short GRB afterglows to study GRB environments., Comment: 17 pages, 11 figures, accepted for publication in ApJ

Published
2012
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24. Discovery of the afterglow and host galaxy of the low redshift short GRB 080905A

Author

Rowlinson, A., Wiersema, K., Levan, A. J., Tanvir, N. R., O'Brien, P. T., Rol, E., Hjorth, J., Thone, C. C., Postigo, A. de Ugarte, Fynbo, J. P. U., Jakobsson, P., Pagani, C., and Stamatikos, M.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract

We present the discovery of short GRB 080905A, its optical afterglow and host galaxy. Initially discovered by Swift, our deep optical observations enabled the identification of a faint optical afterglow, and subsequently a face-on spiral host galaxy underlying the GRB position, with a chance alignment probability of <1%. There is no supernova component present in the afterglow to deep limits. Spectroscopy of the galaxy provides a redshift of z=0.1218, the lowest redshift yet observed for a short GRB. The GRB lies offset from the host galaxy centre by ~18.5 kpc, in the northern spiral arm which exhibits an older stellar population than the southern arm. No emission lines are visible directly under the burst position, implying little ongoing star formation at the burst location. These properties would naturally be explained were the progenitor of GRB 080905A a compact binary merger., Comment: Accepted for publication in MNRAS, 10 pages, 5 figures

Published
2010
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25. OGLE 2008--BLG--290: An accurate measurement of the limb darkening of a Galactic Bulge K Giant spatially resolved by microlensing

Author

Fouque, P., Heyrovsky, D., Dong, S., Gould, A., Udalski, A., Albrow, M. D., Batista, V., Beaulieu, J. -P., Bennett, D. P., Bond, I. A., Bramich, D. M., Novati, S. Calchi, Cassan, A., Coutures, C., Dieters, S., Dominik, M., Prester, D. Dominis, Greenhill, J., Horne, K., Jorgensen, U. G., Kozlowski, S., Kubas, D., Lee, C. -H., Marquette, J. -B., Mathiasen, M., Menzies, J., Monard, L. A. G., Nishiyama, S., Papadakis, I., Street, R., Sumi, T., Williams, A., Yee, J. C., Brillant, S., Caldwell, J. A. R., Cole, A., Cook, K. H., Donatowicz, J., Kains, N., Kane, S. R., Martin, R., Pollard, K. R., Sahu, K. C., Tsapras, Y., Wambsganss, J., Zub, M., DePoy, D. L., Gaudi, B. S., Han, C., Lee, C. -U., Park, B. -G., Pogge, R. W., Kubiak, M., Szymanski, M. K., Pietrzynski, G., Soszynski, I., Szewczyk, O., Ulaczyk, K., Wyrzykowski, L., Abe, F., Fukui, A., Furusawa, K., Gilmore, A. C., Hearnshaw, J. B., Itow, Y., Kamiya, K., Kilmartin, P. M., Korpela, A. V., Lin, W., Ling, C. H., Masuda, K., Matsubara, Y., Miyake, N., Muraki, Y., Nagaya, M., Ohnishi, K., Okumura, T., Perrott, Y., Rattenbury, N. J., Saito, To., Sako, T., Sato, S., Skuljan, L., Sullivan, D., Sweatman, W., Tristram, P. J., Yock, P. C. M., Allan, A., Bode, M. F., Burgdorf, M. J., Clay, N., Fraser, S. N., Hawkins, E., Kerins, E., Lister, T. A., Mottram, C. J., Saunders, E. S., Snodgrass, C., Steele, I. A., Wheatley, P. J., Anguita, T., Bozza, V., Harpsoe, K., Hinse, T. C., Hundertmark, M., Kjaergaard, P., Liebig, C., Mancini, L., Masi, G., Rahvar, S., Ricci, D., Scarpetta, G., Southworth, J., Surdej, J., Thone, C. C., Riffeser, A., Seitz, S., and Bender, R.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Gravitational microlensing is not only a successful tool for discovering distant exoplanets, but it also enables characterization of the lens and source stars involved in the lensing event. In high magnification events, the lens caustic may cross over the source disk, which allows a determination of the angular size of the source and additionally a measurement of its limb darkening. When such extended-source effects appear close to maximum magnification, the resulting light curve differs from the characteristic Paczynski point-source curve. The exact shape of the light curve close to the peak depends on the limb darkening of the source. Dense photometric coverage permits measurement of the respective limb-darkening coefficients. In the case of microlensing event OGLE 2008-BLG-290, the K giant source star reached a peak magnification of about 100. Thirteen different telescopes have covered this event in eight different photometric bands. Subsequent light-curve analysis yielded measurements of linear limb-darkening coefficients of the source in six photometric bands. The best-measured coefficients lead to an estimate of the source effective temperature of about 4700 +100-200 K. However, the photometric estimate from colour-magnitude diagrams favours a cooler temperature of 4200 +-100 K. As the limb-darkening measurements, at least in the CTIO/SMARTS2 V and I bands, are among the most accurate obtained, the above disagreement needs to be understood. A solution is proposed, which may apply to previous events where such a discrepancy also appeared., Comment: Astronomy & Astrophysics in press

Published
2010
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26. The X-ray absorbing column densities of Swift Gamma-ray bursts

Author

Campana, S., Thone, C. C., Postigo, A. de Ugarte, Tagliaferri, G., Moretti, A., and Covino, S.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Long gamma-ray bursts (GRBs) are associated with the explosion of massive stars in star forming regions. A large fraction of GRBs show intrinsic absorption as detected in optical spectra but absorption signatures are also detectable in afterglow X-ray spectra. We present here a comprehensive analysis the full sample of 93 GRBs with known redshift promptly observed by Swift XRT up to June 2009. The distribution of X-ray column densities clearly shows that GRBs are heavily absorbed indicating that they indeed occur in dense environments. Furthermore, there is a lack of heavily absorbed GRBs at low redshift (z<1-2) that might therefore be candidates for the missing `dark' GRB population. However, there is no statistically significant correlation between the amount of X-ray absorption and the `darkness' of a GRB. Finally, we compare the hydrogen column densities derived in the optical with those derived from X-ray absorption. The two distributions are different, with the optical column densities being lower than the X-ray ones, which is even more apparent when correcting for metallicity effects. The most likely explanation is photoionization of hydrogen in the circumburst material caused by the radiation field of the burst., Comment: Accepted for publication in MNRAS (7 pages, 4 figures)

Published
2009
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27. High-precision photometry by telescope defocussing. II. The transiting planetary system WASP-4

Author

Southworth, John, Hinse, T. C., Burgdorf, M. J., Dominik, M., Hornstrup, A., Jorgensen, U. G., Liebig, C., Ricci, D., Thone, C. C., Anguita, T., Bozza, V., Novati, S. Calchi, Harpsoe, K., Mancini, L., Masi, G., Mathiasen, M., Rahvar, S., Scarpetta, G., Snodgrass, C., Surdej, J., and Zub, M.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

We present and analyse light curves of four transits of the Southern hemisphere extrasolar planetary system WASP-4, obtained with a telescope defocussed so the radius of each point spread function was 17 arcsec (44 pixels). This approach minimises both random and systematic errors, allowing us to achieve scatters of between 0.60 and 0.88 mmag per observation over complete transit events. The light curves are augmented by published observations and analysed using the JKTEBOP code. The results of this process are combined with theoretical stellar model predictions to derive the physical properties of the WASP-4 system. We find that the mass and radius of the planet are M_b = 1.289 {+0.090 -0.090} {+0.039 -0.000} MJup and R_b = 1.371 {+0.032 -0.035} {+0.021 -0.000} RJup, respectively (statistical and systematic uncertainties). These quantities give a surface gravity and density of g_b = 17.03 +0.97 -0.54 m/s2 and rho_b = 0.500 {+0.032 -0.021} {+0.000 -0.008} rhoJup, and fit the trends for short-period extrasolar planets to have relatively high masses and surface gravities. WASP-4 is now one of the best-quantified transiting extrasolar planetary systems, and significant further progress requires improvements to our understanding of the physical properties of low-mass stars., Comment: Accepted for publication in MNRAS. 8 pages plus appendix, 4 figures, 8 tables

Published
2009
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28. High-precision photometry by telescope defocussing. I. The transiting planetary system WASP-5

Author

Southworth, John, Hinse, T. C., Joergensen, U. G., Dominik, M., Ricci, D., Burgdorf, M. J., Hornstrup, A., Wheatley, P. J., Anguita, T., Bozza, V., Novati, S. Calchi, Harpsoe, K., Kjaergaard, P., Liebig, C., Mancini, L., Masi, G., Mathiasen, M., Rahvar, S., Scarpetta, G., Snodgrass, C., Surdej, J., Thone, C. C., and Zub, M.

Subjects
Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract

We present high-precision photometry of two transit events of the extrasolar planetary system WASP-5, obtained with the Danish 1.54m telescope at ESO La Silla. In order to minimise both random and flat-fielding errors, we defocussed the telescope so its point spread function approximated an annulus of diameter 40 pixels (16 arcsec). Data reduction was undertaken using standard aperture photometry plus an algorithm for optimally combining the ensemble of comparison stars. The resulting light curves have point-to-point scatters of 0.50 mmag for the first transit and 0.59 mmag for the second. We construct detailed signal to noise calculations for defocussed photometry, and apply them to our observations. We model the light curves with the JKTEBOP code and combine the results with tabulated predictions from theoretical stellar evolutionary models to derive the physical properties of the WASP-5 system. We find that the planet has a mass of M_b = 1.637 +/- 0.075 +/- 0.033 Mjup, a radius of R_b = 1.171 +/- 0.056 +/- 0.012 Rjup, a large surface gravity of g_b = 29.6 +/- 2.8 m/s2 and a density of rho_b = 1.02 +/- 0.14 +/- 0.01 rhojup (statistical and systematic uncertainties). The planet's high equilibrium temperature of T_eq = 1732 +/- 80 K makes it a good candidate for detecting secondary eclipses., Comment: Accepted for publication in MNRAS. 9 pages, 4 figures, quite a few tables

Published
2009
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29. The Peculiar Type Ia Supernova 2005hk

Author

Stanishev, V., Taubenberger, S., Blanc, G., Anupama, G. C., Benetti, S., Cappellaro, E., Elias-Rosa, N., Feron, C., Goobar, A., Krisciunas, K., Pastorello, A., Sahu, D. K., Salvo, M. E., Schmidt, B. P., Sollerman, J., Thone, C. C., Turatto, M., and Hillebrandt, W.

Subjects
Astrophysics
Abstract

We present a preliminary analysis of an extensive set of optical observations of the Type Ia SN 2005hk. We show that the evolution of SN 2005hk closely follows that of the peculiar SN 2002cx. SN 2005hk is more luminous than SN 2002cx, while still under-luminous compared to normal Type Ia supernovae. The spectrum at 9 days before maximum is dominated by conspicuous Fe III and Ni III lines, and the Si II 6355 line is also clearly visible. All these features have low velocity (~6000 km/s). The near maximum spectra show lines of Si II, S II, Fe II, Fe III, as well as other intermediate mass and iron group elements. Analysis with the code for synthetic spectra SYNOW indicates that all these spectral lines have similar velocities., Comment: 6 pages, 3 figures, submitted to the proceedings of the conference``The Multicoloured Landscape of Compact Objects and their Explosive Origins'', 2006 June 11--24, Cefalu, Sicily, to be published by AIP

Published
2006
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30. The cosmic buildup of dust and metals

Author

Heintz, K. E., primary, De Cia, A., additional, Thöne, C. C., additional, Krogager, J.-K., additional, Yates, R. M., additional, Vejlgaard, S., additional, Konstantopoulou, C., additional, Fynbo, J. P. U., additional, Watson, D., additional, Narayanan, D., additional, Wilson, S. N., additional, Arabsalmani, M., additional, Campana, S., additional, D’Elia, V., additional, De Pasquale, M., additional, Hartmann, D. H., additional, Izzo, L., additional, Jakobsson, P., additional, Kouveliotou, C., additional, Levan, A., additional, Li, Q., additional, Malesani, D. B., additional, Melandri, A., additional, Milvang-Jensen, B., additional, Møller, P., additional, Palazzi, E., additional, Palmerio, J., additional, Petitjean, P., additional, Pugliese, G., additional, Rossi, A., additional, Saccardi, A., additional, Salvaterra, R., additional, Savaglio, S., additional, Schady, P., additional, Stratta, G., additional, Tanvir, N. R., additional, de Ugarte Postigo, A., additional, Vergani, S. D., additional, Wiersema, K., additional, Wijers, R. A. M. J., additional, and Zafar, T., additional

Published
2023
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31. Signatures of a jet cocoon in early spectra of a supernova associated with a γ-ray burst

Author

Izzo, L., de Ugarte Postigo, A., Maeda, K., Thöne, C. C., Kann, D. A., Della Valle, M., Sagues Carracedo, A., Michałowski, M. J., Schady, P., Schmidl, S., Selsing, J., Starling, R. L. C., Suzuki, A., Bensch, K., Bolmer, J., Campana, S., Cano, Z., Covino, S., Fynbo, J. P. U., Hartmann, D. H., Heintz, K. E., Hjorth, J., Japelj, J., Kamiński, K., Kaper, L., Kouveliotou, C., Krużyński, M., Kwiatkowski, T., Leloudas, G., Levan, A. J., Malesani, D. B., Michałowski, T., Piranomonte, S., Pugliese, G., Rossi, A., Sánchez-Ramírez, R., Schulze, S., Steeghs, D., Tanvir, N. R., Ulaczyk, K., Vergani, S. D., and Wiersema, K.

Published
2019
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32. The optical afterglow of the short gamma-ray burst associated with GW170817

Author

Lyman, J. D., Lamb, G. P., Levan, A. J., Mandel, I., Tanvir, N. R., Kobayashi, S., Gompertz, B., Hjorth, J., Fruchter, A. S., Kangas, T., Steeghs, D., Steele, I. A., Cano, Z., Copperwheat, C., Evans, P. A., Fynbo, J. P. U., Gall, C., Im, M., Izzo, L., Jakobsson, P., Milvang-Jensen, B., O’Brien, P., Osborne, J. P., Palazzi, E., Perley, D. A., Pian, E., Rosswog, S., Rowlinson, A., Schulze, S., Stanway, E. R., Sutton, P., Thöne, C. C., de Ugarte Postigo, A., Watson, D. J., Wiersema, K., and Wijers, R. A. M. J.

Published
2018
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33. Science with a small two-band UV-photometry mission I: Mission description and follow-up observations of stellar transients

Author

Werner, N., Řípa, J., Thöne, C., Münz, F., Kurfürst, P., Jelínek, M., Hroch, F., Benáček, J., Topinka, M., Lukes-Gerakopoulos, G., Zajaček, M., Labaj, M., Prišegen, M., Krtička, J., Merc, J., Pál, A., Pejcha, O., Dániel, V., Jon, J., Šošovička, R., Gromeš, J., Václavík, J., Steiger, L., Segiňák, J., Behar, E., Tarem, S., Salh, J., Reich, O., Ben-Ami, S., Barschke, M. F., Berge, D., Tohuvavohu, A., Sivanandam, S., Bulla, M., Popov, S., and Chang, Hsiang-Kuang

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics - Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

This is the first in a collection of three papers introducing the science with an ultra-violet (UV) space telescope on an approximately 100 kg small satellite with a moderately fast re-pointing capability and a real-time alert communication system that is being studied for a Czech national space mission. The mission, called Quick Ultra-Violet Kilonova surveyor - QUVIK, will provide key follow-up capabilities to increase the discovery potential of gravitational wave observatories and future wide-field multi-wavelength surveys. The primary objective of the mission is the measurement of the UV brightness evolution of kilonovae, resulting from mergers of neutron stars, to distinguish between different explosion scenarios. The mission, which is designed to be complementary to the Ultraviolet Transient Astronomy Satellite - ULTRASAT, will also provide unique follow-up capabilities for other transients both in the near- and far-UV bands. Between the observations of transients, the satellite will target other objects described in this collection of papers, which demonstrates that a small and relatively affordable dedicated UV-space telescope can be transformative for many fields of astrophysics., Submitted to Space Science Reviews

Published
2023

34. Dissecting the interstellar medium of a z = 6.3 galaxy:X-shooter spectroscopy and HST imaging of the afterglow and environment of the Swift GRB 210905A

Author

Saccardi, A., Vergani, S. D., De Cia, A., D’elia, V., Heintz, K. E., Izzo, L., Palmerio, J. T., Petitjean, P., Rossi, A., De Ugarte Postigo, A., Konstantopoulou, C., Christensen, Lise Bech, Levan, A. J., Malesani, D. B., Møller, P., Ramburuth-hurt, T., Salvaterra, R., Tanvir, N. R., Thöne, C. C., Nielsen, Simone Vejlgaard, Fynbo, J. P. U., Kann, D. A., Schady, P., Watson, D. J., Wiersema, K., Campana, S., Covino, S., De Pasquale, M., Fausey, H., Hartmann, D. H., Van Der Horst, A. J., Jakobsson, P., Palazzi, E., Pugliese, G., Savaglio, S., Starling, R. L. C., Stratta, G., Zafar, T., Saccardi, A., Vergani, S. D., De Cia, A., D’elia, V., Heintz, K. E., Izzo, L., Palmerio, J. T., Petitjean, P., Rossi, A., De Ugarte Postigo, A., Konstantopoulou, C., Christensen, Lise Bech, Levan, A. J., Malesani, D. B., Møller, P., Ramburuth-hurt, T., Salvaterra, R., Tanvir, N. R., Thöne, C. C., Nielsen, Simone Vejlgaard, Fynbo, J. P. U., Kann, D. A., Schady, P., Watson, D. J., Wiersema, K., Campana, S., Covino, S., De Pasquale, M., Fausey, H., Hartmann, D. H., Van Der Horst, A. J., Jakobsson, P., Palazzi, E., Pugliese, G., Savaglio, S., Starling, R. L. C., Stratta, G., and Zafar, T.

Published
2023

35. The cosmic build-up of dust and metals. Accurate abundances from GRB-selected star-forming galaxies at $1.7 < z < 6.3$

Author

Heintz, K. E., De Cia, A., Thöne, C. C., Krogager, J. -K., Yates, R. M., Vejlgaard, S., Konstantopoulou, C., Fynbo, J. P. U., Watson, D., Narayanan, D., Wilson, S. N., Arabsalmani, M., Campana, S., D'Elia, V., De Pasquale, M., Hartmann, D. H., Izzo, L., Jakobsson, P., Kouveliotou, C., Levan, A., Li, Q., Malesani, D. B., Melandri, A., Milvang-Jensen, B., Møller, P., Palazzi, E., Palmerio, J., Petitjean, P., Pugliese, G., Rossi, A., Saccardi, A., Salvaterra, R., Savaglio, S., Schady, P., Stratta, G., Tanvir, N. R., Postigo, A. de Ugarte, Vergani, S. D., Wiersema, K., Wijers, R. A. M. J., Zafar, T., Heintz, K. E., De Cia, A., Thöne, C. C., Krogager, J. -K., Yates, R. M., Vejlgaard, S., Konstantopoulou, C., Fynbo, J. P. U., Watson, D., Narayanan, D., Wilson, S. N., Arabsalmani, M., Campana, S., D'Elia, V., De Pasquale, M., Hartmann, D. H., Izzo, L., Jakobsson, P., Kouveliotou, C., Levan, A., Li, Q., Malesani, D. B., Melandri, A., Milvang-Jensen, B., Møller, P., Palazzi, E., Palmerio, J., Petitjean, P., Pugliese, G., Rossi, A., Saccardi, A., Salvaterra, R., Savaglio, S., Schady, P., Stratta, G., Tanvir, N. R., Postigo, A. de Ugarte, Vergani, S. D., Wiersema, K., Wijers, R. A. M. J., and Zafar, T.

Abstract

The chemical enrichment of dust and metals in the interstellar medium (ISM) of galaxies throughout cosmic time is one of the key driving processes of galaxy evolution. Here we study the evolution of the gas-phase metallicities, dust-to-gas (DTG), and dust-to-metal (DTM) ratios of 36 star-forming galaxies at $1.7 < z < 6.3$ probed by gamma-ray bursts (GRBs). We compile all GRB-selected galaxies with intermediate (R=7000) to high (R>40,000) resolution spectroscopic data for which at least one refractory (e.g. Fe) and one volatile (e.g. S or Zn) element have been detected at S/N>3. This is to ensure that accurate abundances and dust depletion patterns can be obtained. We first derive the redshift evolution of the dust-corrected, absorption-line based gas-phase metallicity [M/H]$_{\rm tot}$ in these galaxies, for which we determine a linear relation with redshift ${\rm [M/H]_{tot}}(z) = (-0.21\pm 0.04)z -(0.47\pm 0.14)$. We then examine the DTG and DTM ratios as a function of redshift and through three orders of magnitude in metallicity, quantifying the relative dust abundance both through the direct line-of-sight visual extinction $A_V$ and the derived depletion level. We use a novel method to derive the DTG and DTM mass ratios for each GRB sightline, summing up the mass of all the depleted elements in the dust-phase. We find that the DTG and DTM mass ratios are both strongly correlated with the gas-phase metallicity and show a mild evolution with redshift as well. While these results are subject to a variety of caveats related to the physical environments and the narrow pencil-beam sightlines through the ISM probed by the GRBs, they provide strong implications for studies of dust masses to infer the gas and metal content of high-redshift galaxies, and particularly demonstrate the large offset from the average Galactic value in the low-metallicity, high-redshift regime., Comment: Accepted in A&A

Published
2023
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36. JWST detection of heavy neutron capture elements in a compact object merger

Author

Levan, A., Gompertz, B. P., Salafia, O. S., Bulla, M., Burns, E., Hotokezaka, K., Izzo, L., Lamb, G. P., Malesani, D. B., Oates, S. R., Ravasio, M. E., Escorial, A. Rouco, Schneider, B., Sarin, N., Schulze, S., Tanvir, N. R., Ackley, K., Anderson, G., Brammer, G. B., Christensen, L., Dhillon, V. S., Evans, P. A., Fausnaugh, M., Fong, W. -F., Fruchter, A. S., Fryer, C., Fynbo, J. P. U., Gaspari, N., Heintz, K. E., Hjorth, J., Kennea, J. A., Kennedy, M. R., Laskar, T., Leloudas, G., Mandel, I., Martin-Carrillo, A., Metzger, B. D., Nicholl, M., Nugent, A., Palmerio, J. T., Pugliese, G., Rastinejad, J., Rhodes, L., Rossi, A., Smartt, S. J., Stevance, H. F., Tohuvavohu, A., van der Horst, A., Vergani, S. D., Watson, D., Barclay, T., Bhirombhakdi, K., Breedt, E., Breeveld, A. A., Brown, A. J., Campana, S., Chrimes, A. A., D'Avanzo, P., D'Elia, V., De Pasquale, M., Dyer, M. J., Galloway, D. K., Garbutt, J. A., Green, M. J., Hartmann, D. H., Jakobsson, P., Kerry, P., Langeroodi, D., Leung, J. K., Littlefair, S. P., Munday, J., O'Brien, P., Parsons, S. G., Pelisoli, I., Saccardi, A., Sahman, D. I., Salvaterra, R., Sbarufatti, B., Steeghs, D., Tagliaferri, G., Thöne, C. C., Postigo, A. de Ugarte, Kann, D. A., Levan, A., Gompertz, B. P., Salafia, O. S., Bulla, M., Burns, E., Hotokezaka, K., Izzo, L., Lamb, G. P., Malesani, D. B., Oates, S. R., Ravasio, M. E., Escorial, A. Rouco, Schneider, B., Sarin, N., Schulze, S., Tanvir, N. R., Ackley, K., Anderson, G., Brammer, G. B., Christensen, L., Dhillon, V. S., Evans, P. A., Fausnaugh, M., Fong, W. -F., Fruchter, A. S., Fryer, C., Fynbo, J. P. U., Gaspari, N., Heintz, K. E., Hjorth, J., Kennea, J. A., Kennedy, M. R., Laskar, T., Leloudas, G., Mandel, I., Martin-Carrillo, A., Metzger, B. D., Nicholl, M., Nugent, A., Palmerio, J. T., Pugliese, G., Rastinejad, J., Rhodes, L., Rossi, A., Smartt, S. J., Stevance, H. F., Tohuvavohu, A., van der Horst, A., Vergani, S. D., Watson, D., Barclay, T., Bhirombhakdi, K., Breedt, E., Breeveld, A. A., Brown, A. J., Campana, S., Chrimes, A. A., D'Avanzo, P., D'Elia, V., De Pasquale, M., Dyer, M. J., Galloway, D. K., Garbutt, J. A., Green, M. J., Hartmann, D. H., Jakobsson, P., Kerry, P., Langeroodi, D., Leung, J. K., Littlefair, S. P., Munday, J., O'Brien, P., Parsons, S. G., Pelisoli, I., Saccardi, A., Sahman, D. I., Salvaterra, R., Sbarufatti, B., Steeghs, D., Tagliaferri, G., Thöne, C. C., Postigo, A. de Ugarte, and Kann, D. A.

Abstract

The mergers of binary compact objects such as neutron stars and black holes are of central interest to several areas of astrophysics, including as the progenitors of gamma-ray bursts (GRBs), sources of high-frequency gravitational waves and likely production sites for heavy element nucleosynthesis via rapid neutron capture (the r-process). These heavy elements include some of great geophysical, biological and cultural importance, such as thorium, iodine and gold. Here we present observations of the exceptionally bright gamma-ray burst GRB 230307A. We show that GRB 230307A belongs to the class of long-duration gamma-ray bursts associated with compact object mergers, and contains a kilonova similar to AT2017gfo, associated with the gravitational-wave merger GW170817. We obtained James Webb Space Telescope mid-infrared (mid-IR) imaging and spectroscopy 29 and 61 days after the burst. The spectroscopy shows an emission line at 2.15 microns which we interpret as tellurium (atomic mass A=130), and a very red source, emitting most of its light in the mid-IR due to the production of lanthanides. These observations demonstrate that nucleosynthesis in GRBs can create r-process elements across a broad atomic mass range and play a central role in heavy element nucleosynthesis across the Universe., Comment: Submitted. Comments welcome! Nature (2023)

Published
2023
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37. The first JWST spectrum of a GRB afterglow: No bright supernova in observations of the brightest GRB of all time, GRB 221009A

Author

Levan, A. J., Lamb, G. P., Schneider, B., Hjorth, J., Zafar, T., Postigo, A. de Ugarte, Sargent, B., Mullally, S. E., Izzo, L., D'Avanzo, P., Burns, E., Fernández, J. F. Agüí, Barclay, T., Bernardini, M. G., Bhirombhakdi, K., Bremer, M., Brivio, R., Campana, S., Chrimes, A. A., D'Elia, V., Della Valle, M., De Pasquale, M., Ferro, M., Fong, W., Fruchter, A. S., Fynbo, J. P. U., Gaspari, N., Gompertz, B. P., Hartmann, D. H., Hedges, C. L., Heintz, K. E., Hotokezaka, K., Jakobsson, P., Kann, D. A., Kennea, J. A., Laskar, T., Floc'h, E. Le, Malesani, D. B., Melandri, A., Metzger, B. D., Oates, S. R., Pian, E., Piranomonte, S., Pugliese, G., Racusin, J. L., Rastinejad, J. C., Ravasio, M. E., Rossi, A., Saccardi, A., Salvaterra, R., Sbarufatti, B., Starling, R. L. C., Tanvir, N. R., Thöne, C. C., van der Horst, A. J., Vergani, S. D., Watson, D., Wiersema, K., Wijers, R. A. M. J., Xu, D., Levan, A. J., Lamb, G. P., Schneider, B., Hjorth, J., Zafar, T., Postigo, A. de Ugarte, Sargent, B., Mullally, S. E., Izzo, L., D'Avanzo, P., Burns, E., Fernández, J. F. Agüí, Barclay, T., Bernardini, M. G., Bhirombhakdi, K., Bremer, M., Brivio, R., Campana, S., Chrimes, A. A., D'Elia, V., Della Valle, M., De Pasquale, M., Ferro, M., Fong, W., Fruchter, A. S., Fynbo, J. P. U., Gaspari, N., Gompertz, B. P., Hartmann, D. H., Hedges, C. L., Heintz, K. E., Hotokezaka, K., Jakobsson, P., Kann, D. A., Kennea, J. A., Laskar, T., Floc'h, E. Le, Malesani, D. B., Melandri, A., Metzger, B. D., Oates, S. R., Pian, E., Piranomonte, S., Pugliese, G., Racusin, J. L., Rastinejad, J. C., Ravasio, M. E., Rossi, A., Saccardi, A., Salvaterra, R., Sbarufatti, B., Starling, R. L. C., Tanvir, N. R., Thöne, C. C., van der Horst, A. J., Vergani, S. D., Watson, D., Wiersema, K., Wijers, R. A. M. J., and Xu, D.

Abstract

We present JWST and Hubble Space Telescope (HST) observations of the afterglow of GRB 221009A, the brightest gamma-ray burst (GRB) ever observed. This includes the first mid-IR spectra of any GRB, obtained with JWST/NIRSPEC (0.6-5.5 micron) and MIRI (5-12 micron), 12 days after the burst. Assuming that the intrinsic spectral slope is a single power-law, with $F_{\nu} \propto \nu^{-\beta}$, we obtain $\beta \approx 0.35$, modified by substantial dust extinction with $A_V = 4.9$. This suggests extinction above the notional Galactic value, possibly due to patchy extinction within the Milky Way or dust in the GRB host galaxy. It further implies that the X-ray and optical/IR regimes are not on the same segment of the synchrotron spectrum of the afterglow. If the cooling break lies between the X-ray and optical/IR, then the temporal decay rates would only match a post jet-break model, with electron index $p<2$, and with the jet expanding into a uniform ISM medium. The shape of the JWST spectrum is near-identical in the optical/nIR to X-shooter spectroscopy obtained at 0.5 days and to later time observations with HST. The lack of spectral evolution suggests that any accompanying supernova (SN) is either substantially fainter or bluer than SN 1998bw, the proto-type GRB-SN. Our HST observations also reveal a disc-like host galaxy, viewed close to edge-on, that further complicates the isolation of any supernova component. The host galaxy appears rather typical amongst long-GRB hosts and suggests that the extreme properties of GRB 221009A are not directly tied to its galaxy-scale environment., Comment: Accepted for publication to the Astrophysical Journal Letters for the GRB 221009A Special Issue. The results of this paper are under press embargo until March 28, 18 UT. 19 pages, 8 figures, 2 tables

Published
2023
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38. The brightest GRB ever detected: GRB 221009A as a highly luminous event at z = 0.151

Author

Malesani, D. B., Levan, A. J., Izzo, L., Postigo, A. de Ugarte, Ghirlanda, G., Heintz, K. E., Kann, D. A., Lamb, G. P., Palmerio, J., Salafia, O. S., Salvaterra, R., Tanvir, N. R., Fernández, J. F. Agüí, Campana, S., Chrimes, A. A., D'Avanzo, P., D'Elia, V., Della Valle, M., De Pasquale, M., Fynbo, J. P. U., Gaspari, N., Gompertz, B. P., Hartmann, D. H., Hjorth, J., Jakobsson, P., Palazzi, E., Pian, E., Pugliese, G., Ravasio, M. E., Rossi, A., Saccardi, A., Schady, P., Schneider, B., Sollerman, J., Starling, R. L. C., Thöne, C. C., van der Horst, A. J., Vergani, S. D., Watson, D., Wiersema, K., Xu, D., Zafar, T., Malesani, D. B., Levan, A. J., Izzo, L., Postigo, A. de Ugarte, Ghirlanda, G., Heintz, K. E., Kann, D. A., Lamb, G. P., Palmerio, J., Salafia, O. S., Salvaterra, R., Tanvir, N. R., Fernández, J. F. Agüí, Campana, S., Chrimes, A. A., D'Avanzo, P., D'Elia, V., Della Valle, M., De Pasquale, M., Fynbo, J. P. U., Gaspari, N., Gompertz, B. P., Hartmann, D. H., Hjorth, J., Jakobsson, P., Palazzi, E., Pian, E., Pugliese, G., Ravasio, M. E., Rossi, A., Saccardi, A., Schady, P., Schneider, B., Sollerman, J., Starling, R. L. C., Thöne, C. C., van der Horst, A. J., Vergani, S. D., Watson, D., Wiersema, K., Xu, D., and Zafar, T.

Abstract

Context: The extreme luminosity of gamma-ray bursts (GRBs) makes them powerful beacons for studies of the distant Universe. The most luminous bursts are typically detected at moderate/high redshift, where the volume for seeing such rare events is maximized and the star-formation activity is greater than at z = 0. For distant events, not all observations are feasible, such as at TeV energies. Aims: Here we present a spectroscopic redshift measurement for the exceptional GRB 221009A, the brightest GRB observed to date with emission extending well into the TeV regime. Methods: We used the X-shooter spectrograph at the ESO Very Large Telescope (VLT) to obtain simultaneous optical to near-IR spectroscopy of the burst afterglow 0.5 days after the explosion. Results: The spectra exhibit both absorption and emission lines from material in a host galaxy at z = 0.151. Thus GRB 221009A was a relatively nearby burst with a luminosity distance of 745 Mpc. Its host galaxy properties (star-formation rate and metallicity) are consistent with those of LGRB hosts at low redshift. This redshift measurement yields information on the energy of the burst. The inferred isotropic energy release, $E_{\rm iso} > 5 \times 10^{54}$ erg, lies at the high end of the distribution, making GRB 221009A one of the nearest and also most energetic GRBs observed to date. We estimate that such a combination (nearby as well as intrinsically bright) occurs between once every few decades to once per millennium., Comment: 9 pages, 4 figures, submitted to Astronomy & Astrophysics

Published
2023

39. The physical properties of T Pyx as measured by MUSE I. The geometrical distribution of the ejecta and the distance to the remnant

Author

Izzo, L., Pasquini, L., Aydi, E., Della Valle, M., Gilmozzi, R., Harvey, E. A., Molaro, P., Otulakowska-Hypka, M., Selvelli, P., Thöne, C. C., Williams, R., Izzo, L., Pasquini, L., Aydi, E., Della Valle, M., Gilmozzi, R., Harvey, E. A., Molaro, P., Otulakowska-Hypka, M., Selvelli, P., Thöne, C. C., and Williams, R.

Abstract

T Pyx is one of the most enigmatic recurrent novae, and it has been proposed as a potential Galactic type-Ia supernova progenitor. Using spatially-resolved data obtained with MUSE, we characterized the geometrical distribution of the material expelled in previous outbursts surrounding the white dwarf progenitor. We used a 3D model for the ejecta to determine the geometric distribution of the extended remnant. We have also calculated the nebular parallax distance ($d = 3.55 \pm 0.77$ kpc) based on the measured velocity and spatial shift of the 2011 bipolar ejecta. These findings confirm previous results, including data from the GAIA mission. The remnant of T Pyx can be described by a two-component model, consisting of a tilted ring at $i = 63.7$ deg, relative to its normal vector and by fast bipolar ejecta perpendicular to the plane of the equatorial ring. We find an upper limit for the bipolar outflow ejected mass in 2011 of the bipolar outflow of $M_{ej,b} < (3.0 \pm 1.0) \times 10^{-6}$ M$_{\odot}$, which is lower than previous estimates given in the literature. However, only a detailed physical study of the equatorial component could provide an accurate estimate of the total ejecta of the last outburst, a fundamental step to understand if T Pyx will end its life as a type-Ia supernova., Comment: 9 pages, 8 figures

Published
2023

40. Multi-band analyses of the bright GRB 230812B and the associated SN2023pel

Author

Hussenot-Desenonges, T., Wouters, T., Guessoum, N., Abdi, I., Abulwfa, A., Adami, C., Fernández, J. F. Agüí, Ahumada, T., Aivazyan, V., Akl, D., Anand, S., Andrade, C. M., Antier, S., Ata, S. A., D'Avanzo, P., Azzam, Y. A., Baransky, A., Basa, S., Blazek, M., Bendjoya, P., Beradze, S., Boumis, P., Bremer, M., Brivio, R., Buat, V., Bulla, M., Burkhonov, O., Burns, E., Cenko, S. B., Corradi, W., Coughlin, M. W., Daigne, F., Dietrich, T., Dornic, D., Ducoin, J. -G., Duverne, P. -A., Elhosseiny, E. G., Elnagahy, F. I., El-Sadek, M. A., Ferro, M., Floc'h, E. Le, Freeberg, M., Fynbo, J. P. U., Götz, D., Gurbanov, E., Hamed, G. M., Hasanov, E., Healy, B. F., Heintz, K. E., Hello, P., Inasaridze, R., Iskandar, A., Ismailov, N., Izzo, L., Jhawar, S., Laz, T. Jegou du, Kamel, T. M., Karpov, S., Klotz, A., Koulouridis, E., Kuin, N. P., Kochiashvili, N., Leonini, S., Lu, K. -X., Malesani, D. B., Masek, M., Mao, J., Melandri, A., Mihov, B. M., Natsvlishvili, R., Navarete, F., Nedora, V., Nicolas, J., Odeh, M., Palmerio, J., Pang, P. T. H., De Pasquale, M., Peng, H. W., Pormente, S., Peloton, J., Pradier, T., Pyshna, O., Rajabov, Y., Rakotondrainibe, N. A., Rivet, J. -P., Rousselot, L., Saccardi, A., Sasaki, N., Schneider, B., Serrau, M., Shokry, A., Slavcheva-Mihova, L., Simon, A., Sokoliuk, O., Srinivasaragavan, G., Strausbaugh, R., Tanvir, N. R., Takey, A., Thöne, C. C., Tillayev, Y., Melo, I. Tosta e, Turpin, D., Postigo, A. de Ugarte, Vasylenko, V., Vergani, S. D., Vidadi, Z., Xu, D., Wang, L. T., Wang, X. F., Winters, J. M., Zhang, X -L., Zhu, Z., Hussenot-Desenonges, T., Wouters, T., Guessoum, N., Abdi, I., Abulwfa, A., Adami, C., Fernández, J. F. Agüí, Ahumada, T., Aivazyan, V., Akl, D., Anand, S., Andrade, C. M., Antier, S., Ata, S. A., D'Avanzo, P., Azzam, Y. A., Baransky, A., Basa, S., Blazek, M., Bendjoya, P., Beradze, S., Boumis, P., Bremer, M., Brivio, R., Buat, V., Bulla, M., Burkhonov, O., Burns, E., Cenko, S. B., Corradi, W., Coughlin, M. W., Daigne, F., Dietrich, T., Dornic, D., Ducoin, J. -G., Duverne, P. -A., Elhosseiny, E. G., Elnagahy, F. I., El-Sadek, M. A., Ferro, M., Floc'h, E. Le, Freeberg, M., Fynbo, J. P. U., Götz, D., Gurbanov, E., Hamed, G. M., Hasanov, E., Healy, B. F., Heintz, K. E., Hello, P., Inasaridze, R., Iskandar, A., Ismailov, N., Izzo, L., Jhawar, S., Laz, T. Jegou du, Kamel, T. M., Karpov, S., Klotz, A., Koulouridis, E., Kuin, N. P., Kochiashvili, N., Leonini, S., Lu, K. -X., Malesani, D. B., Masek, M., Mao, J., Melandri, A., Mihov, B. M., Natsvlishvili, R., Navarete, F., Nedora, V., Nicolas, J., Odeh, M., Palmerio, J., Pang, P. T. H., De Pasquale, M., Peng, H. W., Pormente, S., Peloton, J., Pradier, T., Pyshna, O., Rajabov, Y., Rakotondrainibe, N. A., Rivet, J. -P., Rousselot, L., Saccardi, A., Sasaki, N., Schneider, B., Serrau, M., Shokry, A., Slavcheva-Mihova, L., Simon, A., Sokoliuk, O., Srinivasaragavan, G., Strausbaugh, R., Tanvir, N. R., Takey, A., Thöne, C. C., Tillayev, Y., Melo, I. Tosta e, Turpin, D., Postigo, A. de Ugarte, Vasylenko, V., Vergani, S. D., Vidadi, Z., Xu, D., Wang, L. T., Wang, X. F., Winters, J. M., Zhang, X -L., and Zhu, Z.

Abstract

GRB~230812B is a bright and relatively nearby ($z =0.36$) long gamma-ray burst (GRB) that has generated significant interest in the community and has thus been observed over the entire electromagnetic spectrum. We report over 80 observations in X-ray, ultraviolet, optical, infrared, and sub-millimeter bands from the GRANDMA (Global Rapid Advanced Network for Multi-messenger Addicts) network of observatories and from observational partners. Adding complementary data from the literature, we then derive essential physical parameters associated with the ejecta and external properties (i.e. the geometry and environment) of the GRB and compare with other analyses of this event. We spectroscopically confirm the presence of an associated supernova, SN2023pel, and we derive a photospheric expansion velocity of v $\sim$ 17$\times10^3$ km s$^{-1}$. We analyze the photometric data first using empirical fits of the flux and then with full Bayesian Inference. We again strongly establish the presence of a supernova in the data, with a maximum (pseudo-)bolometric luminosity of $5.75 \times 10^{42}$ erg/s, at $15.76^{+0.81}_{-1.21}$ days (in the observer frame) after the trigger, with a half-max time width of 22.0 days. We compare these values with those of SN1998bw, SN2006aj, and SN2013dx. Our best-fit model favours a very low density environment ($\log_{10}({n_{\rm ISM}/{\rm cm}^{-3}}) = -2.38^{+1.45}_{-1.60}$) and small values for the jet's core angle $\theta_{\rm core} = 1.54^{+1.02}_{-0.81} \ \rm{deg}$ and viewing angle $\theta_{\rm obs} = 0.76^{+1.29}_{-0.76} \ \rm{deg}$. GRB 230812B is thus one of the best observed afterglows with a distinctive supernova bump.

Published
2023

41. Comparing emission- and absorption-based gas-phase metallicities in GRB host galaxies at $z=2-4$ using JWST

Author

Schady, P., Yates, R. M., Christensen, L., De Cia, A., Rossi, A., D'Elia, V., Heintz, K. E., Jakobsson, P., Laskar, T., Levan, A., Salvaterra, R., Starling, R. L. C., Tanvir, N. R, Thöne, C. C., Vergani, S., Wiersema, K., Arabsalmani, M ., Chen, H. -W., De Pasquale, M., Fruchter, A., Fynbo, J. P. U., García-Benito, R., Gompertz, B., Hartmann, D., Kouveliotou, C., Milvang-Jensen, B., Palazzi, E., Perley, D., Piranomonte, S., Pugliese, G., Savaglio, S., Sbarufatti, B., Schulze, S., Tagliaferri, G., Postigo, A. de Ugarte, Watson, D., Wiseman, P., Schady, P., Yates, R. M., Christensen, L., De Cia, A., Rossi, A., D'Elia, V., Heintz, K. E., Jakobsson, P., Laskar, T., Levan, A., Salvaterra, R., Starling, R. L. C., Tanvir, N. R, Thöne, C. C., Vergani, S., Wiersema, K., Arabsalmani, M ., Chen, H. -W., De Pasquale, M., Fruchter, A., Fynbo, J. P. U., García-Benito, R., Gompertz, B., Hartmann, D., Kouveliotou, C., Milvang-Jensen, B., Palazzi, E., Perley, D., Piranomonte, S., Pugliese, G., Savaglio, S., Sbarufatti, B., Schulze, S., Tagliaferri, G., Postigo, A. de Ugarte, Watson, D., and Wiseman, P.

Abstract

Much of what is known of the chemical composition of the universe is based on emission line spectra from star forming galaxies. Emission-based inferences are, nevertheless, model-dependent and they are dominated by light from luminous star forming regions. An alternative and sensitive probe of the metallicity of galaxies is through absorption lines imprinted on the luminous afterglow spectra of long gamma ray bursts (GRBs) from neutral material within their host galaxy. We present results from a JWST/NIRSpec programme to investigate for the first time the relation between the metallicity of neutral gas probed in absorption by GRB afterglows and the metallicity of the star forming regions for the same host galaxy sample. Using an initial sample of eight GRB host galaxies at z=2.1-4.7, we find a tight relation between absorption and emission line metallicities when using the recently proposed $\hat{R}$ metallicity diagnostic (+/-0.2dex). This agreement implies a relatively chemically-homogeneous multi-phase interstellar medium, and indicates that absorption and emission line probes can be directly compared. However, the relation is less clear when using other diagnostics, such as R23 and R3. We also find possible evidence of an elevated N/O ratio in the host galaxy of GRB090323 at z=3.58, consistent with what has been seen in other $z>4$ galaxies. Ultimate confirmation of an enhanced N/O ratio and of the relation between absorption and emission line metallicities will require a more direct determination of the emission line metallicity via the detection of temperature-sensitive auroral lines in our GRB host galaxy sample., Comment: Accepted for publication in MNRAS; 24 pages, 15 figures

Published
2023

42. The cosmic buildup of dust and metals: Accurate abundances from GRB-selected star-forming galaxies at 1.7 < z < 6.3

Author

Heintz, K. E., De Cia, A., Thöne, C. C., Krogager, J.-k., Yates, R. M., Vejlgaard, S., Konstantopoulou, C., Fynbo, J. P. U., Watson, D., Narayanan, D., Wilson, S. N., Arabsalmani, M., Campana, S., D’elia, V., De Pasquale, M., Hartmann, D. H., Izzo, L., Jakobsson, P., Kouveliotou, C., Levan, A., Li, Q., Malesani, D. B., Melandri, A., Milvang-jensen, B., Møller, P., Palazzi, E., Palmerio, J., Petitjean, P., Pugliese, G., Rossi, A., Saccardi, A., Salvaterra, R., Savaglio, S., Schady, P., Stratta, G., Tanvir, N. R., De Ugarte Postigo, A., Vergani, S. D., Wiersema, K., Wijers, R. A. M. J., Zafar, T., Heintz, K. E., De Cia, A., Thöne, C. C., Krogager, J.-k., Yates, R. M., Vejlgaard, S., Konstantopoulou, C., Fynbo, J. P. U., Watson, D., Narayanan, D., Wilson, S. N., Arabsalmani, M., Campana, S., D’elia, V., De Pasquale, M., Hartmann, D. H., Izzo, L., Jakobsson, P., Kouveliotou, C., Levan, A., Li, Q., Malesani, D. B., Melandri, A., Milvang-jensen, B., Møller, P., Palazzi, E., Palmerio, J., Petitjean, P., Pugliese, G., Rossi, A., Saccardi, A., Salvaterra, R., Savaglio, S., Schady, P., Stratta, G., Tanvir, N. R., De Ugarte Postigo, A., Vergani, S. D., Wiersema, K., Wijers, R. A. M. J., and Zafar, T.

Published
2023

43. Dissecting the interstellar medium of a z = 6.3 galaxy

Author

Saccardi, A., primary, Vergani, S. D., additional, De Cia, A., additional, D’Elia, V., additional, Heintz, K. E., additional, Izzo, L., additional, Palmerio, J. T., additional, Petitjean, P., additional, Rossi, A., additional, de Ugarte Postigo, A., additional, Christensen, L., additional, Konstantopoulou, C., additional, Levan, A. J., additional, Malesani, D. B., additional, Møller, P., additional, Ramburuth-Hurt, T., additional, Salvaterra, R., additional, Tanvir, N. R., additional, Thöne, C. C., additional, Vejlgaard, S., additional, Fynbo, J. P. U., additional, Kann, D. A., additional, Schady, P., additional, Watson, D. J., additional, Wiersema, K., additional, Campana, S., additional, Covino, S., additional, De Pasquale, M., additional, Fausey, H., additional, Hartmann, D. H., additional, van der Horst, A. J., additional, Jakobsson, P., additional, Palazzi, E., additional, Pugliese, G., additional, Savaglio, S., additional, Starling, R. L. C., additional, Stratta, G., additional, and Zafar, T., additional

Published
2023
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44. The First JWST Spectrum of a GRB Afterglow: No Bright Supernova in Observations of the Brightest GRB of all Time, GRB 221009A

Author

Levan, A. J., primary, Lamb, G. P., additional, Schneider, B., additional, Hjorth, J., additional, Zafar, T., additional, de Ugarte Postigo, A., additional, Sargent, B., additional, Mullally, S. E., additional, Izzo, L., additional, D’Avanzo, P., additional, Burns, E., additional, Fernández, J. F. Agüí, additional, Barclay, T., additional, Bernardini, M. G., additional, Bhirombhakdi, K., additional, Bremer, M., additional, Brivio, R., additional, Campana, S., additional, Chrimes, A. A., additional, D’Elia, V., additional, Valle, M. Della, additional, De Pasquale, M., additional, Ferro, M., additional, Fong, W., additional, Fruchter, A. S., additional, Fynbo, J. P. U., additional, Gaspari, N., additional, Gompertz, B. P., additional, Hartmann, D. H., additional, Hedges, C. L., additional, Heintz, K. E., additional, Hotokezaka, K., additional, Jakobsson, P., additional, Kann, D. A., additional, Kennea, J. A., additional, Laskar, T., additional, Le Floc’h, E., additional, Malesani, D. B., additional, Melandri, A., additional, Metzger, B. D., additional, Oates, S. R., additional, Pian, E., additional, Piranomonte, S., additional, Pugliese, G., additional, Racusin, J. L., additional, Rastinejad, J. C., additional, Ravasio, M. E., additional, Rossi, A., additional, Saccardi, A., additional, Salvaterra, R., additional, Sbarufatti, B., additional, Starling, R. L. C., additional, Tanvir, N. R., additional, Thöne, C. C., additional, van der Horst, A. J., additional, Vergani, S. D., additional, Watson, D., additional, Wiersema, K., additional, Wijers, R. A. M. J., additional, and Xu, Dong, additional

Published
2023
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45. GRB 160410A: The first chemical study of the interstellar medium of a short GRB

Author

Agüí Fernández, J F, primary, Thöne, C C, additional, Kann, D A, additional, de Ugarte Postigo, A, additional, Selsing, J, additional, Schady, P, additional, Yates, R M, additional, Greiner, J, additional, Oates, S R, additional, Malesani, D B, additional, Xu, D, additional, Klotz, A, additional, Campana, S, additional, Rossi, A, additional, Perley, D A, additional, Blažek, M, additional, D’Avanzo, P, additional, Giunta, A, additional, Hartmann, D, additional, Heintz, K E, additional, Jakobsson, P, additional, Kirkpatrick IV, C C, additional, Kouveliotou, C, additional, Melandri, A, additional, Pugliese, G, additional, Salvaterra, R, additional, Starling, R L C, additional, Tanvir, N R, additional, Vergani, S D, additional, and Wiersema, K, additional

Published
2023
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46. Multiwavelength analysis of short GRB 201221D and its comparison with other high & low redshift short GRBs

Author

Dimple, Misra, K., Kann, D. A., Arun, K. G., Ghosh, A., Gupta, R., Resmi, L., Fernández, J. F. Agüí, Thöne, C. C., Postigo, A. de Ugarte, Pandey, S. B., Yadav, L., Ministerio de Ciencia e Innovación (España), European Commission, and Department of Science and Technology (India)

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Gamma-ray bursts: individual (GRB 201221D), Astrophysics::Cosmology and Extragalactic Astrophysics, Gamma-ray bursts: general, Astrophysics - High Energy Astrophysical Phenomena
Abstract

We present a detailed analysis of short GRB 201221D lying at redshift z = 1.045. We analyse the high-energy data of the burst and compare it with the sample of short gamma-ray bursts (SGRBs). The prompt emission characteristics are typical of those seen in the case of other SGRBs except for the peak energy (Ep), which lies at the softer end (generally observed in the case of long bursts). We estimate the host galaxy properties by utilizing the Python-based software Prospector to fit the spectral energy distribution of the host. The burst lies at a high redshift relative to the SGRB sample with a median redshift of z = 0.47. We compare the burst characteristics with other SGRBs with known redshifts along with GRB 200826A (SGRB originated from a collapsar). A careful examination of the characteristics of SGRBs at different redshifts reveals that some of the SGRBs lying at high redshifts have properties similar to long GRBs indicating they might have originated from collapsars. Further study of these GRBs can help to explore the broad picture of progenitor systems of SGRBs. © 2022 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society., KM, RG, and SBP acknowledge the BRICS grant DST/IMRCD/BRICS/PilotCall1/ProFCheap/2017(G) for the financial support. KGA is partially supported by the Swarnajayanti Fellowship Grant No.DST/SJF/PSA-01/2017-18, MATRICS grant MTR/2020/000177 of SERB, and a grant from the Infosys Foundation. This research is based on observations obtained from the 3.6 m DOT during observing cycle DOT-2020-C2, a National Facility run and managed by ARIES, an autonomous institute under the Department of Science and Technology (DST), Government of India. This research has used data obtained from the High Energy Astrophysics Science Archive Research Center (HEASARC) provided by NASA’s Goddard Space Flight Center., With funding from the Spanish government through the Severo Ochoa Centre of Excellence accreditation SEV-2017-0709.

Published
2022

47. A gravitational-wave standard siren measurement of the Hubble constant

Author

Abbott, B. P., Abbott, R., Abbott, T. D., Acernese, F., Ackley, K., Adams, C., Adams, T., Addesso, P., Adhikari, R. X., Adya, V. B., Affeldt, C., Afrough, M., Agarwal, B., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aiello, L., Ain, A., Ajith, P., Allen, B., Allen, G., Allocca, A., Altin, P. A., Amato, A., Ananyeva, A., Anderson, S. B., Anderson, W. G., Angelova, S. V., Antier, S., Appert, S., Arai, K., Araya, M. C., Areeda, J. S., Arnaud, N., Arun, K. G., Ascenzi, S., Ashton, G., Ast, M., Aston, S. M., Astone, P., Atallah, D. V., Aufmuth, P., Aulbert, C., AultONeal, K., Austin, C., Avila-Alvarez, A., Babak, S., Bacon, P., Bader, M. K. M., Bae, S., Baker, P. T., Baldaccini, F., Ballardin, G., Ballmer, S. W., Banagiri, S., Barayoga, J. C., Barclay, S. E., Barish, B. C., Barker, D., Barkett, K., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Batch, J. C., Bawaj, M., Bayley, J. C., Bazzan, M., Bécsy, B., Beer, C., Bejger, M., Belahcene, I., Bell, A. S., Berger, B. K., Bergmann, G., Bero, J. J., Berry, C. P. L., Bersanetti, D., Bertolini, A., Betzwieser, J., Bhagwat, S., Bhandare, R., Bilenko, I. A., Billingsley, G., Billman, C. R., Birch, J., Birney, R., Birnholtz, O., Biscans, S., Biscoveanu, S., Bisht, A., Bitossi, M., Biwer, C., Bizouard, M. A., Blackburn, J. K., Blackman, J., Blair, C. D., Blair, D. G., Blair, R. M., Bloemen, S., Bock, O., Bode, N., Boer, M., Bogaert, G., Bohe, A., Bondu, F., Bonilla, E., Bonnand, R., Boom, B. A., Bork, R., Boschi, V., Bose, S., Bossie, K., Bouffanais, Y., Bozzi, A., Bradaschia, C., Brady, P. R., Branchesi, M., Brau, J. E., Briant, T., Brillet, A., Brinkmann, M., Brisson, V., Brockill, P., Broida, J. E., Brooks, A. F., Brown, D. A., Brown, D. D., Brunett, S., Buchanan, C. C., Buikema, A., Bulik, T., Bulten, H. J., Buonanno, A., Buskulic, D., Buy, C., Byer, R. L., Cabero, M., Cadonati, L., Cagnoli, G., Cahillane, C., Bustillo, Calderón J., Callister, T. A., Calloni, E., Camp, J. B., Canepa, M., Canizares, P., Cannon, K. C., Cao, H., Cao, J., Capano, C. D., Capocasa, E., Carbognani, F., Caride, S., Carney, M. F., Diaz, Casanueva J., Casentini, C., Caudill, S., Cavaglià, M., Cavalier, F., Cavalieri, R., Cella, G., Cepeda, C. B., Cerdá-Durán, P., Cerretani, G., Cesarini, E., Chamberlin, S. J., Chan, M., Chao, S., Charlton, P., Chase, E., Chassande-Mottin, E., Chatterjee, D., Chatziioannou, K., Cheeseboro, B. D., Chen, H. Y., Chen, X., Chen, Y., Cheng, H.-P., Chia, H., Chincarini, A., Chiummo, A., Chmiel, T., Cho, H. S., Cho, M., Chow, J. H., Christensen, N., Chu, Q., Chua, A. J. K., Chua, S., Chung, A. K. W., Chung, S., Ciani, G., Ciolfi, R., Cirelli, C. E., Cirone, A., Clara, F., Clark, J. A., Clearwater, P., Cleva, F., Cocchieri, C., Coccia, E., Cohadon, P.-F., Cohen, D., Colla, A., Collette, C. G., Cominsky, L. R., Constancio, M., Jr., Conti, L., Cooper, S. J., Corban, P., Corbitt, T. R., Cordero-Carrión, I., Corley, K. R., Cornish, N., Corsi, A., Cortese, S., Costa, C. A., Coughlin, M. W., Coughlin, S. B., Coulon, J.-P., Countryman, S. T., Couvares, P., Covas, P. B., Cowan, E. E., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Creighton, J. D. E., Creighton, T. D., Cripe, J., Crowder, S. G., Cullen, T. J., Cumming, A., Cunningham, L., Cuoco, E., Dal Canton, T., Dálya, G., Danilishin, S. L., DʼAntonio, S., Danzmann, K., Dasgupta, A., Da Silva Costa, C. F., Datrier, L. E. H., Dattilo, V., Dave, I., Davier, M., Davis, D., Daw, E. J., Day, B., De, S., DeBra, D., Degallaix, J., De Laurentis, M., Deléglise, S., Del Pozzo, W., Demos, N., Denker, T., Dent, T., De Pietri, R., Dergachev, V., De Rosa, R., DeRosa, R. T., De Rossi, C., DeSalvo, R., de Varona, O., Devenson, J., Dhurandhar, S., Díaz, M. C., Di Fiore, L., Di Giovanni, M., Di Girolamo, T., Di Lieto, A., Di Pace, S., Di Palma, I., Di Renzo, F., Doctor, Z., Dolique, V., Donovan, F., Dooley, K. L., Doravari, S., Dorrington, I., Douglas, R., álvarez, Dovale M., Downes, T. P., Drago, M., Dreissigacker, C., Driggers, J. C., Du, Z., Ducrot, M., Dupej, P., Dwyer, S. E., Edo, T. B., Edwards, M. C., Effler, A., Eggenstein, H.-B., Ehrens, P., Eichholz, J., Eikenberry, S. S., Eisenstein, R. A., Essick, R. C., Estevez, D., Etienne, Z. B., Etzel, T., Evans, M., Evans, T. M., Factourovich, M., Fafone, V., Fair, H., Fairhurst, S., Fan, X., Farinon, S., Farr, B., Farr, W. M., Fauchon-Jones, E. J., Favata, M., Fays, M., Fee, C., Fehrmann, H., Feicht, J., Fejer, M. M., Fernandez-Galiana, A., Ferrante, I., Ferreira, E. C., Ferrini, F., Fidecaro, F., Finstad, D., Fiori, I., Fiorucci, D., Fishbach, M., Fisher, R. P., Fitz-Axen, M., Flaminio, R., Fletcher, M., Fong, H., Font, J. A., Forsyth, P. W. F., Forsyth, S. S., Fournier, J.-D., Frasca, S., Frasconi, F., Frei, Z., Freise, A., Frey, R., Frey, V., Fries, E. M., Fritschel, P., Frolov, V. V., Fulda, P., Fyffe, M., Gabbard, H., Gadre, B. U., Gaebel, S. M., Gair, J. R., Gammaitoni, L., Ganija, M. R., Gaonkar, S. G., Garcia-Quiros, C., Garufi, F., Gateley, B., Gaudio, S., Gaur, G., Gayathri, V., Gehrels, N., Gemme, G., Genin, E., Gennai, A., George, D., George, J., Gergely, L., Germain, V., Ghonge, S., Ghosh, Abhirup, Ghosh, Archisman, Ghosh, S., Giaime, J. A., Giardina, K. D., Giazotto, A., Gill, K., Glover, L., Goetz, E., Goetz, R., Gomes, S., Goncharov, B., González, G., Castro, Gonzalez J. M., Gopakumar, A., Gorodetsky, M. L., Gossan, S. E., Gosselin, M., Gouaty, R., Grado, A., Graef, C., Granata, M., Grant, A., Gras, S., Gray, C., Greco, G., Green, A. C., Gretarsson, E. M., Groot, P., Grote, H., Grunewald, S., Gruning, P., Guidi, G. M., Guo, X., Gupta, A., Gupta, M. K., Gushwa, K. E., Gustafson, E. K., Gustafson, R., Halim, O., Hall, B. R., Hall, E. D., Hamilton, E. Z., Hammond, G., Haney, M., Hanke, M. M., Hanks, J., Hanna, C., Hannam, M. D., Hannuksela, O. A., Hanson, J., Hardwick, T., Harms, J., Harry, G. M., Harry, I. W., Hart, M. J., Haster, C.-J., Haughian, K., Healy, J., Heidmann, A., Heintze, M. C., Heitmann, H., Hello, P., Hemming, G., Hendry, M., Heng, I. S., Hennig, J., Heptonstall, A. W., Heurs, M., Hild, S., Hinderer, T., Hoak, D., Hofman, D., Holt, K., Holz, D. E., Hopkins, P., Horst, C., Hough, J., Houston, E. A., Howell, E. J., Hreibi, A., Hu, Y. M., Huerta, E. A., Huet, D., Hughey, B., Husa, S., Huttner, S. H., Huynh-Dinh, T., Indik, N., Inta, R., Intini, G., Isa, H. N., Isac, J.-M., Isi, M., Iyer, B. R., Izumi, K., Jacqmin, T., Jani, K., Jaranowski, P., Jawahar, S., Jiménez-Forteza, F., Johnson, W. W., Jones, D. I., Jones, R., Jonker, R. J. G., Ju, L., Junker, J., Kalaghatgi, C. V., Kalogera, V., Kamai, B., Kandhasamy, S., Kang, G., Kanner, J. B., Kapadia, S. J., Karki, S., Karvinen, K. S., Kasprzack, M., Katolik, M., Katsavounidis, E., Katzman, W., Kaufer, S., Kawabe, K., Kéfélian, F., Keitel, D., Kemball, A. J., Kennedy, R., Kent, C., Key, J. S., Khalili, F. Y., Khan, I., Khan, S., Khan, Z., Khazanov, E. A., Kijbunchoo, N., Kim, Chunglee, Kim, J. C., Kim, K., Kim, W., Kim, W. S., Kim, Y.-M., Kimbrell, S. J., King, E. J., King, P. J., Kinley-Hanlon, M., Kirchhoff, R., Kissel, J. S., Kleybolte, L., Klimenko, S., Knowles, T. D., Koch, P., Koehlenbeck, S. M., Koley, S., Kondrashov, V., Kontos, A., Korobko, M., Korth, W. Z., Kowalska, I., Kozak, D. B., Krämer, C., Kringel, V., Krishnan, B., Królak, A., Kuehn, G., Kumar, P., Kumar, R., Kumar, S., Kuo, L., Kutynia, A., Kwang, S., Lackey, B. D., Lai, K. H., Landry, M., Lang, R. N., Lange, J., Lantz, B., Lanza, R. K., Lartaux-Vollard, A., Lasky, P. D., Laxen, M., Lazzarini, A., Lazzaro, C., Leaci, P., Leavey, S., Lee, C. H., Lee, H. K., Lee, H. M., Lee, H. W., Lee, K., Lehmann, J., Lenon, A., Leonardi, M., Leroy, N., Letendre, N., Levin, Y., Li, T. G. F., Linker, S. D., Littenberg, T. B., Liu, J., Liu, X., Lo, R. K. L., Lockerbie, N. A., London, L. T., Lord, J. E., Lorenzini, M., Loriette, V., Lormand, M., Losurdo, G., Lough, J. D., Lousto, C. O., Lovelace, G., Lück, H., Lumaca, D., Lundgren, A. P., Lynch, R., Ma, Y., Macas, R., Macfoy, S., Machenschalk, B., MacInnis, M., Macleod, D. M., Hernandez, Magaña I., Magaña-Sandoval, F., Zertuche, Magaña L., Magee, R. M., Majorana, E., Maksimovic, I., Man, N., Mandic, V., Mangano, V., Mansell, G. L., Manske, M., Mantovani, M., Marchesoni, F., Marion, F., Márka, S., Márka, Z., Markakis, C., Markosyan, A. S., Markowitz, A., Maros, E., Marquina, A., Martelli, F., Martellini, L., Martin, I. W., Martin, R. M., Martynov, D. V., Mason, K., Massera, E., Masserot, A., Massinger, T. J., Masso-Reid, M., Mastrogiovanni, S., Matas, A., Matichard, F., Matone, L., Mavalvala, N., Mazumder, N., McCarthy, R., McClelland, D. E., McCormick, S., McCuller, L., McGuire, S. C., McIntyre, G., McIver, J., McManus, D. J., McNeill, L., McRae, T., McWilliams, S. T., Meacher, D., Meadors, G. D., Mehmet, M., Meidam, J., Mejuto-Villa, E., Melatos, A., Mendell, G., Mercer, R. A., Merilh, E. L., Merzougui, M., Meshkov, S., Messenger, C., Messick, C., Metzdorff, R., Meyers, P. M., Miao, H., Michel, C., Middleton, H., Mikhailov, E. E., Milano, L., Miller, A. L., Miller, B. B., Miller, J., Millhouse, M., Milovich-Goff, M. C., Minazzoli, O., Minenkov, Y., Ming, J., Mishra, C., Mitra, S., Mitrofanov, V. P., Mitselmakher, G., Mittleman, R., Moffa, D., Moggi, A., Mogushi, K., Mohan, M., Mohapatra, S. R. P., Montani, M., Moore, C. J., Moraru, D., Moreno, G., Morriss, S. R., Mours, B., Mow-Lowry, C. M., Mueller, G., Muir, A. W., Mukherjee, Arunava, Mukherjee, D., Mukherjee, S., Mukund, N., Mullavey, A., Munch, J., Muñiz, E. A., Muratore, M., Murray, P. G., Napier, K., Nardecchia, I., Naticchioni, L., Nayak, R. K., Neilson, J., Nelemans, G., Nelson, T. J. N., Nery, M., Neunzert, A., Nevin, L., Newport, J. M., Newton, G., Ng, K. K. Y., Nguyen, T. T., Nichols, D., Nielsen, A. B., Nissanke, S., Nitz, A., Noack, A., Nocera, F., Nolting, D., North, C., Nuttall, L. K., Oberling, J., OʼDea, G. D., Ogin, G. H., Oh, J. J., Oh, S. H., Ohme, F., Okada, M. A., Oliver, M., Oppermann, P., Oram, Richard J., OʼReilly, B., Ormiston, R., Ortega, L. F., OʼShaughnessy, R., Ossokine, S., Ottaway, D. J., Overmier, H., Owen, B. J., Pace, A. E., Page, J., Page, M. A., Pai, A., Pai, S. A., Palamos, J. R., Palashov, O., Palomba, C., Pal-Singh, A., Pan, Howard, Pan, Huang-Wei, Pang, B., Pang, P. T. H., Pankow, C., Pannarale, F., Pant, B. C., Paoletti, F., Paoli, A., Papa, M. A., Parida, A., Parker, W., Pascucci, D., Pasqualetti, A., Passaquieti, R., Passuello, D., Patil, M., Patricelli, B., Pearlstone, B. L., Pedraza, M., Pedurand, R., Pekowsky, L., Pele, A., Penn, S., Perez, C. J., Perreca, A., Perri, L. M., Pfeiffer, H. P., Phelps, M., Piccinni, O. J., Pichot, M., Piergiovanni, F., Pierro, V., Pillant, G., Pinard, L., Pinto, I. M., Pirello, M., Pitkin, M., Poe, M., Poggiani, R., Popolizio, P., Porter, E. K., Post, A., Powell, J., Prasad, J., Pratt, J. W. W., Pratten, G., Predoi, V., Prestegard, T., Prijatelj, M., Principe, M., Privitera, S., Prodi, G. A., Prokhorov, L. G., Puncken, O., Punturo, M., Puppo, P., Pürrer, M., Qi, H., Quetschke, V., Quintero, E. A., Quitzow-James, R., Raab, F. J., Rabeling, D. S., Radkins, H., Raffai, P., Raja, S., Rajan, C., Rajbhandari, B., Rakhmanov, M., Ramirez, K. E., Ramos-Buades, A., Rapagnani, P., Raymond, V., Razzano, M., Read, J., Regimbau, T., Rei, L., Reid, S., Reitze, D. H., Ren, W., Reyes, S. D., Ricci, F., Ricker, P. M., Rieger, S., Riles, K., Rizzo, M., Robertson, N. A., Robie, R., Robinet, F., Rocchi, A., Rolland, L., Rollins, J. G., Roma, V. J., Romano, J. D., Romano, R., Romel, C. L., Romie, J. H., Rosińska, D., Ross, M. P., Rowan, S., Rüdiger, A., Ruggi, P., Rutins, G., Ryan, K., Sachdev, S., Sadecki, T., Sadeghian, L., Sakellariadou, M., Salconi, L., Saleem, M., Salemi, F., Samajdar, A., Sammut, L., Sampson, L. M., Sanchez, E. J., Sanchez, L. E., Sanchis-Gual, N., Sandberg, V., Sanders, J. R., Sassolas, B., Sathyaprakash, B. S., Saulson, P. R., Sauter, O., Savage, R. L., Sawadsky, A., Schale, P., Scheel, M., Scheuer, J., Schmidt, J., Schmidt, P., Schnabel, R., Schofield, R. M. S., Schönbeck, A., Schreiber, E., Schuette, D., Schulte, B. W., Schutz, B. F., Schwalbe, S. G., Scott, J., Scott, S. M., Seidel, E., Sellers, D., Sengupta, A. S., Sentenac, D., Sequino, V., Sergeev, A., Shaddock, D. A., Shaffer, T. J., Shah, A. A., Shahriar, M. S., Shaner, M. B., Shao, L., Shapiro, B., Shawhan, P., Sheperd, A., Shoemaker, D. H., Shoemaker, D. M., Siellez, K., Siemens, X., Sieniawska, M., Sigg, D., Silva, A. D., Singer, L. P., Singh, A., Singhal, A., Sintes, A. M., Slagmolen, B. J. J., Smith, B., Smith, J. R., Smith, R. J. E., Somala, S., Son, E. J., Sonnenberg, J. A., Sorazu, B., Sorrentino, F., Souradeep, T., Spencer, A. P., Srivastava, A. K., Staats, K., Staley, A., Steer, D., Steinke, M., Steinlechner, J., Steinlechner, S., Steinmeyer, D., Stevenson, S. P., Stone, R., Stops, D. J., Strain, K. A., Stratta, G., Strigin, S. E., Strunk, A., Sturani, R., Stuver, A. L., Summerscales, T. Z., Sun, L., Sunil, S., Suresh, J., Sutton, P. J., Swinkels, B. L., Szczepańczyk, M. J., Tacca, M., Tait, S. C., Talbot, C., Talukder, D., Tanner, D. B., Tápai, M., Taracchini, A., Tasson, J. D., Taylor, J. A., Taylor, R., Tewari, S. V., Theeg, T., Thies, F., Thomas, E. G., Thomas, M., Thomas, P., Thorne, K. A., Thrane, E., Tiwari, S., Tiwari, V., Tokmakov, K. V., Toland, K., Tonelli, M., Tornasi, Z., Torres-Forné, A., Torrie, C. I., Töyrä, D., Travasso, F., Traylor, G., Trinastic, J., Tringali, M. C., Trozzo, L., Tsang, K. W., Tse, M., Tso, R., Tsukada, L., Tsuna, D., Tuyenbayev, D., Ueno, K., Ugolini, D., Unnikrishnan, C. S., Urban, A. L., Usman, S. A., Vahlbruch, H., Vajente, G., Valdes, G., van Bakel, N., van Beuzekom, M., van den Brand, J. F. J., Van Den Broeck, C., Vander-Hyde, D. C., van der Schaaf, L., van Heijningen, J. V., van Veggel, A. A., Vardaro, M., Varma, V., Vass, S., Vasúth, M., Vecchio, A., Vedovato, G., Veitch, J., Veitch, P. J., Venkateswara, K., Venugopalan, G., Verkindt, D., Vetrano, F., Viceré, A., Viets, A. D., Vinciguerra, S., Vine, D. J., Vinet, J.-Y., Vitale, S., Vo, T., Vocca, H., Vorvick, C., Vyatchanin, S. P., Wade, A. R., Wade, L. E., Wade, M., Walet, R., Walker, M., Wallace, L., Walsh, S., Wang, G., Wang, H., Wang, J. Z., Wang, W. H., Wang, Y. F., Ward, R. L., Warner, J., Was, M., Watchi, J., Weaver, B., Wei, L.-W., Weinert, M., Weinstein, A. J., Weiss, R., Wen, L., Wessel, E. K., Weßels, P., Westerweck, J., Westphal, T., Wette, K., Whelan, J. T., Whitcomb, S. E., Whiting, B. F., Whittle, C., Wilken, D., Williams, D., Williams, R. D., Williamson, A. R., Willis, J. L., Willke, B., Wimmer, M. H., Winkler, W., Wipf, C. C., Wittel, H., Woan, G., Woehler, J., Wofford, J., Wong, K. W. K., Worden, J., Wright, J. L., Wu, D. S., Wysocki, D. M., Xiao, S., Yamamoto, H., Yancey, C. C., Yang, L., Yap, M. J., Yazback, M., Yu, Hang, Yu, Haocun, Yvert, M., Zadrożny, A., Zanolin, M., Zelenova, T., Zendri, J.-P., Zevin, M., Zhang, L., Zhang, M., Zhang, T., Zhang, Y.-H., Zhao, C., Zhou, M., Zhou, Z., Zhu, S. J., Zhu, X. J., Zimmerman, A. B., Zucker, M. E., Zweizig, J., Foley, R. J., Coulter, D. A., Drout, M. R., Kasen, D., Kilpatrick, C. D., Madore, B. F., Murguia-Berthier, A., Pan, Y.-C., Piro, A. L., Prochaska, J. X., Ramirez-Ruiz, E., Rest, A., Rojas-Bravo, C., Shappee, B. J., Siebert, M. R., Simon, J. D., Ulloa, N., Annis, J., Soares-Santos, M., Brout, D., Scolnic, D., Diehl, H. T., Frieman, J., Berger, E., Alexander, K. D., Allam, S., Balbinot, E., Blanchard, P., Butler, R. E., Chornock, R., Cook, E. R., Cowperthwaite, P., Drlica-Wagner, A., Durret, F., Eftekhari, T., Finley, D. A., Fong, W., Fryer, C. L., García-Bellido, J., Gill, M. S. S., Gruendl, R. A., Hartley, W., Herner, K., Huterer, D., Kessler, R., Li, T. S., Lin, H., Lopes, P. A. A., Lourenço, A. C. C., Margutti, R., Marriner, J., Marshall, J. L., Matheson, T., Medina, G. E., Metzger, B. D., Muñoz, R. R., Muir, J., Nicholl, M., Nugent, P., Palmese, A., Paz-Chinchón, F., Quataert, E., Sako, M., Sauseda, M., Schlegel, D. J., Secco, L. F., Smith, N., Sobreira, F., Stebbins, A., Villar, V. A., Vivas, A. K., Wester, W., Williams, P. K. G., Yanny, B., Zenteno, A., Abbott, T. M. C., Abdalla, F. B., Bechtol, K., Benoit-Lévy, A., Bertin, E., Bridle, S. L., Brooks, D., Buckley-Geer, E., Burke, D. L., Rosell, Carnero A., Kind, Carrasco M., Carretero, J., Castander, F. J., Cunha, C. E., DʼAndrea, C. B., da Costa, L. N., Davis, C., DePoy, D. L., Desai, S., Dietrich, J. P., Estrada, J., Fernandez, E., Flaugher, B., Fosalba, P., Gaztanaga, E., Gerdes, D. W., Giannantonio, T., Goldstein, D. A., Gruen, D., Gutierrez, G., Hartley, W. G., Honscheid, K., Jain, B., James, D. J., Jeltema, T., Johnson, M. W. G., Kent, S., Krause, E., Kron, R., Kuehn, K., Kuhlmann, S., Kuropatkin, N., Lahav, O., Lima, M., Maia, M. A. G., March, M., Miller, C. J., Miquel, R., Neilsen, E., Nord, B., Ogando, R. L. C., Plazas, A. A., Romer, A. K., Roodman, A., Rykoff, E. S., Sanchez, E., Scarpine, V., Schubnell, M., Sevilla-Noarbe, I., Smith, M., Smith, R. C., Suchyta, E., Tarle, G., Thomas, D., Thomas, R. C., Troxel, M. A., Tucker, D. L., Vikram, V., Walker, A. R., Weller, J., Zhang, Y., Haislip, J. B., Kouprianov, V. V., Reichart, D. E., Tartaglia, L., Sand, D. J., Valenti, S., Yang, S., Arcavi, Iair, Hosseinzadeh, Griffin, Howell, Andrew D., McCully, Curtis, Poznanski, Dovi, Vasylyev, Sergiy, Tanvir, N. R., Levan, A. J., Hjorth, J., Cano, Z., Copperwheat, C., de Ugarte-Postigo, A., Evans, P. A., Fynbo, J. P. U., González-Fernández, C., Greiner, J., Irwin, M., Lyman, J., Mandel, I., McMahon, R., Milvang-Jensen, B., OʼBrien, P., Osborne, J. P., Perley, D. A., Pian, E., Palazzi, E., Rol, E., Rosetti, S., Rosswog, S., Rowlinson, A., Schulze, S., Steeghs, D. T. H., Thöne, C. C., Ulaczyk, K., Watson, D., Wiersema, K., Lipunov, V. M., Gorbovskoy, E., Kornilov, V. G., Tyurina, N., Balanutsa, P., Vlasenko, D., Gorbunov, I., Podesta, R., Levato, H., Saffe, C., Buckley, D. A. H., Budnev, N. M., Gress, O., Yurkov, V., Rebolo, R., and Serra-Ricart, M.

Published
2017
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48. A very luminous jet from the disruption of a star by a massive black hole

Author

Andreoni, I., Coughlin, M.W., Perley, D.A., Yao, Y., Lu, W., Cenko, S.B., Kumar, H., Anand, S., Ho, A.Y.Q., Kasliwal, M.M., Postigo, A. de Ugarte, Sagués-Carracedo, A., Schulze, S., Kann, D.A., Kulkarni, S.R., Sollerman, J., Tanvir, N., Rest, A., Izzo, L., Somalwar, J.J., Kaplan, D.L., Ahumada, T., Anupama, G.C., Auchettl, K., Barway, S., Bellm, E.C., Bhalerao, V., Bloom, J.S., Bremer, M., Bulla, M., Burns, E., Campana, S., Chandra, P., Charalampopoulos, P., Cooke, J., D’Elia, V., Das, K.K., Dobie, D., Fernández, J.F.A., Freeburn, J., Fremling, C., Gezari, S., Goode, S., Graham, M.J., Hammerstein, E., Karambelkar, V.R., Kilpatrick, C.D., Kool, E.C., Krips, M., Laher, R.R., Leloudas, G., Levan, A.J., Lundquist, M.J., Mahabal, A.A., Medford, M.S., Miller, M.C., Möller, A., Mooley, K.P., Nayana, A.J., Nir, G., Pang, P.T.H., Paraskeva, E., Perley, R.A., Petitpas, G., Pursiainen, M., Ravi, V., Ridden-Harper, R., Riddle, R., Rigault, M., Rodriguez, A.C., Rusholme, B., Sharma, Y., Smith, I.A., Stein, R.D., Thöne, C., Tohuvavohu, A., Valdes, F., Roestel, J. van, Vergani, S.D., Wang, Q., Zhang, J., Andreoni, I., Coughlin, M.W., Perley, D.A., Yao, Y., Lu, W., Cenko, S.B., Kumar, H., Anand, S., Ho, A.Y.Q., Kasliwal, M.M., Postigo, A. de Ugarte, Sagués-Carracedo, A., Schulze, S., Kann, D.A., Kulkarni, S.R., Sollerman, J., Tanvir, N., Rest, A., Izzo, L., Somalwar, J.J., Kaplan, D.L., Ahumada, T., Anupama, G.C., Auchettl, K., Barway, S., Bellm, E.C., Bhalerao, V., Bloom, J.S., Bremer, M., Bulla, M., Burns, E., Campana, S., Chandra, P., Charalampopoulos, P., Cooke, J., D’Elia, V., Das, K.K., Dobie, D., Fernández, J.F.A., Freeburn, J., Fremling, C., Gezari, S., Goode, S., Graham, M.J., Hammerstein, E., Karambelkar, V.R., Kilpatrick, C.D., Kool, E.C., Krips, M., Laher, R.R., Leloudas, G., Levan, A.J., Lundquist, M.J., Mahabal, A.A., Medford, M.S., Miller, M.C., Möller, A., Mooley, K.P., Nayana, A.J., Nir, G., Pang, P.T.H., Paraskeva, E., Perley, R.A., Petitpas, G., Pursiainen, M., Ravi, V., Ridden-Harper, R., Riddle, R., Rigault, M., Rodriguez, A.C., Rusholme, B., Sharma, Y., Smith, I.A., Stein, R.D., Thöne, C., Tohuvavohu, A., Valdes, F., Roestel, J. van, Vergani, S.D., Wang, Q., and Zhang, J.

Abstract

05 december 2022, Contains fulltext : 286062.pdf (Author’s version preprint ) (Open Access)

Published
2022

49. Dissecting the interstellar medium of a z=6.3 galaxy: X-shooter spectroscopy and HST imaging of the afterglow and environment of the Swift GRB 210905A

Author

Saccardi, A., Vergani, S. D., De Cia, A., D'Elia, V., Heintz, K. E., Izzo, L., Palmerio, J. T., Petitjean, P., Rossi, A., Postigo, A. de Ugarte, Christensen, L., Konstantopoulou, C., Levan, A. J., Malesani, D. B., Møller, P., Ramburuth-Hurt, T., Salvaterra, R., Tanvir, N. R., Thöne, C. C., Vejlgaard, S., Fynbo, J. P. U., Kann, D. A., Schady, P., Watson, D. J., Wiersema, K., Campana, S., Covino, S., De Pasquale, M., Fausey, H., Hartmann, D. H., van der Horst, A. J., Jakobsson, P., Palazzi, E., Pugliese, G., Savaglio, S., Starling, R. L. C., Stratta, G., Zafar, T., Saccardi, A., Vergani, S. D., De Cia, A., D'Elia, V., Heintz, K. E., Izzo, L., Palmerio, J. T., Petitjean, P., Rossi, A., Postigo, A. de Ugarte, Christensen, L., Konstantopoulou, C., Levan, A. J., Malesani, D. B., Møller, P., Ramburuth-Hurt, T., Salvaterra, R., Tanvir, N. R., Thöne, C. C., Vejlgaard, S., Fynbo, J. P. U., Kann, D. A., Schady, P., Watson, D. J., Wiersema, K., Campana, S., Covino, S., De Pasquale, M., Fausey, H., Hartmann, D. H., van der Horst, A. J., Jakobsson, P., Palazzi, E., Pugliese, G., Savaglio, S., Starling, R. L. C., Stratta, G., and Zafar, T.

Abstract

The study of the properties of galaxies in the first billion years after the Big Bang is one of the major topic of current astrophysics. Optical/near-infrared spectroscopy of the afterglows of long Gamma-ray bursts (GRBs) provide a powerful diagnostic tool to probe the interstellar medium (ISM) of their host galaxies and foreground absorbers, even up to the highest redshifts. We analyze the VLT/X-shooter afterglow spectrum of GRB 210905A, triggered by the Swift Neil Gehrels Observatory, and detect neutral-hydrogen, low-ionization, high-ionization, and fine-structure absorption lines from a complex system at z=6.3118, that we associate with the GRB host galaxy. We study the ISM properties of the host system, revealing the metallicity, kinematics and chemical abundance pattern. The total metallicity of the z~6.3 system is [M/H]=-1.72+/-0.13, after correcting for dust-depletion and taking into account alpha-element enhancement. In addition, we determine the overall amount of dust and dust-to-metal mass ratio (DTM) ([Zn/Fe]_fit=0.33+/-0.09, DTM=0.18+/-0.03). We find indications of nucleosynthesis due to massive stars and evidence of peculiar over-abundance of aluminium. From the analysis of fine-structure lines, we determine distances of several kpc for the low-ionization gas clouds closest to the GRB. Those farther distances are possibly due to the high number of ionizing photons. Using the HST/F140W image of the GRB field, we show the GRB host galaxy as well as multiple objects within 2" from the GRB. We discuss the galaxy structure and kinematics that could explain our observations, also taking into account a tentative detection of Lyman-alpha emission. Deep spectroscopic observations with VLT/MUSE and JWST will offer the unique possibility of combining our results with the ionized-gas properties, with the goal of better understanding how galaxies in the reionization era form and evolve., Comment: Accepted Publication (In Press on A&A) - 22 pages, 10 figures, 6 tables - Appendix: 6 figures, 3 tables

Published
2022
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50. Quick Ultra-VIolet Kilonova surveyor (QUVIK)

Author

Werner, N., Řípa, J., Münz, F., Hroch, F., Jelínek, M., Krtička, J., Zajaček, M., Topinka, M., Dániel, V., Gromeš, J., Václavík, J., Steiger, L., Lédl, V., Seginak, J., Benáček, J., Budaj, J., Faltová, N., Gális, R., Jadlovský, D., Janík, J., Kajan, M., Karas, V., Korčáková, D., Kosiba, M., Krtičková, I., Kubát, J., Kubátová, B., Kurfürst, P., Labaj, M., Mikulášek, Z., Pál, A., Paunzen, E., Piecka, M., Prišegen, M., Ramezani, T., Skarka, M., Szász, G., Thöne, C., Zejda, M., Werner, N., Řípa, J., Münz, F., Hroch, F., Jelínek, M., Krtička, J., Zajaček, M., Topinka, M., Dániel, V., Gromeš, J., Václavík, J., Steiger, L., Lédl, V., Seginak, J., Benáček, J., Budaj, J., Faltová, N., Gális, R., Jadlovský, D., Janík, J., Kajan, M., Karas, V., Korčáková, D., Kosiba, M., Krtičková, I., Kubát, J., Kubátová, B., Kurfürst, P., Labaj, M., Mikulášek, Z., Pál, A., Paunzen, E., Piecka, M., Prišegen, M., Ramezani, T., Skarka, M., Szász, G., Thöne, C., and Zejda, M.

Abstract

We present a near-UV space telescope on a ~70kg micro-satellite with a moderately fast repointing capability and a near real-time alert communication system that has been proposed in response to a call for an ambitious Czech national mission. The mission, which has recently been approved for Phase 0, A, and B1 study shall measure the brightness evolution of kilonovae, resulting from mergers of neutron stars in the near-UV band and thus it shall distinguish between different explosion scenarios. Between the observations of transient sources, the satellite shall perform observations of other targets of interest, a large part of which will be chosen in open competition., Comment: SPIE Astronomical Telescopes and Instrumentation

Published
2022

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