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Nature

Resumen/Descripción – provisto por la editorial en inglés

Nature is a weekly international journal publishing the finest peer-reviewed research in all fields of science and technology on the basis of its originality, importance, interdisciplinary interest, timeliness, accessibility, elegance and surprising conclusions. Nature also provides rapid, authoritative, insightful and arresting news and interpretation of topical and coming trends affecting science, scientists and the wider public.

Palabras clave – provistas por la editorial

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No detectada	desde jul. 2012 / hasta dic. 2023	Nature.com
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Información

Tipo de recurso:

revistas

ISSN impreso

0028-0836

ISSN electrónico

1476-4687

Editor responsable

Springer Nature

País de edición

Reino Unido

Fecha de publicación

1869-

Cobertura temática

Ciencias naturales

Ingeniería y tecnología

Ciencias médicas y de la salud

Ciencias agrícolas y veterinarias

Tabla de contenidos

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doi: 10.1038/d41586-021-02076-7

Insights into a receptor that lets insects sense scents

Emily R. Liman

Palabras clave: Multidisciplinary.

Pp. 37-39

doi: 10.1038/d41586-021-02324-w

From the archive

Palabras clave: Multidisciplinary.

Pp. 39-39

doi: 10.1038/d41586-021-02122-4

A brain signal that coordinates thought with metabolism

Manfred Hallschmid; Jan Born

Palabras clave: Multidisciplinary.

Pp. 39-40

doi: 10.1038/s41586-021-03751-5

Measuring the density structure of an accretion hot spot

C. C. Espaillat; C. E. Robinson; M. M. Romanova; T. Thanathibodee; J. Wendeborn; N. Calvet; M. Reynolds; J. Muzerolle

<jats:title>Abstract</jats:title><jats:p>Magnetospheric accretion models predict that matter from protoplanetary disks accretes onto stars via funnel flows, which follow stellar magnetic field lines and shock on the stellar surfaces<jats:sup>1â€“3</jats:sup>, leaving hot spots with density gradients<jats:sup>4â€“6</jats:sup>. Previous work has provided observational evidence of varying density in hot spots<jats:sup>7</jats:sup>, but these observations were not sensitive to the radial density distribution. Attempts have been made to measure this distribution using X-ray observations<jats:sup>8â€“10</jats:sup>; however, X-ray emission traces only a fraction of the hot spot<jats:sup>11,12</jats:sup> and also coronal emission<jats:sup>13,14</jats:sup>. Here we report periodic ultraviolet and optical light curves of the accreting star GMÂ Aurigae, which have a time lag of about one day between their peaks. The periodicity arises because the source of the ultraviolet and optical emission moves into and out of view as it rotates along with the star. The time lag indicates a difference in the spatial distribution of ultraviolet and optical brightness over the stellar surface. Within the framework of a magnetospheric accretion model, this finding indicates the presence of a radial density gradient in a hot spot on the stellar surface, because regions of the hot spot with different densities have different temperatures and therefore emit radiation at different wavelengths.</jats:p>

Palabras clave: Multidisciplinary.

Pp. 41-44