Monte Carlo Simulations of GRB Afterglows
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On the Association of Gamma-Ray Bursts with Supernovae Dieter H
Clemson University TigerPrints Publications Physics and Astronomy Summer 7-24-1998 On the Association of Gamma-Ray Bursts with Supernovae Dieter H. Hartmann Department of Physics and Astronomy, Clemson University, [email protected] R. M. Kippen Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville & NASA/Marshall Space Flight Center & NASA/Marshall Space Flight Center M. S. Briggs Physics Department, University of Alabama in Huntsville & NASA/Marshall Space Flight Center J. M. Kommers Department of Physics and Center for Space Research, Massachusetts nI stitute of Technology C. Kouveliotou Universities Space Research Association & NASA/Marshall Space Flight Center See next page for additional authors Follow this and additional works at: https://tigerprints.clemson.edu/physastro_pubs Recommended Citation Please use publisher's recommended citation. This Article is brought to you for free and open access by the Physics and Astronomy at TigerPrints. It has been accepted for inclusion in Publications by an authorized administrator of TigerPrints. For more information, please contact [email protected]. Authors Dieter H. Hartmann, R. M. Kippen, M. S. Briggs, J. M. Kommers, C. Kouveliotou, K. Hurley, C. R. Robinson, J. van Paradijs, T. J. Galama, and P. M. Vresswijk This article is available at TigerPrints: https://tigerprints.clemson.edu/physastro_pubs/83 Re-Submitted to ApJL 24-Jul-98 On the Association of Gamma-Ray Bursts with Supernovae R. M. Kippen,1,2,3 M. S. Briggs,4,2 J. M. Kommers,5 C. Kouveliotou,6,2 K. Hurley,7 C. R. Robinson,6,2 J. van Paradijs,5,8 D. H. Hartmann,9 T. -
Physical Parameters of GRB 970508 and GRB 971214 from Their
SUBMITTED 22-APR-99 TO ASTROPHYSICAL JOURNAL, IN ORIGNAL FORM 26-MAY-98 Preprint typeset using LATEX style emulateapj PHYSICAL PARAMETERS OF GRB 970508 AND GRB 971214 FROM THEIR AFTERGLOW SYNCHROTRON EMISSION R.A.M.J. WIJERS1 AND T.J. GALAMA2 SUBMITTED 22-APR-99 to Astrophysical Journal, in orignal form 26-MAY-98 ABSTRACT We have calculated synchrotron spectra of relativistic blast waves, and find predicted characteristic frequencies that are more than an order of magnitude different from previous calculations. For the case of an adiabatically expanding blast wave, which is applicable to observed gamma-ray burst (GRB) afterglows at late times, we give expressions to infer the physical properties of the afterglow from the measured spectral features. We show that enough data exist for GRB970508to compute unambiguously the ambient density, n =0.03cm−3, and the blast wave energy per unit solid angle, =3 1052 erg/4π sr. We also compute the energy density in electrons and magnetic field. We find that they areE 12%× and 9%, respectively, of the nucleon energy density and thus confirm for the first time that both are close to but below equipartition. For GRB971214,we discuss the break found in its spectrum by Ramaprakash et al. (1998). It can be interpreted either as the peak frequency or as the cooling frequency; both interpretations have some problems, but on balance the break is more likely to be the cooling frequency. Even when we assume this, our ignorance of the self- absorption frequency and presence or absence of beaming make it impossible to constrain the physical parameters of GRB971214 very well. -
Shota Kisaka
Electromagnetic Counterparts to Neutron Star Binary Mergers Shota Kisaka (Aoyama Gakuin Univ.) Collaborators : Kunihito Ioka, Takashi Nakamura, Ehud Nakar, Takanori Sakamoto Merger of Neutron Star Binaries EM counterparts to GW sources are important to maximize scientific returns from the detection of GWs. Metzger & Berger 12 e.g., ・Localization ・Origin of short GRBs ・Equation of state ・r-process enrichment NS NS BH NS NS binary Merger Ejecta Hotokezaka+ 13 Bounded mass 1 Md 10− M Ejecta mass⇠ 4 2 NS-NS: Mej 10− 10− M ⇠ 1 − BH-NS: Mej . 10− M Ejecta velocity v 0.1 0.3c ej ⇠ − Homologous expansion R v t ej ⇠ ej r-process nucleosynthesis Neutron-rich Ejecta ⇒ Tn capture <Tβ decay Wanajo+ 14 − − Energy Sources ・Rotation energy: MBH 1053 erg (a/MBH =0.5) ⇠ 3M ✓ ◆ ・Disk gravitational energy: 52 Md 10 1 erg ⇠ 10− M ✓ ◆ ・Ejecta kinetic energy: 2 51 Mej vej 10 2 erg ⇠ 10− M 0.3c ✓ ◆ ・Radioactivity: ⇣ ⌘ 49 ✏ Mej 10 3 2 erg ⇠ 10− 10− M ⇣ ⌘ ✓ ◆ NS or BH ・Magnetic field: B 2 1048 erg ⇠ 1015G ✓ ◆ Metzger & Berger 12 EM Counterparts ・Gamma-ray Bursts t < 106 s Rotation/disk grav. energies ・Macronovae/Kilonovae t ~ 10 day Radioactivity (?) ・Remnants of Merger Ejecta t ~ yr Ejecta kinetic energy NS or BH Metzger & Berger 12 Gamma-Ray Bursts Light Curve Extended emission : L ~ 1048 erg/s, T ~ 102 s Plateau emission : L ~ 1045 erg/s, T ~ 104 s cf. Prompt emission L ~ 1050 - 1051 erg/s T ~ 0.1 – 1 s Total energy is comparable ~ 1050 - 1051 erg Prompt emission Prompt NS scenario (Gompertz+ 13) (Propeller → wind) BH scenario (SK & Ioka 15) Gompertz+ -
GRB 190114C: an Upgraded Legend Arxiv:1901.07505V2 [Astro-Ph.HE] 25 Mar 2019
GRB 190114C: An Upgraded Legend Yu Wang1;2, Liang Li 1, Rahim Moradi 1;2, Remo Ruffini 1;2;3;4;5;6 1ICRANet, P.zza della Repubblica 10, 65122 Pescara, Italy. 2ICRA and Dipartimento di Fisica, Sapienza Universita` di Roma, P.le Aldo Moro 5, 00185 Rome, Italy. 3ICRANet - INAF, Viale del Parco Mellini 84, 00136 Rome, Italy. 4Universite´ de Nice Sophia Antipolis, CEDEX 2, Grand Chateauˆ Parc Valrose, Nice, France. 5ICRANet-Rio, Centro Brasileiro de Pesquisas F´ısicas, Rua Dr. Xavier Sigaud 150, 22290–180 Rio de Janeiro, Brazil. 6ICRA, University Campus Bio-Medico of Rome, Via Alvaro del Portillo 21, I-00128 Rome, Italy. [email protected], [email protected], [email protected], ruffi[email protected] arXiv:1901.07505v2 [astro-ph.HE] 25 Mar 2019 1 Gamma-ray burst (GRB) 190114C first resembles the legendary GRB 130427A: Both are strong sources of GeV emission, exhibiting consistent GeV spectral evolution, and almost identical in detail for the morphology of light-curves in X-ray, gamma-ray and GeV bands, inferring a standard system with differ- ent scales. GRB 190114C is richer than GRB 130427A: a large percentage of ∼ 30% energy is thermal presenting in the gamma-ray prompt emission, mak- ing it as one of the most thermal-prominent GRBs; Moreover, GRB 190114C extends the horizon of GRB research, that for the first time the ultra-high energy TeV emission (> 300 GeV) is detected in a GRB as reported by the MAGIC team. Furthermore, GRB 190114C urges us to revisit the traditional theoretical framework, since most of the GRB’s energy may emit in the GeV and TeV range, not in the conventional MeV range. -
The Short Gamma-Ray Burst Revolution
Reports from Observers The Short Gamma-Ray Burst Revolution Jens Hjorth1 the afterglow light-curve properties and Afterglows – found! Andrew Levan ,3 possible high-redshift origin of some Nial Tanvir 4 short bursts suggests that more than Finally, in May 005 Swift discovered the Rhaana Starling 4 one progenitor type may be involved. first X-ray afterglow to a short GRB. Sylvio Klose5 This was made possible because of the Chryssa Kouveliotou6 rapid ability of Swift to slew across the Chloé Féron1 A decade ago studies of gamma-ray sky, pointing at the approximate location Patrizia Ferrero5 bursts (GRBs) were revolutionised by the of the burst only a minute after it hap- Andy Fruchter 7 discovery of long-lived afterglow emis- pened and pinpointing a very faint X-ray Johan Fynbo1 sion at X-ray, optical and radio wave- afterglow. The afterglow lies close to a Javier Gorosabel 8 lengths. The afterglows provided precise massive elliptical galaxy in a cluster of Páll Jakobsson positions on the sky, which in turn led galaxies at z = 0.225 (Gehrels et al. 005; David Alexander Kann5 to the discovery that GRBs originate at Pedersen et al. 005; Figure ). Many ex- Kristian Pedersen1 cosmological distances, and are thus the tremely deep observations, including Enrico Ramirez-Ruiz 9 most luminous events known in the Uni- those at the VLT, failed to locate either a Jesper Sollerman1 verse. These afterglows also provided fading optical afterglow, or a rising super- Christina Thöne1 essential information for our understand- nova component at later times (Hjorth Darach Watson1 ing of what creates these extraordinary et al. -
Glossary of Terms Absorption Line a Dark Line at a Particular Wavelength Superimposed Upon a Bright, Continuous Spectrum
Glossary of terms absorption line A dark line at a particular wavelength superimposed upon a bright, continuous spectrum. Such a spectral line can be formed when electromag- netic radiation, while travelling on its way to an observer, meets a substance; if that substance can absorb energy at that particular wavelength then the observer sees an absorption line. Compare with emission line. accretion disk A disk of gas or dust orbiting a massive object such as a star, a stellar-mass black hole or an active galactic nucleus. An accretion disk plays an important role in the formation of a planetary system around a young star. An accretion disk around a supermassive black hole is thought to be the key mecha- nism powering an active galactic nucleus. active galactic nucleus (agn) A compact region at the center of a galaxy that emits vast amounts of electromagnetic radiation and fast-moving jets of particles; an agn can outshine the rest of the galaxy despite being hardly larger in volume than the Solar System. Various classes of agn exist, including quasars and Seyfert galaxies, but in each case the energy is believed to be generated as matter accretes onto a supermassive black hole. adaptive optics A technique used by large ground-based optical telescopes to remove the blurring affects caused by Earth’s atmosphere. Light from a guide star is used as a calibration source; a complicated system of software and hardware then deforms a small mirror to correct for atmospheric distortions. The mirror shape changes more quickly than the atmosphere itself fluctuates. -
Luglio – Settembre 2017
Raccolta di Flash news dal sito www.ilcosmo.net Luglio – Settembre 2017 Mappa di tutti gli elementi noti che formano i detriti spaziali intorno alla Terra. Questa raccolta consente l’archiviazione personale di tutte le Flash news comparse sulla homepage del nostro sito nel periodo sopra indicato. Non vi sono ulteriori commenti alle notizie. Sono impaginate in ordine cronologico di uscita. La redazione. Assemblato da Luigi Borghi. Associazione Culturale “Il C.O.S.MO.” (Circolo di Osservazione Scientifico-tecnologica di Modena); C.F.:94144450361 pag: 1 di 50 Questa raccolta, le copie arretrate, i suoi articoli, non possono essere duplicati e commercializzati. È vietata ogni forma di riproduzione, anche parziale, senza l’autorizzazione scritta del circolo “Il C.O.S.Mo”. La loro diffusione all’esterno del circolo e’ vietata. Può essere utilizzata solo dai soci per scopi didattici. - Costo: Gratuito sul WEB per i soci . Raccolta di Flash news dal sito www.ilcosmo.net 1/7/2017 - Il robot che pulirà lo spazio. Sono parecchi anni che gli scienziati e le università di tutto il mondo cercano di risolvere questo enorme problema della sicurezza del volo spaziale: l’accumulo di detriti su orbite operative è potenzialmente devastante per qualsiasi tipo di veicolo spaziale, dai satelliti operativi alle missione con astronauti ed alla ISS. Che non sia un problema facile lo si evince dalla velocità di questi “proiettili” che si aggira sui 28.000 km orari e oltre, dalla impossibilità di identificarne la composizione e dalla impssibilità di determinare i punti di presa di oggetti che, nella maggior parte dei casi, sono pure in rapida rotazione su se stessi. -
Radio Observations of the Host Galaxies of Short Gamma-Ray Bursts
Radio observations of the host galaxies of short Gamma-Ray Bursts Dissertation zur Erlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) vorgelegt dem Rat der Physikalisch-Astronomischen Fakultat¨ der Friedrich-Schiller-Universitat¨ Jena von M. Sc. Ana Maria Nicuesa Guelbenzu Gutachter 1. Prof. Dr. Katharina Schreyer, Friedrich-Schiller-Universit¨at Jena, Germany 2. Prof. Dr. Ulrich Heber, Friedrich-Alexander-Universit¨at Erlangen-N¨urnberg, Germany 3. Prof. Dr. Giampaolo Piotto, University of Padua, Italy Tag der Disputation: 13.03.2020 a mi madre Magdalena Guelbenzu Bandr´es . Contents 1 Introduction 1 1.1GRBs,theirafterglowsandprogenitors...................... 1 1.1.1 Theburstsandtheirbimodaldistribution.................. 1 1.1.2 Theafterglows............................... 3 1.1.3 GRBprogenitormodels........................... 6 1.1.4 ShortGRBs................................. 7 1.2 Long-GRB host galaxies . .......................... 9 1.2.1 Photometricstudies............................. 9 1.2.2 Spectroscopicstudies............................ 10 1.2.2.1 Starformationrates....................... 11 1.2.2.2 GRBenvironments,ISMmetallicities.............. 11 1.2.3 Legacysamples............................... 14 1.2.4 Radioobservations............................. 15 1.3Short-GRBhostgalaxies.............................. 18 1.3.1 Host galaxies as tracers of the nature of the short-GRB progenitors . 18 1.3.2 IdentifyingthehostgalaxiesofshortGRBs................ 20 1.3.3 Previousradiostudiesofshort-GRBhostgalaxies............ -
Constraining the Progenitor and Central Engine of Gamma-Ray Bursts with Observational Data
UNLV Theses, Dissertations, Professional Papers, and Capstones 5-1-2015 Constraining the Progenitor and Central Engine of Gamma-ray Bursts with Observational Data Lu Houjun University of Nevada, Las Vegas Follow this and additional works at: https://digitalscholarship.unlv.edu/thesesdissertations Part of the Stars, Interstellar Medium and the Galaxy Commons Repository Citation Houjun, Lu, "Constraining the Progenitor and Central Engine of Gamma-ray Bursts with Observational Data" (2015). UNLV Theses, Dissertations, Professional Papers, and Capstones. 2366. http://dx.doi.org/10.34917/7645921 This Dissertation is protected by copyright and/or related rights. It has been brought to you by Digital Scholarship@UNLV with permission from the rights-holder(s). You are free to use this Dissertation in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s) directly, unless additional rights are indicated by a Creative Commons license in the record and/or on the work itself. This Dissertation has been accepted for inclusion in UNLV Theses, Dissertations, Professional Papers, and Capstones by an authorized administrator of Digital Scholarship@UNLV. For more information, please contact [email protected]. CONSTRAINING THE PROGENITOR AND CENTRAL ENGINE OF GAMMA-RAY BURSTS WITH OBSERVATIONAL DATA by HOUJUN L¨u Bachelor of Science Neijiang Normal University, China 2007 Master of Science Guangxi University, China 2010 A dissertation -
Arxiv:Astro-Ph/0605570V2 3 Jun 2006 .Boer, M
HETE-2 Localizations and Observations of Four Short Gamma-Ray Bursts: GRBs 010326B, 040802, 051211 and 060121 T. Q. Donaghy,1 D. Q. Lamb,1 T. Sakamoto,2 J. P. Norris,2 Y. Nakagawa,3 J. Villasenor,4 J.-L. Atteia,5 R. Vanderspek,4 C. Graziani,1 N. Kawai,6,7 G. R. Ricker,4 G. B. Crew,4 J. Doty,18,4 G. Prigozhin,4 J. G. Jernigan,8 Y. Shirasaki,9,7 M. Suzuki,6 N. Butler,8,4 K. Hurley,8 T. Tamagawa,7 A. Yoshida,3,7 M. Matsuoka,11 E. E. Fenimore,10 M. Galassi,10 M. Boer,12,21 J.-P. Dezalay,12 J.-F. Olive,12 A. Levine,4 F. Martel,19,4 E. Morgan,4 R. Sato,6 S. E. Woosley,13 J. Braga,14 R. Manchanda,15 G. Pizzichini,16 K. Takagishi,17 and M. Yamauchi17 arXiv:astro-ph/0605570v2 3 Jun 2006 –2– ABSTRACT Here we report the localizations and properties of four short-duration GRBs localized by the High Energy Transient Explorer 2 satellite (HETE-2): GRBs 1Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637. 4MIT Kavli Institute, Massachusetts Institute of Technology, 70 Vassar Street, Cambridge, MA, 02139. 3Department of Physics, Aoyama Gakuin University, Chitosedai 6-16-1 Setagaya-ku, Tokyo 157-8572, Japan. 5Laboratoire d’Astrophysique, Observatoire Midi-Pyr´en´ees, 14 Ave. E. Belin, 31400 Toulouse, France. 6Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan. 7RIKEN (Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. -
MEMORIA IAC 2013 Pero No Todo Son Balances Positivos
MEMORIA 2013 “INSTITUTO DE ASTROFÍSICA DE CANARIAS” EDITA: Unidad de Comunicación y Cultura Científica (UC3) del Instituto de Astrofísica de Canarias (IAC) MAQUETA E IMPRIME: Printisur DEPÓSITO LEGAL: 7- PRESENTACIÓN Índice general 8- CONSORCIO PÚBLICO IAC 12- LOS OBSERVATORIOS DE CANARIAS 14- - Observatorio del Teide (OT) 15- - Observatorio del Roque de los Muchachos (ORM) 16- COMISIÓN PARA LA ASIGNACIÓN DE TIEMPO (CAT) 20- ACUERDOS 22- GRAN TELESCOPIO CANARIAS (GTC) 26- ÁREA DE INVESTIGACIÓN 29- - Estructura del Universo y Cosmología 47- - El Universo Local 80- - Física de las estrellas, Sistemas Planetarios y Medio Interestelar 107- - El Sol y el Sistema Solar 137- - Instrumentación y Espacio 161- - Otros 174- ÁREA DE INSTRUMENTACIÓN 174- - Ingeniería 188- - Producción 192- - Oficina de Proyectos Institucionales y Transferencia de Resultados de Investigación (OTRI) 201- ÁREA DE ENSEÑANZA 201- - Cursos de doctorado 203- - Seminarios científicos 207- - Coloquios 207- - Becas 209- - Tesis doctorales 209- - XXIV Escuela de Invierno: ”Aplicaciones astrofísicas de las lentes gravitatorias” 211- ADMINISTRACIÓN DE SERVICIOS GENERALES 211- - Instituto de Astrofísica 213- - Oficina Técnica para la Protección de la Calidad del Cielo (OTPC) 216- - Observatorio del Teide 216- - Observatorio del Roque de los Muchachos 217- - Centro de Astrofísica de la Palma 218- - Ejecución del Presupuesto 2013 219- GABINETE DE DIRECCIÓN 219- - Ediciones 220- - Carteles 220- - Comunicación y divulgación 232- - Web 234- - Visitas a las instalaciones del IAC 237- -
Theory of Gamma-Ray Burst Emission in Light of BSAX Results
1 Theory of Gamma-Ray Burst Emission in Light of BSAX Results⋆ M. Tavani a,b a IFCTR/CNR, via Bassini 15, I-20133 Milano (Italy). b Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (USA). We briefly discuss the theoretical implications of recent detections of gamma-ray bursts (GRBs) by BSAX. Relativistic shock wave theories of fireball expansion are challenged by the wealth of X-ray, optical and radio data obtained after the discovery of the first X-ray GRB afterglow. BSAX data contribute to address several issues concerning the initial and afterglow GRB emission. The observations also raise many questions that are still unsolved. The synchrotron shock model is in very good agreement with time-resolved broad-band spectra (2–500 keV) for the majority of GRBs detected by BSAX. 1. A Year of Surprise optical and radio data, and many problems re- main unsolved at the moment. We briefly discuss The discovery of X-ray afterglows by BSAX here some of the open issues. revolutionized the field of GRB research [8,14, BSAX showed for the first time that a sub- 35]. The discovery cought us by surprise. Cer- stantial fraction of GRB energy is dissipated in tainly, there was no theoretical prediction of hard the X-ray range at late times (hours, days, some- [14,51] high-energy emission lasting hours-days times weeks) after the main impulsive events. after the main events. ‘Pre-BSAX models’ of Are classical GRBs the tip of the iceberg of more GRB shock waves predicted a much faster decay complex radiation processes lasting much longer of the hard component produced by the initial than expected from the cooling timescales of ini- impulsive particle acceleration (e.g., [25]).