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The Astrophysical Journal (ApJ)

Resumen/Descripción – provisto por la editorial en inglés
The Astrophysical Journal is an open access journal devoted to recent developments, discoveries, and theories in astronomy and astrophysics. Publications in ApJ constitute significant new research that is directly relevant to astrophysical applications, whether based on observational results or on theoretical insights or modeling.
Palabras clave – provistas por la editorial

astronomy; astrophysics

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Institución detectada Período Navegá Descargá Solicitá
No detectada desde jul. 1995 / hasta dic. 2023 IOPScience

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revistas

ISSN impreso

0004-637X

ISSN electrónico

1538-4357

Editor responsable

American Astronomical Society (AAS)

Idiomas de la publicación

  • inglés

País de edición

Reino Unido

Información sobre licencias CC

https://creativecommons.org/licenses/by/4.0/

Cobertura temática

Tabla de contenidos

The Redshift Dependence of the Alcock–Paczynski Effect: Cosmological Constraints from the Current and Next Generation Observations

Xiao-Dong Li; Haitao Miao; Xin Wang; Xue ZhangORCID; Feng Fang; Xiaolin Luo; Qing-Guo Huang; Miao Li

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 92

Plasma Motion inside Flaring Regions Revealed by Doppler Shift Information from SDO/EVE Observations

Zhixun ChengORCID; Yuming WangORCID; Rui LiuORCID; Zhenjun ZhouORCID; Kai LiuORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 93

On the Nature of the Compact Sources in IRAS 16293–2422 Seen at Centimeter to Submillimeter Wavelengths

Antonio Hernández-GómezORCID; Laurent LoinardORCID; Claire J. ChandlerORCID; Luis F. RodríguezORCID; Luis A. ZapataORCID; David J. WilnerORCID; Paul T. P. Ho; Emmanuel CauxORCID; David QuénardORCID; Sandrine BottinelliORCID; Crystal L. BroganORCID; Lee HartmannORCID; Karl M. MentenORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 94

Fate of the Runner in Hit-and-run Collisions

Alexandre EmsenhuberORCID; Erik AsphaugORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 95

Dust Continuum Emission and the Upper Limit Fluxes of Submillimeter Water Lines of the Protoplanetary Disk around HD 163296 Observed by ALMA

Shota NotsuORCID; Eiji AkiyamaORCID; Alice Booth; Hideko NomuraORCID; Catherine WalshORCID; Tomoya HirotaORCID; Mitsuhiko HondaORCID; Takashi TsukagoshiORCID; T. J. MillarORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 96

The Cumulative Mass Profile of the Milky Way as Determined by Globular Cluster Kinematics from Gaia DR2

Gwendolyn EadieORCID; Mario JurićORCID

<jats:title>Abstract</jats:title> <jats:p>We present new mass estimates and cumulative mass profiles (CMPs) with Bayesian credible regions for the Milky Way (MW) Galaxy, given the kinematic data of globular clusters (GCs) as provided by (1) the <jats:italic>Gaia</jats:italic> DR2 collaboration and the HSTPROMO team, and (2) the new catalog in Vasiliev (2019). We use GCs beyond 15 kpc to estimate the CMP of the MW, assuming a total gravitational potential model <jats:inline-formula> <jats:tex-math> <?CDATA ${\rm{\Phi }}(r)={{\rm{\Phi }}}_{\circ }{r}^{-\gamma }$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjab0f97ieqn1.gif" xlink:type="simple" /> </jats:inline-formula>, which approximates an NFW-type potential at large distances when <jats:italic>γ</jats:italic> = 0.5. We compare the resulting CMPs given data sets (1) and (2), and find the results to be nearly identical. The median estimate for the total mass is <jats:italic>M</jats:italic> <jats:sub>200</jats:sub> = 0.70 × 10<jats:sup>12</jats:sup> <jats:italic>M</jats:italic> <jats:sub>⊙</jats:sub> and the 50% Bayesian credible interval is <jats:inline-formula> <jats:tex-math> <?CDATA $(0.62,0.81)\times {10}^{12}\,{M}_{\odot }$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjab0f97ieqn2.gif" xlink:type="simple" /> </jats:inline-formula>. However, because the Vasiliev catalog contains more complete data at large <jats:italic>r</jats:italic>, the MW total mass is slightly more constrained by these data. In this work, we also supply instructions for how to create a CMP for the MW with Bayesian credible regions, given a model for <jats:italic>M</jats:italic>(&lt;<jats:italic>r</jats:italic>) and samples drawn from a posterior distribution. With the CMP, we can report median estimates and 50% Bayesian credible regions for the MW mass within any distance (e.g., <jats:inline-formula> <jats:tex-math> <?CDATA $M(r=25\,\mathrm{kpc})=0.26\,(0.20,0.36)\times {10}^{12}\,{M}_{\odot }$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjab0f97ieqn3.gif" xlink:type="simple" /> </jats:inline-formula>, <jats:inline-formula> <jats:tex-math> <?CDATA $M(r=50\,\mathrm{kpc})\,=0.37\,(0.29,0.51)\times {10}^{12}\,{M}_{\odot }$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjab0f97ieqn4.gif" xlink:type="simple" /> </jats:inline-formula>, <jats:inline-formula> <jats:tex-math> <?CDATA $M(r\,=100\,\mathrm{kpc})=0.53\,(0.41,0.74)\times {10}^{12}\,{M}_{\odot }$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjab0f97ieqn5.gif" xlink:type="simple" /> </jats:inline-formula>, etc.), making it easy to compare our results directly to other studies.</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 159

Low-latency Gravitational-wave Alerts for Multimessenger Astronomy during the Second Advanced LIGO and Virgo Observing Run

B. P. Abbott; R. Abbott; T. D. Abbott; S. Abraham; F. Acernese; K. Ackley; C. Adams; R. X. Adhikari; V. B. Adya; C. Affeldt; M. Agathos; K. Agatsuma; N. Aggarwal; O. D. Aguiar; L. Aiello; A. Ain; P. Ajith; G. Allen; A. Allocca; M. A. Aloy; P. A. Altin; A. Amato; A. Ananyeva; S. B. Anderson; W. G. Anderson; S. V. Angelova; S. Antier; S. Appert; K. Arai; M. C. Araya; J. S. Areeda; M. Arène; N. Arnaud; S. Ascenzi; G. Ashton; S. M. Aston; P. Astone; F. Aubin; P. Aufmuth; K. AultONeal; C. Austin; V. Avendano; A. Avila-Alvarez; S. Babak; P. Bacon; F. Badaracco; M. K. M. Bader; S. Bae; P. T. Baker; F. Baldaccini; G. Ballardin; S. W. Ballmer; S. Banagiri; J. C. Barayoga; S. E. Barclay; B. C. Barish; D. Barker; K. Barkett; S. Barnum; F. Barone; B. Barr; L. Barsotti; M. Barsuglia; D. Barta; J. Bartlett; I. BartosORCID; R. Bassiri; A. Basti; M. Bawaj; J. C. Bayley; M. Bazzan; B. Bécsy; M. Bejger; I. Belahcene; A. S. Bell; D. Beniwal; B. K. Berger; G. Bergmann; S. Bernuzzi; J. J. Bero; C. P. L. Berry; D. Bersanetti; A. Bertolini; J. Betzwieser; R. Bhandare; J. Bidler; I. A. Bilenko; S. A. Bilgili; G. Billingsley; J. Birch; R. Birney; O. Birnholtz; S. Biscans; S. Biscoveanu; A. Bisht; M. Bitossi; M. A. Bizouard; J. K. Blackburn; C. D. Blair; D. G. Blair; R. M. Blair; S. Bloemen; N. Bode; M. Boer; Y. Boetzel; G. Bogaert; F. Bondu; E. Bonilla; R. Bonnand; P. Booker; B. A. Boom; C. D. Booth; R. Bork; V. Boschi; S. Bose; K. Bossie; V. Bossilkov; J. Bosveld; Y. Bouffanais; A. Bozzi; C. Bradaschia; P. R. Brady; A. Bramley; M. Branchesi; J. E. Brau; T. Briant; J. H. Briggs; F. Brighenti; A. Brillet; M. Brinkmann; V. Brisson; P. Brockill; A. F. Brooks; D. D. Brown; S. Brunett; A. Buikema; T. Bulik; H. J. Bulten; A. Buonanno; D. Buskulic; C. Buy; R. L. Byer; M. Cabero; L. Cadonati; G. Cagnoli; C. Cahillane; J. Calderón Bustillo; T. A. Callister; E. Calloni; J. B. Camp; W. A. Campbell; M. Canepa; K. C. Cannon; H. Cao; J. Cao; E. Capocasa; F. Carbognani; S. Caride; M. F. Carney; G. Carullo; J. Casanueva Diaz; C. Casentini; S. Caudill; M. Cavaglià; F. Cavalier; R. Cavalieri; G. Cella; P. Cerdá-Durán; G. Cerretani; E. Cesarini; O. Chaibi; K. Chakravarti; S. J. Chamberlin; M. Chan; S. Chao; P. CharltonORCID; E. A. Chase; E. Chassande-Mottin; D. Chatterjee; M. Chaturvedi; B. D. Cheeseboro; H. Y. Chen; X. Chen; Y. Chen; H.-P. Cheng; C. K. Cheong; H. Y. Chia; A. Chincarini; A. Chiummo; G. Cho; H. S. Cho; M. Cho; N. Christensen; Q. Chu; S. Chua; K. W. Chung; S. Chung; G. Ciani; A. A. Ciobanu; R. Ciolfi; F. Cipriano; A. Cirone; F. Clara; J. A. Clark; P. Clearwater; F. Cleva; C. Cocchieri; E. Coccia; P.-F. Cohadon; D. Cohen; R. Colgan; M. Colleoni; C. G. Collette; C. Collins; L. R. Cominsky; M. Constancio; L. Conti; S. J. Cooper; P. Corban; T. R. Corbitt; I. Cordero-Carrión; K. R. Corley; N. Cornish; A. Corsi; S. Cortese; C. A. Costa; R. Cotesta; M. W. Coughlin; S. B. Coughlin; J.-P. Coulon; S. T. Countryman; P. Couvares; P. B. Covas; E. E. Cowan; D. M. Coward; M. J. Cowart; D. C. Coyne; R. Coyne; J. D. E. Creighton; T. D. Creighton; J. Cripe; M. Croquette; S. G. Crowder; T. J. Cullen; A. Cumming; L. Cunningham; E. Cuoco; T. Dal Canton; G. Dálya; S. L. Danilishin; S. D’Antonio; K. Danzmann; A. Dasgupta; C. F. Da Silva Costa; L. E. H. Datrier; V. Dattilo; I. Dave; M. Davier; D. Davis; E. J. Daw; D. DeBra; M. Deenadayalan; J. Degallaix; M. De Laurentis; S. Deléglise; W. Del Pozzo; L. M. DeMarchi; N. Demos; T. Dent; R. De Pietri; J. Derby; R. De Rosa; C. De Rossi; R. DeSalvo; O. de Varona; S. Dhurandhar; M. C. Díaz; T. Dietrich; L. Di Fiore; M. Di Giovanni; T. Di Girolamo; A. Di Lieto; B. Ding; S. Di Pace; I. Di Palma; F. Di Renzo; A. Dmitriev; Z. Doctor; F. Donovan; K. L. Dooley; S. Doravari; I. Dorrington; T. P. Downes; M. Drago; J. C. Driggers; Z. Du; J.-G. Ducoin; P. Dupej; S. E. Dwyer; P. J. Easter; T. B. Edo; M. C. Edwards; A. Effler; P. Ehrens; J. Eichholz; S. S. Eikenberry; M. Eisenmann; R. A. Eisenstein; R. C. Essick; H. Estelles; D. Estevez; Z. B. Etienne; T. Etzel; M. Evans; T. M. Evans; V. Fafone; H. Fair; S. Fairhurst; X. Fan; S. Farinon; B. Farr; W. M. FarrORCID; E. J. Fauchon-Jones; M. Favata; M. Fays; M. Fazio; C. Fee; J. Feicht; M. M. Fejer; F. Feng; A. Fernandez-Galiana; I. Ferrante; E. C. Ferreira; T. A. Ferreira; F. Ferrini; F. Fidecaro; I. Fiori; D. Fiorucci; M. Fishbach; R. P. Fisher; J. M. Fishner; M. Fitz-Axen; R. Flaminio; M. Fletcher; E. Flynn; H. Fong; J. A. Font; P. W. F. Forsyth; J.-D. Fournier; S. Frasca; F. Frasconi; Z. Frei; A. Freise; R. Frey; V. Frey; P. Fritschel; V. V. Frolov; P. Fulda; M. Fyffe; H. A. Gabbard; B. U. Gadre; S. M. Gaebel; J. R. Gair; L. Gammaitoni; M. R. Ganija; S. G. Gaonkar; A. Garcia; C. García-Quirós; F. Garufi; B. Gateley; S. Gaudio; G. Gaur; V. Gayathri; G. Gemme; E. Genin; A. Gennai; D. George; J. George; L. Gergely; V. Germain; S. Ghonge; Abhirup Ghosh; Archisman Ghosh; S. Ghosh; B. Giacomazzo; J. A. Giaime; K. D. Giardina; A. Giazotto; K. Gill; G. Giordano; L. Glover; P. Godwin; E. Goetz; R. Goetz; B. Goncharov; G. González; J. M. Gonzalez Castro; A. Gopakumar; M. L. Gorodetsky; S. E. Gossan; M. Gosselin; R. Gouaty; A. Grado; C. Graef; M. Granata; A. Grant; S. Gras; P. Grassia; C. Gray; R. Gray; G. Greco; A. C. Green; R. Green; E. M. Gretarsson; P. Groot; H. Grote; S. Grunewald; P. Gruning; G. M. Guidi; H. K. Gulati; Y. Guo; A. Gupta; M. K. Gupta; E. K. Gustafson; R. Gustafson; L. Haegel; O. Halim; B. R. Hall; E. D. Hall; E. Z. Hamilton; G. Hammond; M. Haney; M. M. Hanke; J. Hanks; C. Hanna; O. A. Hannuksela; J. Hanson; T. Hardwick; K. Haris; J. Harms; G. M. Harry; I. W. Harry; C.-J. Haster; K. Haughian; F. J. Hayes; J. Healy; A. Heidmann; M. C. Heintze; H. Heitmann; P. Hello; G. Hemming; M. Hendry; I. S. Heng; J. Hennig; A. W. Heptonstall; Francisco Hernandez Vivanco; M. Heurs; S. Hild; T. Hinderer; D. Hoak; S. Hochheim; D. Hofman; A. M. Holgado; N. A. Holland; K. Holt; D. E. HolzORCID; P. Hopkins; C. Horst; J. Hough; E. J. Howell; C. G. Hoy; A. Hreibi; E. A. Huerta; D. Huet; B. Hughey; M. Hulko; S. Husa; S. H. Huttner; T. Huynh-Dinh; B. Idzkowski; A. Iess; C. Ingram; R. Inta; G. Intini; B. Irwin; H. N. Isa; J.-M. Isac; M. Isi; B. R. Iyer; K. Izumi; T. Jacqmin; S. J. Jadhav; K. Jani; N. N. Janthalur; P. Jaranowski; A. C. Jenkins; J. Jiang; D. S. Johnson; A. W. Jones; D. I. Jones; R. Jones; R. J. G. Jonker; L. Ju; J. Junker; C. V. Kalaghatgi; V. KalogeraORCID; B. Kamai; S. Kandhasamy; G. Kang; J. B. Kanner; S. J. Kapadia; S. Karki; K. S. Karvinen; R. Kashyap; M. Kasprzack; S. Katsanevas; E. Katsavounidis; W. Katzman; S. Kaufer; K. Kawabe; N. V. Keerthana; F. Kéfélian; D. KeitelORCID; R. Kennedy; J. S. Key; F. Y. Khalili; H. Khan; I. Khan; S. Khan; Z. Khan; E. A. Khazanov; M. Khursheed; N. Kijbunchoo; Chunglee Kim; J. C. Kim; K. Kim; W. Kim; W. S. Kim; Y.-M. Kim; C. Kimball; E. J. King; P. J. King; M. Kinley-Hanlon; R. Kirchhoff; J. S. Kissel; L. Kleybolte; J. H. Klika; S. Klimenko; T. D. Knowles; P. KochORCID; S. M. Koehlenbeck; G. Koekoek; S. Koley; V. Kondrashov; A. Kontos; N. Koper; M. Korobko; W. Z. Korth; I. Kowalska; D. B. Kozak; V. Kringel; N. Krishnendu; A. Królak; G. Kuehn; A. Kumar; P. Kumar; R. Kumar; S. Kumar; L. Kuo; A. Kutynia; S. Kwang; B. D. Lackey; K. H. Lai; T. L. Lam; M. Landry; B. B. Lane; R. N. Lang; J. Lange; B. Lantz; R. K. Lanza; A. Lartaux-Vollard; P. D. LaskyORCID; M. Laxen; A. Lazzarini; C. Lazzaro; P. Leaci; S. Leavey; Y. K. Lecoeuche; C. H. Lee; H. K. Lee; H. M. Lee; H. W. Lee; J. Lee; K. LeeORCID; J. Lehmann; A. Lenon; N. Leroy; N. Letendre; Y. Levin; J. Li; K. J. L. Li; T. G. F. Li; X. Li; F. Lin; F. Linde; S. D. Linker; T. B. Littenberg; J. Liu; X. Liu; R. K. L. Lo; N. A. Lockerbie; L. T. London; A. Longo; M. Lorenzini; V. Loriette; M. Lormand; G. Losurdo; J. D. Lough; C. O. Lousto; G. Lovelace; M. E. LowerORCID; H. Lück; D. Lumaca; A. P. Lundgren; R. Lynch; Y. Ma; R. Macas; S. Macfoy; M. MacInnis; D. M. Macleod; A. Macquet; F. Magaña-Sandoval; L. Magaña Zertuche; R. M. Magee; E. Majorana; I. Maksimovic; A. Malik; N. Man; V. Mandic; V. Mangano; G. L. Mansell; M. Manske; M. Mantovani; F. Marchesoni; F. Marion; S. Márka; Z. Márka; C. Markakis; A. S. Markosyan; A. Markowitz; E. Maros; A. Marquina; S. Marsat; F. Martelli; I. W. Martin; R. M. Martin; D. V. Martynov; K. Mason; E. Massera; A. Masserot; T. J. Massinger; M. Masso-Reid; S. Mastrogiovanni; A. Matas; F. Matichard; L. Matone; N. Mavalvala; N. Mazumder; J. J. McCann; R. McCarthy; D. E. McClelland; S. McCormick; L. McCuller; S. C. McGuire; J. McIver; D. J. McManus; T. McRae; S. T. McWilliams; D. Meacher; G. D. Meadors; M. Mehmet; A. K. Mehta; J. Meidam; A. Melatos; G. Mendell; R. A. Mercer; L. Mereni; E. L. Merilh; M. Merzougui; S. Meshkov; C. Messenger; C. Messick; R. Metzdorff; P. M. Meyers; H. Miao; C. Michel; H. Middleton; E. E. Mikhailov; L. Milano; A. L. Miller; A. Miller; M. Millhouse; J. C. Mills; M. C. Milovich-Goff; O. Minazzoli; Y. Minenkov; A. Mishkin; C. Mishra; T. Mistry; S. Mitra; V. P. Mitrofanov; G. Mitselmakher; R. Mittleman; G. Mo; D. Moffa; K. Mogushi; S. R. P. Mohapatra; M. Montani; C. J. Moore; D. Moraru; G. Moreno; S. Morisaki; B. Mours; C. M. Mow-Lowry; Arunava Mukherjee; D. Mukherjee; S. Mukherjee; N. Mukund; A. Mullavey; J. Munch; E. A. Muñiz; M. Muratore; P. G. Murray; A. Nagar; I. Nardecchia; L. Naticchioni; R. K. Nayak; J. Neilson; G. Nelemans; T. J. N. Nelson; M. Nery; A. Neunzert; K. Y. Ng; S. Ng; P. Nguyen; D. Nichols; S. Nissanke; A. Nitz; F. Nocera; C. North; L. K. Nuttall; M. Obergaulinger; J. Oberling; B. D. O’Brien; G. D. O’Dea; G. H. Ogin; J. J. Oh; S. H. Oh; F. Ohme; H. Ohta; M. A. Okada; M. Oliver; P. Oppermann; Richard J. Oram; B. O’Reilly; R. G. Ormiston; L. F. Ortega; R. O’Shaughnessy; S. Ossokine; D. J. Ottaway; H. Overmier; B. J. Owen; A. E. Pace; G. Pagano; M. A. Page; A. Pai; S. A. Pai; J. R. Palamos; O. Palashov; C. Palomba; A. Pal-Singh; Huang-Wei Pan; B. Pang; P. T. H. Pang; C. Pankow; F. Pannarale; B. C. Pant; F. Paoletti; A. Paoli; A. Parida; W. Parker; D. Pascucci; A. Pasqualetti; R. Passaquieti; D. Passuello; M. Patil; B. Patricelli; B. L. Pearlstone; C. Pedersen; M. Pedraza; R. Pedurand; A. Pele; S. Penn; C. J. Perez; A. Perreca; H. P. Pfeiffer; M. Phelps; K. S. Phukon; O. J. Piccinni; M. Pichot; F. Piergiovanni; G. Pillant; L. Pinard; M. Pirello; M. Pitkin; R. Poggiani; D. Y. T. Pong; S. Ponrathnam; P. Popolizio; E. K. Porter; J. Powell; A. K. Prajapati; J. Prasad; K. Prasai; R. Prasanna; G. Pratten; T. Prestegard; S. Privitera; G. A. Prodi; L. G. Prokhorov; O. Puncken; M. Punturo; P. Puppo; M. Pürrer; H. Qi; V. Quetschke; P. J. Quinonez; E. A. Quintero; R. Quitzow-James; F. J. Raab; H. Radkins; N. Radulescu; P. Raffai; S. Raja; C. Rajan; B. Rajbhandari; M. Rakhmanov; K. E. Ramirez; A. Ramos-Buades; Javed RanaORCID; K. Rao; P. Rapagnani; V. Raymond; M. Razzano; J. Read; T. Regimbau; L. Rei; S. Reid; D. H. Reitze; W. Ren; F. Ricci; C. J. Richardson; J. W. Richardson; P. M. Ricker; K. Riles; M. Rizzo; N. A. Robertson; R. Robie; F. Robinet; A. Rocchi; L. Rolland; J. G. Rollins; V. J. Roma; M. Romanelli; R. Romano; C. L. Romel; J. H. Romie; K. Rose; D. Rosińska; S. G. Rosofsky; M. P. Ross; S. Rowan; A. Rüdiger; P. Ruggi; G. Rutins; K. Ryan; S. Sachdev; T. Sadecki; M. Sakellariadou; L. Salconi; M. Saleem; A. Samajdar; L. Sammut; E. J. Sanchez; L. E. Sanchez; N. Sanchis-Gual; V. Sandberg; J. R. Sanders; K. A. Santiago; N. Sarin; B. Sassolas; P. R. Saulson; O. Sauter; R. L. Savage; P. Schale; M. Scheel; J. Scheuer; P. Schmidt; R. Schnabel; R. M. S. Schofield; A. Schönbeck; E. Schreiber; B. W. Schulte; B. F. Schutz; S. G. Schwalbe; J. Scott; S. M. Scott; E. Seidel; D. Sellers; A. S. Sengupta; N. Sennett; D. Sentenac; V. Sequino; A. Sergeev; Y. Setyawati; D. A. Shaddock; T. Shaffer; M. S. Shahriar; M. B. Shaner; L. Shao; P. Sharma; P. Shawhan; H. Shen; R. Shink; D. H. Shoemaker; D. M. Shoemaker; S. ShyamSundar; K. Siellez; M. Sieniawska; D. Sigg; A. D. Silva; L. P. Singer; N. Singh; A. Singhal; A. M. Sintes; S. Sitmukhambetov; V. Skliris; B. J. J. Slagmolen; T. J. Slaven-Blair; J. R. Smith; R. J. E. Smith; S. Somala; E. J. Son; B. Sorazu; F. Sorrentino; T. Souradeep; E. Sowell; A. P. Spencer; A. K. Srivastava; V. Srivastava; K. Staats; C. Stachie; M. Standke; D. A. Steer; M. Steinke; J. Steinlechner; S. Steinlechner; D. Steinmeyer; S. P. Stevenson; D. Stocks; R. Stone; D. J. Stops; K. A. Strain; G. Stratta; S. E. Strigin; A. Strunk; R. Sturani; A. L. Stuver; V. Sudhir; T. Z. Summerscales; L. Sun; S. Sunil; J. Suresh; P. J. Sutton; B. L. Swinkels; M. J. Szczepańczyk; M. Tacca; S. C. Tait; C. Talbot; D. Talukder; D. B. Tanner; M. Tápai; A. Taracchini; J. D. Tasson; R. Taylor; F. Thies; M. Thomas; P. Thomas; S. R. Thondapu; K. A. Thorne; E. Thrane; Shubhanshu TiwariORCID; Srishti Tiwari; V. Tiwari; K. Toland; M. Tonelli; Z. Tornasi; A. Torres-Forné; C. I. Torrie; D. Töyrä; F. Travasso; G. Traylor; M. C. Tringali; A. Trovato; L. Trozzo; R. Trudeau; K. W. Tsang; M. Tse; R. Tso; L. Tsukada; D. Tsuna; D. Tuyenbayev; K. Ueno; D. Ugolini; C. S. Unnikrishnan; A. L. Urban; S. A. Usman; H. Vahlbruch; G. Vajente; G. Valdes; N. van Bakel; M. van Beuzekom; J. F. J. van den Brand; C. Van Den Broeck; D. C. Vander-Hyde; J. V. van Heijningen; L. van der Schaaf; A. A. van Veggel; M. Vardaro; V. Varma; S. Vass; M. Vasúth; A. Vecchio; G. Vedovato; J. Veitch; P. J. Veitch; K. Venkateswara; G. Venugopalan; D. Verkindt; F. Vetrano; A. Viceré; A. D. Viets; D. J. Vine; J.-Y. Vinet; S. Vitale; T. Vo; H. Vocca; C. Vorvick; S. P. Vyatchanin; A. R. Wade; L. E. Wade; M. Wade; R. Walet; M. Walker; L. Wallace; S. Walsh; G. Wang; H. Wang; J. Z. Wang; W. H. Wang; Y. F. Wang; R. L. Ward; Z. A. Warden; J. Warner; M. Was; J. Watchi; B. Weaver; L.-W. Wei; M. Weinert; A. J. Weinstein; R. Weiss; F. Wellmann; L. Wen; E. K. Wessel; P. Weßels; J. W. Westhouse; K. Wette; J. T. WhelanORCID; B. F. Whiting; C. Whittle; D. M. Wilken; D. Williams; A. R. Williamson; J. L. Willis; B. Willke; M. H. Wimmer; W. Winkler; C. C. Wipf; H. Wittel; G. Woan; J. Woehler; J. K. Wofford; J. Worden; J. L. Wright; D. S. Wu; D. M. Wysocki; L. Xiao; H. Yamamoto; C. C. Yancey; L. Yang; M. J. Yap; M. Yazback; D. W. Yeeles; Hang YuORCID; Haocun Yu; S. H. R. Yuen; M. Yvert; A. K. Zadrożny; M. Zanolin; T. Zelenova; J.-P. Zendri; M. Zevin; J. Zhang; L. Zhang; T. Zhang; C. Zhao; M. Zhou; Z. Zhou; A. B. Zimmerman; X. J. Zhu; M. E. Zucker; J. Zweizig

<jats:title>Abstract</jats:title> <jats:p>Advanced LIGO’s second observing run (O2), conducted from 2016 November 30 to 2017 August 25, combined with Advanced Virgo’s first observations in 2017 August, witnessed the birth of gravitational-wave multimessenger astronomy. The first ever gravitational-wave detection from the coalescence of two neutron stars, GW170817, and its gamma-ray counterpart, GRB 170817A, led to an electromagnetic follow-up of the event at an unprecedented scale. Several teams from across the world searched for EM/neutrino counterparts to GW170817, paving the way for the discovery of optical, X-ray, and radio counterparts. In this article, we describe the online identification of gravitational-wave transients and the distribution of gravitational-wave alerts by the LIGO and Virgo collaborations during O2. We also describe the gravitational-wave observables that were sent in the alerts to enable searches for their counterparts. Finally, we give an overview of the online candidate alerts shared with observing partners during O2. Alerts were issued for 14 candidates, 6 of which have been confirmed as gravitational-wave events associated with the merger of black holes or neutron stars. Of the 14 alerts, 8 were issued less than an hour after data acquisition.</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 161

First Spectral Analysis of a Solar Plasma Eruption Using ALMA

Andrew S. RodgerORCID; Nicolas LabrosseORCID; Sven WedemeyerORCID; Mikolaj Szydlarski; Paulo J. A. SimõesORCID; Lyndsay Fletcher

<jats:title>Abstract</jats:title> <jats:p>The aim of this study is to demonstrate how the logarithmic millimeter continuum gradient observed using the Atacama Large Millimeter/submillimeter Array (ALMA) may be used to estimate optical thickness in the solar atmosphere. We discuss how using multiwavelength millimeter measurements can refine plasma analysis through knowledge of the absorption mechanisms. Here we use subband observations from the publicly available science verification (SV) data, while our methodology will also be applicable to regular ALMA data. The spectral resolving capacity of ALMA SV data is tested using the enhancement coincident with an X-ray bright point and from a plasmoid ejection event near active region NOAA12470 observed in Band 3 (84–116 GHz) on 2015 December 17. We compute the interferometric brightness temperature light curve for both features at each of the four constituent subbands to find the logarithmic millimeter spectrum. We compared the observed logarithmic spectral gradient with the derived relationship with optical thickness for an isothermal plasma to estimate the structures’ optical thicknesses. We conclude, within 90% confidence, that the stationary enhancement has an optical thickness between 0.02 ≤ <jats:italic>τ</jats:italic> ≤ 2.78, and that the moving enhancement has 0.11 ≤ <jats:italic>τ</jats:italic> ≤ 2.78, thus both lie near to the transition between optically thin and thick plasma at 100 GHz. From these estimates, isothermal plasmas with typical Band 3 background brightness temperatures would be expected to have electron temperatures of ∼7370–15300 K for the stationary enhancement and between ∼7440 and 9560 K for the moving enhancement, thus demonstrating the benefit of subband ALMA spectral analysis.</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 163

Unsupervised Generation of High Dynamic Range Solar Images: A Novel Algorithm for Self-calibration of Interferometry Data

Surajit MondalORCID; Atul MohanORCID; Divya OberoiORCID; John S. MorganORCID; Leonid BenkevitchORCID; Colin J. LonsdaleORCID; Meagan Crowley; Iver H. CairnsORCID

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 97

Evidence for Super-Alfvénic Oscillations in Solar Type III Radio Burst Sources

Atul MohanORCID; Surajit MondalORCID; Divya OberoiORCID; Colin J. Lonsdale

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 98